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Best Micro SD Card...?

Hi guys,
So I recently got an Acer a500 and was wondering what the best MicroSD card I can get for it is. I was thinking about a Sandisk class 4 32Gb SD Card. Is that good? I'm looking for a card that will be fast for supporting apps to SD Card. I also heard Sandisk is the best SD cards for Android. Would a class 10, 16Gb be better? I seen one but not Sandisk. Thanks for the help.

Papaniz said:
Hi guys,
So I recently got an Acer a500 and was wondering what the best MicroSD card I can get for it is. I was thinking about a Sandisk class 4 32Gb SD Card. Is that good? I'm looking for a card that will be fast for supporting apps to SD Card. I also heard Sandisk is the best SD cards for Android. Would a class 10, 16Gb be better? I seen one but not Sandisk. Thanks for the help.
Click to expand...
Click to collapse
There is no such thing as "best" as there are several dozen manufacturers selling cards, and still almost all the flash chips on them come from the same factories. If you want speed then obviously class 10 is better than class 4. Just make sure you don't buy one from eBay or such as those places sell fakes for suckers who do not know how to check if they are fakes or not.

My adata one I got off new egg a class 4 32GB had been good performs at class four speed and can load to full cap. Without error
Sent from my Nexus S 4G using Tapatalk

I'm thinking of getting a 16Gb, Class 10 flash card Kingston. Don't know if links are allowed otherwise would've linked it. It's $43.

SanDisk Mobile Ultra Class 6 32GB
I'm going for the SanDisk Mobile Ultra 32GB it's a Class 6 30MB/s depending where you are checking you can find it from 43 euros (amazon.de) to 100e, I think it's the fastest, I use SanDisks in all my devices, DSLR, mobile etc, most reliable so far. Not sure why Samsung for example calls its card a Class 10 if it's 24MB/s

Class is the write speed, like class 10 is 10 MB/s. The class bits can't go higher than 10, so it's a limitation of the SDHC specs. The read speed can vary though, so a 30MB/s read means it could probably write that fast, but it can't report over 10. It's set to whatever the mfg thinks is reliable for write speeds.
New interfaces are using UHS (50 MB/s r/w), DDR UHS (95 MB/s) while still calling it class 10 for older compatibility. Then there's UHS-2 which is 4x that.

Sorry to hijackthe thread, but we can go up to 64GB on the iconias, right?

Nope. 32GB is the limit for SDHC. SDXC goes to 2TB, but the Iconia is only compatible with SDHC.

my Asus transformer prime takes sdxc just waiting for some larger spec and cheaper ones to come out currently limited to 128 gb
Sent from my Transformer Prime TF201 using xda premium

CuriousTech said:
Class is the write speed, like class 10 is 10 MB/s. The class bits can't go higher than 10, so it's a limitation of the SDHC specs. The read speed can vary though, so a 30MB/s read means it could probably write that fast, but it can't report over 10. It's set to whatever the mfg thinks is reliable for write speeds.
New interfaces are using UHS (50 MB/s r/w), DDR UHS (95 MB/s) while still calling it class 10 for older compatibility. Then there's UHS-2 which is 4x that.
Click to expand...
Click to collapse
Oh yeah! My mistake.
Update: It is actually a UHS-I class, just read the description more carefully!

I'm using the Sandisk 64GB SDXC in my A501 and it works fine. I only had to format it in the PC to NTFS.
Sent from my A501 using xda premium

Interesting! What does it show for total space after NTFS format? If it's SDXC compatible, it should be able to handle anything up to 2TB.

It says total memory ("Gesamtspeicher" in German) is 59.46 GB.
I have copied many movies on the card (now only about 14GB empty space is available) and all files can be accessed fine.
It would really be nice to know if this means that we even could use cards above 64GB once these will be available...
Sent from my A501 using xda premium

Murpsel said:
It would really be nice to know if this means that we even could use cards above 64GB once these will be available...
Click to expand...
Click to collapse
SDHC-standard supports only up to 32GB cards, SDXC-standard supports much more than than but A500 does not support SDXC. So no.

Murpsel said:
It says total memory ("Gesamtspeicher" in German) is 59.46 GB.
I have copied many movies on the card (now only about 14GB empty space is available) and all files can be accessed fine.
It would really be nice to know if this means that we even could use cards above 64GB once these will be available...
Sent from my A501 using xda premium
Click to expand...
Click to collapse
There's no reason that it should have any trouble if it can handle 64GB as SDXC and NTFS have an addressable range of 32 bits x 512 (2TB). It's similar to switching from a 16-bit CPU to a 32-bit CPU. There's no 17-bit CPU.
It's hard to believe this has an SDXC interface though, but then the difference isn't as much hardware related as SD to SDHC.

I know that the A500/A501 should not be able to handle SDXC cards.
But at least my A501 does it very well with the Sandisk 64GB card. For everybody with doubts I have attached some proof.
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Sent from my A501 using xda premium

I know that the A500/A501 should not be able to handle SDXC cards.
But at least my A501 does it very well with the Sandisk 64GB card. For everybody with doubts I have attached some proof.
View attachment 879470
View attachment 879471
Sent from my A501 using xda premium

i to have put a 64 gb card in my tablet. It does work . I Have the card formatted NTFS. In 3 partitions.. i actually bought it to use in a windows tablet that i no longer own.
In my iconia i now keep a class 10 16 gb card that is PNY BRAND....I see No reason for anything larger.. With what i use my tablet for no reason to be bigger. the 64 gb card was over 100.00. but got on amazon with a gift card from another site...I also have a 1.8 micro drive. that is 128 gb .. that works awesome thru usb port.. I forget the brand as its in a generic case. i think its a Toshiba drive..Not looking while writing this as its in my purse downstairs...
every chic should have a hard drive in her purse right.. Giggles..

erica_renee said:
every chic should have a hard drive in her purse right.. Giggles..
Click to expand...
Click to collapse
I actually have a very neat portable hard drive in my phone: it has 32GB internal storage plus it also can be expanded with an SDHC card. And the phone can act as a regular USB drive, so it can be plugged to A500 or whatever. Terribly handy.

Yeah, I don't think I'd buy one right now at $3 per GB or even $100, but that's great news for the future when 32 is considered too small to be useful

SD Cards Half Life 2

Since only having 16gb the need for an SD card is high, been using a 64gb Sandisk Ultra which I thought was a good card.
Since trying to play Half Life 2 from the SD it takes ages to load and stutters not a massive deal but annoying none the less.
Did a full test of the nand memory with reboot and that came back at 89 read and 36 write.
The Sandisk came back with 35 read & 7 write.
Gone for a 32gb 633 Lexar card. Roughly 90mb/s read 40mb/s write.* Paid £21 inc cash back.
The only other card I could find faster was the Sandisk Extreme PRO which is only available in 16gb flavour and clocks in at an impressive 90 read and 90 write. Expensive though. £26 for 16gb
The Sandisk Extreme Plus looks good as well with 80read & 50 write, bit more expensive than the Lexar. £30 for 32gb
Should be here in a couple of days, I'll do a few tests and report back.
Sent from my SHIELD Tablet using Tapatalk

Great! I look forward to those results.
I've noticed stuttering in HL2 when installed on the internal memory as well - one point got as bad as having 5 second bouts with the sound repeating on a single frame. When you chuck explosive barrels, everything often stops right before impact. I wonder what, if anything, can be done to help this. Luckily, spots this bad are rare.
Sent from my iPhone using Tapatalk

Am I mistaken that the usb 3.0 adapter it comes with is what gives it the huge speeds? Pretty sure it will still bounce around 30-50MB/s in an actual sd slot.
Here are speeds benched on a Galaxy S5
A1 SD Bench Results
Quick -
R: 30.23 MB/s
W: 25.45 MB/s
Long -
R: 33.78 MB/s
W: 23.84 MB/s
Random -
R: 8.22 MB/s
W: 1.0 MB/s
Accurate -
R: 33.96 MB/s
W: 25.46 MB/s
Not slow but not 80MB/s+ either.

Riku98523 said:
Am I mistaken that the usb 3.0 adapter it comes with is what gives it the huge speeds? Pretty sure it will still bounce around 30-50MB/s in an actual sd slot.
Here are speeds benched on a Galaxy S5
A1 SD Bench Results
Quick -
R: 30.23 MB/s
W: 25.45 MB/s
Long -
R: 33.78 MB/s
W: 23.84 MB/s
Random -
R: 8.22 MB/s
W: 1.0 MB/s
Accurate -
R: 33.96 MB/s
W: 25.46 MB/s
Not slow but not 80MB/s+ either.
Click to expand...
Click to collapse
Hmm strange my old ultra Sandisk gets better reads than those results but the writes seem good.
I doubt one would see 80+ reads in a device but should be better than the ultra, one would expect, a bit of testing will be done.
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Dumb question, but do you have the tablet not set to optimized?
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Why would it be a dumb question, yes set to optimise!
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funb0b said:
Why would it be a dumb question, yes set to optimise!
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Click to collapse
Would being on optimized be one of the issues with slow game loading? I'd be interested to see if someone could measure the read/ write speed while playing from the internal memory. I'm torn between the 128GB Sandisk Ultra 48MB/s read and the 64GB Sandisk Extreme Plus 80 MB/s.

funb0b said:
Why would it be a dumb question, yes set to optimise!
Sent from my SHIELD Tablet using Tapatalk
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Click to collapse
I imagine that the game would perform better when your tablet is set to max performance and also plugged in. On optimized without receiving any extra power it might have occasional stuttering but still be relatively playable. I've noticed a general smoothness while playing on my couch in console mode that I didn't always have otherwise but it was still common.

OK got the new Lexar card today.
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It's made a massive difference?
Half Life loads as quick as nand and the stuttering has gone Yay. (Maybe the tiniest micro pauses but almost imperceptible)
Using foldermount for all the stubborn apps like Trine, Gta etc. I still have 9+GB of nand free.
Sent from my SHIELD Tablet using Tapatalk

funb0b said:
OK got the new Lexar card today.
It's made a massive difference��
Half Life loads as quick as nand and the stuttering has gone Yay. (Maybe the tiniest micro pauses but almost imperceptible)
Using foldermount for all the stubborn apps like Trine, Gta etc. I still have 9+GB of nand free.
Sent from my SHIELD Tablet using Tapatalk
Click to expand...
Click to collapse
those are some good speeds! I'm surprised. might have to order one of those. tho not so sure on the brand.. never really heard of them lol
Edit: - I wonder what the performance is like on the 64gb Lexar micro sd card, I just ordered one, as I can return it back to amazon if the performance isn't any good,
are you able to do an Accurate test in that benchmark program? see what your results are like..

funb0b said:
OK got the new Lexar card today.
It's made a massive difference?
Half Life loads as quick as nand and the stuttering has gone Yay. (Maybe the tiniest micro pauses but almost imperceptible)
Using foldermount for all the stubborn apps like Trine, Gta etc. I still have 9+GB of nand free.
Sent from my SHIELD Tablet using Tapatalk
Click to expand...
Click to collapse
I wanna test my Samsung class 10 card. Which testvapp did you use?
Sent from my SM-N900T using Tapatalk

aznmode said:
I wanna test my Samsung class 10 card. Which testvapp did you use?
Sent from my SM-N900T using Tapatalk
Click to expand...
Click to collapse
https://play.google.com/store/apps/details?id=com.a1dev.sdbench&hl=en_GB
also I use https://play.google.com/store/apps/details?id=com.grilledmonkeydonate.lagfix&hl=en_GB to keep the internal memory fast. (needs root)
Sandisk extreme plus 64gb
Samsung Pro 64gb
I should be getting the Lexar 633 64gb, on Friday, and ill put some more benchmarks up to compare.

Lexar has been in the flash memory game as long as I can remember (and that includes when CF was common and SmartMedia was the main contender). I've have multiple lexar cards and never had any issues. I suppose they're not as well known as sandisk but they are darn good.

Did a more complex text on the lexar which came back at 73/24ish.
The performance with HL2 is pretty stellar.
Sent from my SM-N9005 using Tapatalk

funb0b said:
Did a more complex text on the lexar which came back at 73/24ish.
The performance with HL2 is pretty stellar.
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
Nice so I guess Lexar is the way to go.
Do they make a 128GB micro SD card? Not sure which one to get.
Or can you recommend a 128GB micro SD card that would perform just as good ?

MOFO-Bro said:
Nice so I guess Lexar is the way to go.
Do they make a 128GB micro SD card? Not sure which one to get.
Or can you recommend a 128GB micro SD card that would perform just as good ?
Click to expand...
Click to collapse
The choice in 128 cards is fairly small AFAIK 1 the Sandisk with pretty so so performance with only a max of 30mb/s reads and the Plus 40mb/s reads, which would I think struggle with demanding games like HL2.
I would say that if you had the 32gb Shield and kept demanding stuff on the that it would be less of an issue and the 128 would be fine for normal less demanding tasks.
32/64Gb cards are the performance cards at the moment, something like the:
Sandisk Extreme PLUS 80/50(not to be confused with just the regular extreme 45/30) or the Lexar 633 are considerably faster cards.
Be careful when buying as there are a heck of a lot of copies that don't perform, don't be tempted to buy from an unreputable place based on cost.
I personally have the 32gb Lexar 633 which I found perfect for my needs and fairly cost effective at £21 after cashback :victory:
Nd. I was using a 64gb Sandisk Ultra which was toilet.

funb0b said:
The choice in 128 cards is fairly small AFAIK 1 the Sandisk with pretty so so performance with only a max of 30mb/s reads and the Plus 40mb/s reads, which would I think struggle with demanding games like HL2.
I would say that if you had the 32gb Shield and kept demanding stuff on the that it would be less of an issue and the 128 would be fine for normal less demanding tasks.
32/64Gb cards are the performance cards at the moment, something like the:
Sandisk Extreme PLUS 80/50(not to be confused with just the regular extreme 45/30) or the Lexar 633 are considerably faster cards.
Be careful when buying as there are a heck of a lot of copies that don't perform, don't be tempted to buy from an unreputable place based on cost.
I personally have the 32gb Lexar 633 which I found perfect for my needs and fairly cost effective at £21 after cashback :victory:
Nd. I was using a 64gb Sandisk Ultra which was toilet.
Click to expand...
Click to collapse
Thanks, really wanted a 128GB but maybe just getting a 64GB will do.
Anyone else know of a good 128GB micro SD card?

Has anyone had any experience with the Samsung evo?
Sent from my GT-I9505G using XDA Free mobile app

MOFO-Bro said:
Thanks, really wanted a 128GB but maybe just getting a 64GB will do.
Anyone else know of a good 128GB micro SD card?
Click to expand...
Click to collapse
im only aware of the SanDisk models. iv used 3 of them, one died on me, and the other 2, running fine.

aamir123 said:
Has anyone had any experience with the Samsung evo?
Sent from my GT-I9505G using XDA Free mobile app
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Click to collapse
The Pro looks like a good bet.
Sent from my SHIELD Tablet using Tapatalk

what is wrong with the 16GB model vs. 32 or 64GB?

Can I assume that 16GB Moto X [Pure | Style] is otherwise identical to the 32GB & 64GB models (apart from internal storage size)?
I'm looking for any reason it's not a good idea to buy the cheaper 16GB model and a big/fast microSD card. Anyone?
It seems to me as if 16GB should be enough internal storage given the availability of cheap and fast high-capacity microSD cards for this phone. Am I wrong?

Internal is always better or faster. I would personally go for the 32gb model if possible. I have a 16gb X Play and although it now has adaptive storage option with MM it is not ideal.

My thinking is the same as OP. 16Gb model with a fast 128Gb sdcard. I have only a 32Gb card now but it does the job for now.

No SD card is going to compare to the internal NAND storage. Those 16GB phones will probably come with about 11GB space for you to use too.
32GB minimum should be the lowest standard of 2016.

I went with the 16 because of the SD card option. Bought a good 64GB card for $20. Before MM I was constantly having to move apps to the external card (those that let me).
Installed MM as soon as the soak leaked - chose unified storage immediately.
Not sure if I notice any speed difference - I'm on my phone 16 hours a day, use a ton of apps, and it's a huge improvement in speed and battery over my previous one (HTC One M7 vzw). If I could do it over again, I might have chosen the larger 32GB, only because of benchmarks that show internal is much faster than external SD; but in real world usage, I can't tell the difference.

lermajm9 said:
I went with the 16 because of the SD card option. Bought a good 64GB card for $20. Before MM I was constantly having to move apps to the external card (those that let me).
Installed MM as soon as the soak leaked - chose unified storage immediately.
Not sure if I notice any speed difference - I'm on my phone 16 hours a day, use a ton of apps, and it's a huge improvement in speed and battery over my previous one (HTC One M7 vzw). If I could do it over again, I might have chosen the larger 32GB, only because of benchmarks that show internal is much faster than external SD; but in real world usage, I can't tell the difference.
Click to expand...
Click to collapse
Thanks. I also have the m7vzw, and suspect my next phone will be the 32gb moto x pure...
Where did you see benchmarks on this phone's internal nand vs. the fastest microSD card you can put in it?
Sent from my One using Tapatalk

bmeek said:
Thanks. I also have the m7vzw, and suspect my next phone will be the 32gb moto x pure...
Where did you see benchmarks on this phone's internal nand vs. the fastest microSD card you can put in it?
Sent from my One using Tapatalk
Click to expand...
Click to collapse
I don't have any screen shots to show but from my own benchmarking, internal memory is on average 10x to 12x faster than even good performance microSD cards. I've got a Samsung 64gb class 10/u1 card and my internal 64gb beats it by many fold. Add in app overhead and depending on how you use your phone, the adaptive storage can make the phone feel quite a bit slow with app installs, updates and just launching in general. Just because of mounting and some apps installed to SD even start up slows just having an SD in the phone. Lol
Sent from my XT1575 using Tapatalk

bmeek said:
Can I assume that 16GB Moto X [Pure | Style] is otherwise identical to the 32GB & 64GB models (apart from internal storage size)?
I'm looking for any reason it's not a good idea to buy the cheaper 16GB model and a big/fast microSD card. Anyone?
It seems to me as if 16GB should be enough internal storage given the availability of cheap and fast high-capacity microSD cards for this phone. Am I wrong?
Click to expand...
Click to collapse
Games and video recording will need lots of fast internal storage. Other than that, you're probably fine dumping everything on an SD card.

microSD card specs?
jetman36 said:
I don't have any screen shots to show but from my own benchmarking, internal memory is on average 10x to 12x faster than even good performance microSD cards. I've got a Samsung 64gb class 10/u1 card and my internal 64gb beats it by many fold. Add in app overhead and depending on how you use your phone, the adaptive storage can make the phone feel quite a bit slow with app installs, updates and just launching in general. Just because of mounting and some apps installed to SD even start up slows just having an SD in the phone. Lol
Sent from my XT1575 using Tapatalk
Click to expand...
Click to collapse
Your description of your microSD card suggests you could do better. See: https://forums.motorola.com/posts/8cda627ead . Apparently the Moto X Pure will take advantage of a "UHS-1 (U3)" card.
I'm still curious to see benchmarks of the fast microSD option vs. the internal NAND storage (pointers welcome).
While I suspect that I could get by fine with a 16GB phone by pointing image/video capture and TWRP backups on a fast sd card, I'm convinced I should pay for a 32GB model and not worry about feeling cramped for fast storage.
I also suspect I would prefer using the SD card as portable (or at least not be forced to depend on Marshmallow's internal storage option).

bmeek said:
Your description of your microSD card suggests you could do better. See: https://forums.motorola.com/posts/8cda627ead . Apparently the Moto X Pure will take advantage of a "UHS-1 (U3)" card.
I'm still curious to see benchmarks of the fast microSD option vs. the internal NAND storage (pointers welcome).
While I suspect that I could get by fine with a 16GB phone by pointing image/video capture and TWRP backups on a fast sd card, I'm convinced I should pay for a 32GB model and not worry about feeling cramped for fast storage.
I also suspect I would prefer using the SD card as portable (or at least not be forced to depend on Marshmallow's internal storage option).
Click to expand...
Click to collapse
So my memory of performance was from my older Sony and the 32gb card I had in it. Just ran the numbers using the A1 SD bench app and this is what I came up with.
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Also this is the microSD card that I currently have in my phone right now.
https://www.amazon.com/gp/aw/d/B00IVPU7AO/ref=ya_aw_od_pi?ie=UTF8&psc=1
Sent from my XT1575 using Tapatalk

thanks for the internal storage benchmark...
jetman36 said:
So my memory of performance was from my older Sony and the 32gb card I had in it. Just ran the numbers using the A1 SD bench app and this is what I came up with.
Also this is the microSD card that I currently have in my phone right now.
https://www.amazon.com/gp/aw/d/B00IVPU7AO/ref=ya_aw_od_pi?ie=UTF8&psc=1
Sent from my XT1575 using Tapatalk
Click to expand...
Click to collapse
Thanks for that benchmark screenshot. The internal storage numbers confirm @MattBooth's assertion that it's faster. I wonder what a UH1-U3 card like http://amzn.com/B013CP5IWO would show on this test/phone...
The last time I messed with benchmarking SD cards, I had two identical cards (same vendor/model bought at the same time) one was consistently-faster than the other. IOW, it may be a bit of a crap-shoot trying to get a truly fast card.

bmeek said:
Thanks for that benchmark screenshot. The internal storage numbers confirm @MattBooth's assertion that it's faster. I wonder what a UH1-U3 card like http://amzn.com/B013CP5IWO would show on this test/phone...
The last time I messed with benchmarking SD cards, I had two identical cards (same vendor/model bought at the same time) one was consistently-faster than the other. IOW, it may be a bit of a crap-shoot trying to get a truly fast card.
Click to expand...
Click to collapse
from my admittedly limited knowledge of memory fabrication, I believe that companies test a few random chips from a batch and determine the bin(rating) from those tests. so you could have two chips from the same bin but you can still have one chip that performs higher than normal from the rest of the bin. if I'm wrong someone please correct me.
Sent from my SHIELD Tablet using Tapatalk

[Marshmallow] Huge performance hit when formatting Sdcard as Internal

It's a 8GB/1GB version.
The pictures speak for themselves. The Sdcard is PNY Turbo Perf 32GB. The left picture was taken when the PNY was formatted as internal. The internal card performance result in the 1st picture seems misleading, it's actually my sdcard, not the real internal flash memory of the phone.
I believe the sdcard encryption (don't be confused with device encryption) in Android 6.0 deliberately takes away ~50% both read and write performance of my reasonably fast Sd Card.
I am thinking about going back to 5.1.1 where I can move my apps to external storage without any performance compromise.
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I put a Samsung Evo 45mbps card in my fathers third gen G and it took a long time to format as internal memory. I also received a message when it was done saying the memory card may be too slow to act as internal memory.
Would love to find a list of cards that don't give that message.

Raistlin1 said:
I put a Samsung Evo 45mbps card in my fathers third gen G and it took a long time to format as internal memory. I also received a message when it was done saying the memory card may be too slow to act as internal memory.
Would love to find a list of cards that don't give that message.
Click to expand...
Click to collapse
I got the same message with the same card.

Raistlin1 said:
I put a Samsung Evo 45mbps card in my fathers third gen G and it took a long time to format as internal memory. I also received a message when it was done saying the memory card may be too slow to act as internal memory.
Would love to find a list of cards that don't give that message.
Click to expand...
Click to collapse
I've put Sandisk cards in 3 G3 phones and they all work exceptionally well. There is a reason that many phone and tablet manufacturers use Sandisk as their internal memory cards.

Tel864 said:
I've put Sandisk cards in 3 G3 phones and they all work exceptionally well. There is a reason that many phone and tablet manufacturers use Sandisk as their internal memory cards.
Click to expand...
Click to collapse
Thanks for this info. Since I'm planning on doing this myself I guess it'd be best to go with a Sandisk. I didn't think the brand would matter since the sd card and internal phone memory are different types of chips, but there you go.

Sphynxie said:
Thanks for this info. Since I'm planning on doing this myself I guess it'd be best to go with a Sandisk. I didn't think the brand would matter since the sd card and internal phone memory are different types of chips, but there you go.
Click to expand...
Click to collapse
Buy it from a reputable source if you buy it online, it's also the most counterfeited card. Do a search and you'll find that they even make the packages to resemble a Sandisk package. I purchased a counterfeit card from Amazon once, but they made good on it.

i have 31 MB/s read and 36 MB/s write on internal memory with a SanDisk Extreme PRO 32GB U3

I was really surprised when I got the slow SD card message with a brand new Sandisk Extreme card formatted as internal memory.

I thought pretty much everyone got the slow SD card message, especially since other Marshmallow devices with SD card support had reported that quite a bit as well, and it was just a bogus warning message...

On the 3 G3's I have using Sandisk cards, I've never seen that message. I didn't know that message existed until this thread.
Sent from my SM-T530NU using Tapatalk

Tel864 said:
On the 3 G3's I have using Sandisk cards, I've never seen that message. I didn't know that message existed until this thread.
Sent from my SM-T530NU using Tapatalk
Click to expand...
Click to collapse
To be clear, we are talking about using Marshmallows "adaptive storage" feature, in particular selecting "internal storage", that is resulting in the slow sd card message. Are you using this same exact feature as well?

pjc123 said:
To be clear, we are talking about using Marshmallows "adaptive storage" feature, in particular selecting "internal storage", that is resulting in the slow sd card message. Are you using this same exact feature as well?
Click to expand...
Click to collapse
I think this might be a problem related to the microsd card interface that Motorola uses on it's low to mid-range phones rather than anything to do with the microsd cards themselves. All of the SOCs that they use (Snapdragon 200, 400, 410) support SD 3.0 (UHS-I) speeds, but I read somewhere that Motorola cheaped out to save costs and used a slower physical interface that severely limits read and write speeds. I can't find a link at the moment; I thought it was on Anandtech, but I'll update the post if I find it. I get this same message on Condor and Surnia.

yeah
performance of SD card is affected
Moto G 3rd Gen Stock w/ Sandisk Extreme Pro UHS-1 U3 = 34.25MBps Read & 49.49MBps Write
Moto E 1st Gen CM13 w/ Samsung Evo UHS-1 U1 = 15.72MBps Read & 9.23MBps Write

Tel864 said:
On the 3 G3's I have using Sandisk cards, I've never seen that message. I didn't know that message existed until this thread.
Sent from my SM-T530NU using Tapatalk
Click to expand...
Click to collapse
Oh it exists... Trust me... I have seen it mentioned so many times I just thought it was a generic warning everyone got. I didn't know different until I read this thread. [emoji3]
Sent from my MotoG3 using Tapatalk

Even set up as Portable storage (So no encrytption) the SD card (Well my SD Card Anyway - Sandisk Extreme 32GB) is already 1/2 the speed of the phones internal memory. I wonder if encryption knocks it down another 1/2 - that would suck:

pjc123 said:
Even set up as Portable storage (So no encrytption) the SD card (Well my SD Card Anyway - Sandisk Extreme 32GB) is already 1/2 the speed of the phones internal memory. I wonder if encryption knocks it down another 1/2 - that would suck:
Click to expand...
Click to collapse
You guys do realise there are different classes of SD cards right? There's generally a little number in a circle on the card, most commonly a 4 which is relatively low performance in comparison to speed class 10. Then you have the UHS variants of speed class 1 and 3 which are ultra high speed and the number is inside a little U on the card.

SanDisk Extreme should be a UHS 3 card.
EDIT: Results with a SanDisk Ultra Class 10 Card (5.1.1 16/2 GB)
i.imgur.com/ist77iw.png
10 stands for min 10 MB/s
UHS 3 is min 30 MB/s so your card is almost meeting that.
Then there is also UHS-I and UHS-II which might be not supported (specially UHS-II which requires extra pins).
EDIT2: The SanDisk Extreme card should also be a UHS-I card so it seems that the Moto G3 doesn't support UHS-I or/and UHS-II.

I biyed sandisk extreme 32gb sd card for marshmallow update,only 20 euro in germany,class u3,and working perfectly by me.With my old card class 10 phone lags alot.

Fast SDCards for Galaxy S8/S8+

Still confuse which SDCard to go for for my s8+, little searching on Google shows me that Sandisk Extreme 128GB U3 MicroSD Card is the fastest, any suggestions?

As far as I can tell (since we have to guess due to samsung failing to provide proper details as usual), it doesnt support UHS-II or UHS-III (275mb speeds). So you may as well get a standard UHS-I card that does around 90mb. Saw a guy test a 275mb UHS-II card and it only got 60-70mb speeds in A1 SD bench, the same as my 90mb UHS-I card does. I have yet to see anyone do any better than about 80-90mb speeds.

Considering UHS-III came out only recently it makes sense the phone doesn't support that.
I went out and bought a UHS-II card though and I'm only getting UHS-I speeds, so I can confirm that the bus in the phone is ONLY UHS-I.

What are decent UHS-I speeds? I'm getting just 40mb/sec on read and 20mb/sec on write

LinS123 said:
Considering UHS-III came out only recently it makes sense the phone doesn't support that.
I went out and bought a UHS-II card though and I'm only getting UHS-I speeds, so I can confirm that the bus in the phone is ONLY UHS-I.
Click to expand...
Click to collapse
UHS-III was releasedin Feb yes.....UHS-II was release as part of SD spec 4.0, and considering 4.10 came out back in 2013 I see no excuse for not supporting that at least, it allows speeds up to 312mb full or 156mb half duplex, MUCH higher than anything a UHS-I card will ever do.

ewokuk said:
UHS-III was releasedin Feb yes.....UHS-II was release as part of SD spec 4.0, and considering 4.10 came out back in 2013 I see no excuse for not supporting that at least, it allows speeds up to 312mb full or 156mb half duplex, MUCH higher than anything a UHS-I card will ever do.
Click to expand...
Click to collapse
I agree with you there. I really wish it was a UHS-II bus at the least.

itsmohsink said:
Still confuse which SDCard to go for for my s8+, little searching on Google shows me that Sandisk Extreme 128GB U3 MicroSD Card is the fastest, any suggestions?
Click to expand...
Click to collapse
Not even close.
This is the fastest and what Im using...nothing else i know of can touch it.
https://www.bhphotovideo.com/c/prod...800r_128gb_professional_uhs_ii_microsdxc.html
Sent from my Note 7, S7 Edge or S6

force70 said:
Not even close.
This is the fastest and what Im using...nothing else i know of can touch it.
https://www.bhphotovideo.com/c/prod...800r_128gb_professional_uhs_ii_microsdxc.html
Sent from my Note 7, S7 Edge or S6
Click to expand...
Click to collapse
If it's giving you the speed which is mentioned in the specs then it means S8 supports U3!

itsmohsink said:
If it's giving you the speed which is mentioned in the specs then it means S8 supports U3!
Click to expand...
Click to collapse
I didn't check in ny S8...crap.
My note 7 was close to as advertised though 240ish read and around 90 write if memort serves me. When i get my new S8 ill check.
But besides the speed tests i have 55gv of pictures on that card and when i browse my gallery they all load immediately when i scroll. No other card ive ever used would do that Id see lots of white black squares lol

force70 said:
I didn't check in ny S8...crap.
My note 7 was close to as advertised though 240ish read and around 90 write if memort serves me. When i get my new S8 ill check.
But besides the speed tests i have 55gv of pictures on that card and when i browse my gallery they all load immediately when i scroll. No other card ive ever used would do that Id see lots of white black squares lol
Click to expand...
Click to collapse
That would mean the note 7 supported UHS-II. UHS-I maximum bus speed is 104mb regardless of read or write, the same speed the S8 supports, and that means something like a theoretical maximum 95mb or so which is why you won't find a UHS-I card quoting a higher speed than that. I don't know if the note 7 had UHS-II or not (I don't think it does and I can't find any info on it either way), it's possible given it's larger size I suppose but if the note 7 was only UHS-I then there is no way it could do anything remotely close to 240.

Speeds
How are you guys testing the speeds on the cards? I have the one that Samsung sent me with my Gear VR and all that... Just wondering, I really don't think I use it enough for anything anyhow.

ewokuk said:
That would mean the note 7 supported UHS-II. UHS-I maximum bus speed is 104mb regardless of read or write, the same speed the S8 supports, and that means something like a theoretical maximum 95mb or so which is why you won't find a UHS-I card quoting a higher speed than that. I don't know if the note 7 had UHS-II or not (I don't think it does and I can't find any info on it either way), it's possible given it's larger size I suppose but if the note 7 was only UHS-I then there is no way it could do anything remotely close to 240.
Click to expand...
Click to collapse
Its been awhile i cant remember exactly but it was damn fast..i know i saw over 200 read speeds though

force70 said:
Its been awhile i cant remember exactly but it was damn fast..i know i saw over 200 read speeds though
Click to expand...
Click to collapse
I'm using the samsung 128gb pro select UHS-I U3 and this is what I got for a benchmark on my s8+
http://i.imgur.com/PePfGaF.jpg

Here's mine
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Sent from my SM-G955U using Tapatalk

Its not touching 80 or 90 in any case I think may be Sandisk one is faster as compared to Samsung's card!
Sent from my iPhone using Tapatalk

I get 60-65 read and write on my 95/90mb r/w sandisk. The very firts time I put it in and tested it I got about 80. It's a 128mb card and only has about 4gb used on it but I can't get anything aboe about 65mb ever since.

ewokuk said:
I get 60-65 read and write on my 95/90mb r/w sandisk. The very firts time I put it in and tested it I got about 80. It's a 128mb card and only has about 4gb used on it but I can't get anything aboe about 65mb ever since.
Click to expand...
Click to collapse
That's irritating and frustrating to not get the actual speed from these new high-speed cards!

itsmohsink said:
That's irritating and frustrating to not get the actual speed from these new high-speed cards!
Click to expand...
Click to collapse
You will in a lap top not with the correct reader but not in a phone.....yet
Sent from my S8 plus, Note 7, S7 Edge or S6

So I got this yesterday and I am really disappointed in its performance although it isn't too bad at all...
SanDisk Extreme 64 GB microSDXC Memory Card + SD Adapter up to 90 MB/s, Class 10, U3, V30, FFP https://www.amazon.co.uk/dp/B01HXR51DI/ref=cm_sw_r_cp_apa_lyWczbBDHYGXN

underdog_656 said:
So I got this yesterday and I am really disappointed in its performance although it isn't too bad at all...
SanDisk Extreme 64 GB microSDXC Memory Card + SD Adapter up to 90 MB/s, Class 10, U3, V30, FFP https://www.amazon.co.uk/dp/B01HXR51DI/ref=cm_sw_r_cp_apa_lyWczbBDHYGXN
Click to expand...
Click to collapse
Same card as mine but I have the 128gb. Similar speeds too. I think that is about the best we will get on these phones, topping out around 65mb. Although the sd card speed ratings are based on perfect scenarios and we probably shouldn't expect them to hit 90mb, I don't think the phone is capable of going any faster than about 65 anyway, that is the fastest I have had on it and am yet to see anyone with higher.