I ran some tests on two different usb cables, and the supplied USB device from Lexar that came with this card using Crystal Disk Mark 3.0.1
I setup CDM as follows:
1. 5 reiterations of 100mb for testing.
2. The same USB port on my PC was used for all tests. This was a powered USB hub.
3. The two wire tests were with the card in the X10a running SE 2.1 update-1
4. The third test was done with the card in the Lexar usb device that came with the card in the same port that the wires were connected. Sorry that the drive letter changed.
One cable was a Belkin retractable cable, with thin flat wires, not shielded, no ferrite core, cost about $5.
One cable was the SE-OEM cable, with thick rubber cover, possibly shielding around cable and a ferrite core.
Look at the cable tests, sometimes the cheap Belkin was just as fast writing as the OEM; I think it's within the margin of error, for the test. I don't want to burn out my cards with hundreds of tests to work out the variation. What it really shows is that the cards will transfer. read/write better outside the phone - but you knew that already.
The Kingston class 4 32G was put into the Lexar usb holder rather than the usb holder that came with it for the test. Read speed is surprising isn't it? But the Kingston is much slower in the write and doesn't perform as well when installed in the X10a than the external test. Also the Kingston is 95% full, not as empty as the Lexar since I use it to play some of the 4500 songs on it in the car. This MAY have a bearing on the write tests, but there's at least a Gig of open space, and the test was only 100mb.
Here's a surprise, the Sony 8G Class 4 card that came with the phone, just as good as a class 10! Put into the Lexar reader, too.
hmm, interesting, thanks for posting your findings!
Furthermore, now the ROMs have the SD Card Speed Boost mod.
Eugene1991 said:
Furthermore, now the ROMs have the SD Card Speed Boost mod.
Click to expand...
Click to collapse
I have that, it's significant for read speeds, but it's not in place when the SD card is a mount point on another computer; the SD card can't be used by the phone. So if you have apps or icons (as I do) on the SD card, when I mount it, the running apps can't locate the needed icons for the home screen, etc.
The kingston class 4 32G is on sale this weekend at Newegg.com for $70 USD.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820139391
I read bad things about the Lexar, data corruption and write speeds 10MB/s.
Because of that I bought the Patriot 32GB Class 10, which writes @ 10.5MB/s in my phone.
Bad thing is that the Patriot costs around 10€ more.
Sent from my X10i using XDA Premium App
Flo95 said:
I read bad things about the Lexar, data corruption and write speeds 10MB/s.
Because of that I bought the Patriot 32GB Class 10, which writes @ 10.5MB/s in my phone.
Bad thing is that the Patriot costs around 10€ more.
Click to expand...
Click to collapse
I have a Lexar 32G Class 10 as well as the Kingston 32G Class 4. The Lexar write speeds are fantastic, and I don't feel any lag like I do with the Kingston. and in some months of use, I've had no problems or errors. I keep most stuff pretty matched between the two, but have all my music on the Kingston which is on that tiny usb reader in the photo of the unit. It's a 'charm' on on my keychain. Nothing like having 32 extra gig handy.
Every time I write this stuff, I remember the first commercial computer I programmed on - outside of college; the hard drive was as big as a tire and 256mb. It only had 48K of memory (but you could program as if it had 64K) and 32 people could work on it at the same time. No one thought at the time that anyone a) needed 32G or that it would b) be the size of a thumbnail.
stan.s said:
I have a Lexar 32G Class 10 as well as the Kingston 32G Class 4. The Lexar write speeds are fantastic, and I don't feel any lag like I do with the Kingston. and in some months of use, I've had no problems or errors. I keep most stuff pretty matched between the two, but have all my music on the Kingston which is on that tiny usb reader in the photo of the unit. It's a 'charm' on on my keychain. Nothing like having 32 extra gig handy.
Every time I write this stuff, I remember the first commercial computer I programmed on - outside of college; the hard drive was as big as a tire and 256mb. It only had 48K of memory (but you could program as if it had 64K) and 32 people could work on it at the same time. No one thought at the time that anyone a) needed 32G or that it would b) be the size of a thumbnail.
Click to expand...
Click to collapse
Reminds me of those old HP systems that needed a clean room.
My dad played dungeons while doing chemical analysis.
Then we got a 486 and he was all freaked out when i opened the case.
I tested 32GB lexar class6 and got very very similar results on my x10.
OmegaRED^ said:
Reminds me of those old HP systems that needed a clean room.
My dad played dungeons while doing chemical analysis.
Then we got a 486 and he was all freaked out when i opened the case.
I tested 32GB lexar class6 and got very very similar results on my x10.
Click to expand...
Click to collapse
Class 6?
Star Trek w the. 'Kirk add Kirk ' option so you didn't have to calculate the math to fire the photon torpedoes. Played on a teletype connected to the mainframe.
Sent from my X10a using XDA Premium App
stan.s said:
Class 6?
Star Trek w the. 'Kirk add Kirk ' option so you didn't have to calculate the math to fire the photon torpedoes. Played on a teletype connected to the mainframe.
Sent from my X10a using XDA Premium App
Click to expand...
Click to collapse
Sorry, My bad it's a 16 GB.
Why the hell did i type 32GB.
Related
Hi, sorry if this is a double post. I did look around but could not find much info.
I'm interested to know how well the new 16GB MicroSD cards work on the Xperia. Anyone using one of these? My main concern is that they all seem to only be class 2 atm. Is this too slow to run apps and my videos stored on it etc?
Should I wait till a class 4 16GB card comes out?
Thanks
Edit: I also noticed that SanDisk has a “Mobile Ultra” memory card range. Only up to 8GB though. Anyone using one of these? Is there a big difference in speeds?
i don't think it matters in a phone.
I ordered the eact same Mobile Ultra card today. Should be here saturday, so I will tell when I get it. But assuming it's Class 6 card, it should be fast. I wouldn't go with Class 2, since it's slow. But as Jabe says, it might not matter on the phone.
So as at now no one's using a 16GB yet?
Give me a week or 2. I'm planning on ordering the Sandisk one.
Sandisk Mobile Ultra is good, and it's what I am using for X1. Since it's class 6, the read/write speed is about 20/16 mb/s, which is much faster than class 2. If you wanna watch video storaged in card, this one is your first choice.
wdq30 said:
Sandisk Mobile Ultra is good, and it's what I am using for X1. Since it's class 6, the read/write speed is about 20/16 mb/s, which is much faster than class 2. If you wanna watch video storaged in card, this one is your first choice.
Click to expand...
Click to collapse
Note that the speed in the end is depending on the host itself. If the host is slow, even if you use class 6 memory card, it's not going to make any difference. Personally I believe the phone itself would be the bottleneck and not the memory card.
I know it's not totally relevant but just for reference, take a look at the link below. As you can see the speed of class 2 and 6 are pretty identical as it's limited by the host. This is even with a dedicated memory card reader. Compare the 2nd and 4th entries from the bottom.
http://www.robgalbraith.com/bins/reader_report_multi_page.asp?cid=6007-9438
VaThInK said:
Note that the speed in the end is depending on the host itself. If the host is slow, even if you use class 6 memory card, it's not going to make any difference. Personally I believe the phone itself would be the bottleneck and not the memory card.
I know it's not totally relevant but just for reference, take a look at the link below. As you can see the speed of class 2 and 6 are pretty identical as it's limited by the host. This is even with a dedicated memory card reader. Compare the 2nd and 4th entries from the bottom.
http://www.robgalbraith.com/bins/reader_report_multi_page.asp?cid=6007-9438
Click to expand...
Click to collapse
If that's the case, what's the optimal speed supported by X1?
So anyone able to compare the 2 classes
ipporek said:
So as at now no one's using a 16GB yet?
Click to expand...
Click to collapse
I'm using a 16GB Class 2 at the moment. No probs with apps or music. But I have no videos on the card...
with normal sd cards the pdas were mostly not able to transfer as fast as the sd card supported
as the sd interface in onchip and not that fast
would like to see some tests if the same hold true with newer pda's and class X microSD cards
anyone able to follow this up yet?
I'm using a Sandisk 8gb Class 4 HC. No problems with speed or data read/write (on the phone itself).
Using the phone as a disk drive though (not activesync) is noticeably slower than using a USB adapter, *suggesting* the phone itself is the bottleneck?
I'm using a SanDisk 8GB Class II Card and I had no problems with photos, videos or music so far.
Don't think a Class 4 or 6 is worth the price in a mobile phone.
I got my 16GB Microsdhc today. And everything works. Sad thing is it only shows 15GB.
I find no difference in speed between my 8G class 6 and 16G class 2 (both from Sandisk)
xmoo said:
I got my 16GB Microsdhc today. And everything works. Sad thing is it only shows 15GB.
Click to expand...
Click to collapse
it's 15G probably because of the way how "G" is being calculated. 16,000,000,000 = 16,000,000,000/(1024*1024*1024) = 14.9GB
im using a 8g class 4 card, music, apps and vids work great.
just a quick question, the x1 has a sd card limit of 32g, when a larger card comes out like the 128gb card that sandisk has said will come out, could windows mobile have a update so that it can read it or is limited to the reader hardware inside the x1
I have 2 cards: Sandisk 16GB Class 2 and Kingston 8GB class 4.
I use Sandisk in Xperia, and the speed is more than sufficient. It reaches 12-15 MB/s writing on USB adapter. Reading - it's no problem reaching even more. So it's ok, speed wise.
I don't think you would need more speed in Xperia )
There's no HD video recording option in there )
one can use pocket mechanics to benchmark the sdcard speed
if the results are lower i would suspect it show the bottleneck speed
of the sd interface of the qualcomm cpu in x1
I have a 16gb micro sdhc and some .avi videos lag (highish quality). Specifically, top gear season 12 episodes from finalgear.com. it might be the divx client though, Im using the WM 6 Pro version available on the divx website.
Found some Transcend and A-Data class 6 MicroSDHC cards that are sold cheaply on Amazon, but I'm not sure I want to spend the extra cash if the Evo has bottlenecked write/read speeds. So I was wandering if any of you have tested out a class 6 or 10 MicroSDHC card on the Evo.
The Evo comes with a Class 2 card.
Download "SD Card Speed Tester" from android market to base our results. Will be posting mine in a bit.
First test results for 8GB Class 2 MicroSDHC Card(Comes with Evo):
Write speed is 2.0MB/s
Read speed is 9.0MB/s
Second test same card:
Write 4MB/s
Read 9MB/s
Well I read that this test is inaccurate. I will try to find better, external methods.
Does the Geebees matter when it comes write/read speeds on SDHC cards?
I bought a 32GB class 6 from ebay. took a few weeks to get since it came from hong kong and i paid 40 bucks :] anyways, writing to the sd seems smoother to me. i havent "truly" tested since im a complete n00b
ripalsanghani said:
I bought a 32GB class 6 from ebay. took a few weeks to get since it came from hong kong and i paid 40 bucks
Click to expand...
Click to collapse
Since there are no 32 gb class 6 cards... you got taken.
I bought a 16 g class 6 in amazon. How do i test it? I mean to me writes and reads fast but is there a appl for that?
mikevillarroel said:
I bought a 16 g class 6 in amazon. How do i test it? I mean to me writes and reads fast but is there a appl for that?
Click to expand...
Click to collapse
Download "SD card speed tester" from android market.
without any "real" tests in android there really doesn't seem much of an improvement. mainly b/c the small amount of data that apps use.
nandroid back ups are faster though and prepping sd card at boot up is faster.
no numbers though.
madsquabbles said:
without any "real" tests in android there really doesn't seem much of an improvement. mainly b/c the small amount of data that apps use.
nandroid back ups are faster though and prepping sd card at boot up is faster.
no numbers though.
Click to expand...
Click to collapse
What about 720p recording.
Plancy said:
What about 720p recording.
Click to expand...
Click to collapse
shoot, didn't think of testing that.
if no one else does it i'll do it later today if i can.
i went to a 16 gig class 2 card since space was more important than speed for me.
madsquabbles said:
shoot, didn't think of testing that.
if no one else does it i'll do it later today if i can.
i went to a 16 gig class 2 card since space was more important than speed for me.
Click to expand...
Click to collapse
Oh please do, can't test it, don't have a class 6 card. Hope some people who do stumble onto this thread.
I bought a 16GB Class 6 mSDHC card and I can tell you that it is noticeably better than the shipped 8GB Class2 card. I notice it most when playing back high bitrate vid, I ripped some stuff from blu-ray to 800x480 mpeg4 and it loads the video faster now and plays without a single hiccup. Also from time to time I would get hiccups in the 720p videos recording with the class2 and I have not had a single hiccup with my class 6 card.
These are just my observations I have no actual measurements to compare so take this with a grain of salt.
djmend said:
I bought a 16GB Class 6 mSDHC card and I can tell you that it is noticeably better than the shipped 8GB Class2 card. I notice it most when playing back high bitrate vid, I ripped some stuff from blu-ray to 800x480 mpeg4 and it loads the video faster now and plays without a single hiccup. Also from time to time I would get hiccups in the 720p videos recording with the class2 and I have not had a single hiccup with my class 6 card.
These are just my observations I have no actual measurements to compare so take this with a grain of salt.
Click to expand...
Click to collapse
, what brand/where did you get your Card?
posguy99 said:
Since there are no 32 gb class 6 cards... you got taken.
Click to expand...
Click to collapse
Sorry, confused myself with the standard SD.
I just ran that SD speed card test, transcend c6 card. Not using a2sd or anything else. It reports write speed at 5MB/s, read at 10MB/s. Says its a c4 card. Dont know how accurate the test is but thought itd be useful posting...
*edit* ran it a second time and got write at 5, read at 11. Seems pretty consistant
TrevE said:
I just ran that SD speed card test, transcend c6 card. Not using a2sd or anything else. It reports write speed at 5MB/s, read at 10MB/s. Says its a c4 card. Dont know how accurate the test is but thought itd be useful posting...
*edit* ran it a second time and got write at 5, read at 11. Seems pretty consistant
Click to expand...
Click to collapse
Test multiple times, for some reason I got 4MB/s write the second time.
ran test a 3rd/4th time.
Write 6MB/s
Read 10MB/s
Write 5MB/s
Read 11MB/s
A fluctuation of a meg up or down i think is normal. The program might also round seeing i saw no partial numbers. Now as far as if its worth it to get a c6 id say yes regardless just for the wearleveling features.
from cyaogen wiki: http://wiki.cyanogenmod.com/index.php/Swap_and_Compcache
However, newer, high-end SD cards feature wear leveling, a mechanism that distributes write wear uniformly over the entire memory card by dynamically remapping logical memory blocks to different physical memory blocks over time. This largely alleviates the issue of card wear when using applications that tend to write to the same memory blocks over and over (i.e. swap). Most Class 6 microSDHC cards include hardware wear leveling, while Class 4 and lower cards typically do not. This feature depends on the decision of your card's manufacturer. A-Data and Transcend Class 6 cards were specifically cited as having hardware wear leveling.
Click to expand...
Click to collapse
I have a 16GBA a-data class 6 in mine and the speed test is showing 8mb write and 12mb read. Not sure how accurate that is though, the read speed is about 4mb faster than what my computer told me it was.
A-data cards are fast but if you get another brand make sure other people are saying they can do what they say they can. There are a lot of companies who flat out lie.
Plancy said:
Download "SD card speed tester" from android market.
Click to expand...
Click to collapse
Don't know if it's good or not but at least says is a class6
I seem to have gotten lucky with my Class 2 16GB.
Ran SD Card Speed Test from the market 3 times, and all 3 tests came back with at least 6MB/s write speed. Got it for $25 shipped off of Ebay. PM me if you want the seller, maybe someone else can get lucky too...
ripalsanghani said:
I bought a 32GB class 6 from ebay. took a few weeks to get since it came from hong kong and i paid 40 bucks :] anyways, writing to the sd seems smoother to me. i havent "truly" tested since im a complete n00b
Click to expand...
Click to collapse
Make sure you test it thoroughly before you run out of time to file a claim. There have been a lot of 16gb cards with the 32gb markings coming from china. It's formatted so it looks like the space is there but they wont let you use more than 16gig
Actually alot of the cards on ebay at 2gb cards. Not even a full 8 or 16. Also if you want to do a better test for your sd card speads use ATTO. its free and gives alot better breakdown. It runs on your PC.
I'm sorry to report that I've returned the Kingston Class 4 32Gb microSD card for its failure to perform.
Performance writing to this Kingston card (from a desktop PC, card in either the N1, or the PC's card reader) was ~820KB/Sec
Writing the same data files to a Sandisk Class 2 16Gb card I achieved > 1.5MB/sec - i.e. approx twice as fast.
(PC is Acer Quad core 2.6Ghz jobbie with 8Gb RAM running Windows 7)
I found it really hard to get 4MB/sec out of the Kingston card - and only achieved it with 1 of the test options on CrystalMark. (write 1Gb sequential files)
When I tried this test with the 16Gb Sandisk class 2 card I got 10MB/sec. Clearly the SanDisk isn't a class 10 card - so I'm guessing the Crystal benchmark test isn't completely appropriate for SD card writers!.
I supplied Kingston with the packaging details / photos etc and they confirmed that it IS a real Kingston class 4 card. They agreed that performance should be better. LamndaTek clearly agreed too - after they received my return and tested it they gave me a full refund. (32Gb £83.66 (Inc VAT)). (Many thanks guys)
I guess the card was faulty.. but I might just be placing my trust in Sandisk now, as I've never had any problems with their cards.
I just thought that you all should know..
Graham
did you test it with a card adaptor or from the nexus one?
Also, if you're writing hundreds of small files vs one large file it makes a difference.
I think it was just a defective card.
Even the POS 32Gb cards floating around out there write at faster than 800kb/sec mb/sec.
SanDisk suck!
I will never buy any sandisk flash,sd card, micro again.. they have the worst CS i have ever delt with.. THey stand on their High Horse thinking their **** dont stink just because they said they only have a 1% defective rate.. which is crap if you ask me.. i went through some many defective flash drives used as keeping files on them and music to play in my scion xb.. So pretty much they told me i was mis using the device.. so i told them i would never buy from them..
so Kingston all the way now. they have the best CS i have ever delt with.. good day!
mynameisjon said:
did you test it with a card adaptor or from the nexus one?
Click to expand...
Click to collapse
I tested it with both options - the supplied adaptor - and also in the Nexus 1 - couldn't get it faster that I quoted, in any combination. Even tried a reformat - still no good.
Also, if you're writing hundreds of small files vs one large file it makes a difference.
Click to expand...
Click to collapse
It was a mixture of file sizes for the main copy, i.e. the contents of the 16Gb drive over to the 32Gb drive. About 14Gb were music files which come in at about 4Mb each.
As the other guys said above Kingston customer services were very responsive once they identified the card as genuine.. but LambdaTek were even more so.
I've still never had a Sandisk product give me an error though (I have 3 cards from them)
G.
I've used SanDisk for years without issue. Also been extremely happy with Lexar. Kingston, on the other hand, has been a complete letdown to me! A couple years ago, I bought a 4gb class 6 Kingston card for my digital camera. I didn't run any controlled benchmarks, but real-world use showed only about 2-3mb/sec transfer rates, which I thought was kind of slow. Also, as I was using a card reader instead of just plugging my camera in every time I needed to move pictures, the card was constantly being moved between devices. This proved fatal to the card, as the cheap plastic began to come apart. Never ever have I seen that happen to *any* SD card, even the cheap no-name ones! It started with the little tabs between each of the contacts, but didn't take long before the top and bottom of the card had begun to split. After a few months, the Kingston card was no good - all because of a disappointing casing. I wasn't rough with the card - I didn't treat this card any differently than others. In fact, I still have a 64mb SanDisk card from several years ago that's still going strong (great for sharing some jpgs, docs, etc.) So it might be worthwhile staying away from Kingston altogether...
Brands I've been happy with:
SanDisk
Lexar
Duracell
Transcend
Brands I've been disappointed with:
Kingston
so what is the deal with the N1 and its SD card speed?
i have a Transcend 8gb Class 6 card, i bought it for my G1 and recently got a N1.
on my G1 i would get an as expected 6 mb/sec or better copying files to/from it. in the N1 its never much more than 2mb/sec at most. this is apparently just when copying files via usb though
i just ran the app j bench mark 1.0.
when set to 10mb (2kb buffer) the default and lowest test setting i get
1.5mb sec write 2.5mb sec read
when set to 100mb (8km buffer) i get
6.16 mb/sec write
10.34 mb/sec read
so clearly internally the phone can and does handle the card at full speed but connected to PC's it does not.
and before anyone says it yeah i know just use a card reader to transfer large files.. whatever shouldn't need to do that imho
(megabytes not bits i am quoting here, i know the difference)
I have sandisk 16gb class 2 and under android 2.2 I gоt 1.5 mb/s and under android 2.1 I gоt 7-8 mb/s
gf_gollum said:
I'm sorry to report that I've returned the Kingston Class 4 32Gb microSD card for its failure to perform.
Performance writing to this Kingston card (from a desktop PC, card in either the N1, or the PC's card reader) was ~820KB/Sec
Writing the same data files to a Sandisk Class 2 16Gb card I achieved > 1.5MB/sec - i.e. approx twice as fast.
(PC is Acer Quad core 2.6Ghz jobbie with 8Gb RAM running Windows 7)
I found it really hard to get 4MB/sec out of the Kingston card - and only achieved it with 1 of the test options on CrystalMark. (write 1Gb sequential files)
When I tried this test with the 16Gb Sandisk class 2 card I got 10MB/sec. Clearly the SanDisk isn't a class 10 card - so I'm guessing the Crystal benchmark test isn't completely appropriate for SD card writers!.
I supplied Kingston with the packaging details / photos etc and they confirmed that it IS a real Kingston class 4 card. They agreed that performance should be better. LamndaTek clearly agreed too - after they received my return and tested it they gave me a full refund. (32Gb £83.66 (Inc VAT)). (Many thanks guys)
I guess the card was faulty.. but I might just be placing my trust in Sandisk now, as I've never had any problems with their cards.
I just thought that you all should know..
Graham
Click to expand...
Click to collapse
Had the same problem... RMA'd it with newegg and the replacement comes in tomorrow... I hold out hope.
Sandisk more me, no problem so far
My replacement Kingston class 4 holds out class 2 speeds on write of large files, less than that on write of small files. Blazingly slow on write, but faster on read than my class 6 8gb sandisk...
All in all... I can live with it for now...
The article below is an interesting read regarding Kingston and the sdcard market in general.
http://www.bunniestudios.com/blog/?p=918
How much does the class rating of an SD card make a difference in a phone?
New Egg has a great deal on a 16GB Class 4 card.
I have a class 4 card now, but I've never used a 6 or 10. So I don't know if there's a whole world of performance I'm missing out on.
I run Cyanogen so I do have a considerable amount of APP2SD action going on. But I don't otherwise write to the SD card a considerable amount. Don't take a lot of videos....don't transfer 4 or 5 GB worth of music everyday. Nothing like that.
Visit Wikipedia or Google for the transfer rates and think about how much I/O you will be doing. The more stuff apps and data you store on your card the more important the performace and compare that to what experience you have.
Being used to sticking a stick in a USB 1.1 slot and groaning at old computers, so I tend to divide by 2 when judging such things. E.g. if it's 480m/b, I make the expectation off reality being closer to 240m/b. Can't complain about MicroSD's much since my current handset has a freebie 2GB >_<. I assume it's class 4 but it is fine for me, and most of my stuff is on it.
Sent from my Transformer TF101 using Tapatalk
Take one thing into consideration: class of the SD card means nothing, if the device's own transfer (specifically, write) rate is too slow to utilize it.
Jack_R1 said:
Take one thing into consideration: class of the SD card means nothing, if the device's own transfer (specifically, write) rate is too slow to utilize it.
Click to expand...
Click to collapse
Well that's a good point.
I have no idea what the write speed of a MT4G is. But I've had a Class 4 card since I bought the phone and it seems to work nicely. I've never said "Man I can't believe it's taking this long to save this file!"
So I went for the $17 special on New Egg for a 16GB Kingston card.
Search micro SD card 16gb on New Egg. It's the cheapest one. Brand name. Free shipping. Can't go wrong there.
No point in getting a class 10 unless you transfer via this usb adapters.. I think the mytouch stops at like class 8. Not worth it unless on sale. You can live with a couple seconds of wait time
Sent from my HTC_Amaze_4G using XDA App
Jack_R1 said:
Take one thing into consideration: class of the SD card means nothing, if the device's own transfer (specifically, write) rate is too slow to utilize it.
Click to expand...
Click to collapse
I agree, I wouldn't go any higher than a class 4 or 6 for a phone. I have a ADATA 16gb class 6 and have never had any problems with transfer/read/write speeds
Sent from my HTC Glacier using xda premium
I have a Class 10 card, but only because I transfer files to and from my computer on a semi-regular basis. I used an 8GB microSDHC Class 4 card in my previous phone and one time I found myself needing to transfer a lot of data off of a computer. All I had left on hand was that Class 4 card with its SD adapter and it was horribly slow in my SanDisk MicroMate adapter that I typically use in conjunction with a 4GB SanDisk Extreme III SDHC card as a flash drive.
I agree that you're not going to get much more out of the phone itself beyond Class 6.
I recently bought a Kingston micro SD card 32gb u3 with 90 read 80 write speed. After full formatting on pc and then formatting it with the phone as external storage It works fine for up to 20~30 minutes max before auto ejecting it self. The is no notification or anything from the phone. If I go to storage setting it just simply has vanished from the list. Once I tried transferring a 4gb file to the SD card to see if it will have any issue and halfway through the process the transfer meter stopped followed by a notification saying it is not recommended ejecting the SD card at this time and then completely ejecting it once more. I'm running full stock on September security patch. Any ideas? I returned it to the reseller and ordered a similar one incase this was faulty.
CostasV23 said:
I recently bought a Kingston micro SD card 32gb u3 with 90 read 80 write speed. After full formatting on pc and then formatting it with the phone as external storage It works fine for up to 20~30 minutes max before auto ejecting it self. The is no notification or anything from the phone. If I go to storage setting it just simply has vanished from the list. Once I tried transferring a 4gb file to the SD card to see if it will have any issue and halfway through the process the transfer meter stopped followed by a notification saying it is not recommended ejecting the SD card at this time and then completely ejecting it once more. I'm running full stock on September security patch. Any ideas? I returned it to the reseller and ordered a similar one incase this was faulty.
Click to expand...
Click to collapse
Kingston cards are not the most reputable, but this issue sounds more phone related then a defective card... Try an old school fix, but a layer or two of scotch tape on the back side of the card, slightly increasing the thickness of the card, might maintain contact better.
acejavelin said:
Kingston cards are not the most reputable, but this issue sounds more phone related then a defective card... Try an old school fix, but a layer or two of scotch tape on the back side of the card, slightly increasing the thickness of the card, might maintain contact better.
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The thing is first I noticed upon inserting the SD card that it was slightly thicker than the casing so it required a little bit more force. I don't think though it's a thickness problem because a class 10 verbatim u1 card and a class 6 I use now didn't have any problem whatsoever. The new class 6 is an 8gb kingston and when inserted in the space it was moving around a bit, but after inserting it in the phone no problem. Is a SanDisk card recommended as an alternative?
CostasV23 said:
The thing is first I noticed upon inserting the SD card that it was slightly thicker than the casing so it required a little bit more force. I don't think though it's a thickness problem because a class 10 verbatim u1 card and a class 6 I use now didn't have any problem whatsoever. The new class 6 is an 8gb kingston and when inserted in the space it was moving around a bit, but after inserting it in the phone no problem. Is a SanDisk card recommended as an alternative?
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Personally I don't care for them... I recommend Samsung, EVO+ or higher grade.
acejavelin said:
Personally I don't care for them... I recommend Samsung, EVO+ or higher grade.
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What card are you using that is the most reliable for our phone? Should I go for the evo+ if kingston fails me again?
CostasV23 said:
What card are you using that is the most reliable for our phone? Should I go for the evo+ if kingston fails me again?
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I have a 2 year old 64GB EVO (non-plus) in my MXPE, works beautifully... My Moto G3 has a 32 EVO+, and my son's Axon 7 has a SanDisk Extreme something (black with red lettering) that is a couple years old as well. All of them work fine.
When people ask me what to get, I recommend the EVO+ for a budget card, or Samsung Pro+ for higher-end applications.
acejavelin said:
I have a 2 year old 64GB EVO (non-plus) in my MXPE, works beautifully... My Moto G3 has a 32 EVO+, and my son's Axon 7 has a SanDisk Extreme something (black with red lettering) that is a couple years old as well. All of them work fine.
When people ask me what to get, I recommend the EVO+ for a budget card, or Samsung Pro+ for higher-end applications.
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The thing is is the SD on your mxpe u3? I'm looking forward to shoot some 4k videos and I want a SD card that can handle it. Im thinking it might be compatibility issue even though I read it supports u3
CostasV23 said:
The thing is is the SD on your mxpe u3? I'm looking forward to shoot some 4k videos and I want a SD card that can handle it. Im thinking it might be compatibility issue even though I read it supports u3
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The reader in the MXPE is UHS-I, cards are rated in speed class (Class 10, U1, U3) and reader's SD bus speeds are UHS (UHS-I or UHS-II). I have never seen a benchmark for the card reader that is reliable but 70MB/s sustained writes with a proper card are regularly seen. UHS-I is limited to about 90MB/s write speed provided the card can handle it. But really 4K uncompress video only requires about 30MB/s. Although a UHS-II SD bus would be nice, a good U3 card is more than fast enough even at very high frame rates (4k with HD audio at 120 fps is about 60MB/s, depending on codec).
I have recorded 4k (2160p) video using the default camera app on occasion with my old EVO card, no issues with extended recording or frame drops.
acejavelin said:
The reader in the MXPE is UHS-I, cards are rated in speed class (Class 10, U1, U3) and reader's SD bus speeds are UHS (UHS-I or UHS-II). I have never seen a benchmark for the card reader. UHS-I is limited to about 90MB/s write speed provided the card can handle it. But really 4K uncompress video only requires about 30MB/s. Although a UHS-II SD bus would be nice, a good U3 card is more than fast enough even at very high frame rates (4k with HD audio at 120 fps is about 60MB/s, depending on codec).
I have recorded 4k (2160p) video using the default camera app on occasion with my old EVO card, no issues with extended recording or frame drops.
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Nice to know thanks for your time
So after receiving the new Kingston SD card same type u3 at first input on the phone it worked fine for about 3 hours or so . After this I changed user on the phone to do something and it had lost it . After a reboot the SD card was readable for about 4 minutes . After a second reboot and leaving the phone alone it didn't eject after an hour . Reformatted it as read on a forum that said to clean media and external storage data and reboot . Worked fine form an hour and ejected once more . Thing is I chose Kingston SD card because it is the fast with the best price . Should I just go with SanDisk or Samsung now?
Kingston cards are junk and have never worked well for me. Samsung and Sony cards have been flawless in multiple devices and multiple sizes. Also I have had good luck with Lexar cards currently have a Lexar 128gb in my Moto X pure