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I have seen various makes / models on the market and I am thinking about a
SanDisk Ultra II 512 card
Does anyone have any experiance of this model
Ashby
512 SD card
what about a 1gb card has anyone got any suggestions on which one to get the o2 data support said that there are 1gb sd cards out there but all they've tested is up to 512 mb. They are firmly against the MMC cards but they couldn't explain why. The MMC card is cheaper.
Re: 512 SD card
jkn said:
what about a 1gb card has anyone got any suggestions on which one to get the o2 data support said that there are 1gb sd cards out there but all they've tested is up to 512 mb. They are firmly against the MMC cards but they couldn't explain why. The MMC card is cheaper.
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Click to collapse
The 1-GB SD cards only became available for purchase a little over a week ago.
The MMC is cheaper because it has a lower maximum transfer rate. But I have found many stores where the price of MMC and SD cards are the same.
Ultra II sd cards as far as i know only run at ultra speed if your sd-slot support it
ok guys any idea
how much a 1gb sd disk will cost, compatability and where from
cheers john
jkn said:
ok guys any idea
how much a 1gb sd disk will cost, compatability and where from
cheers john
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Click to collapse
As far as I know, the only 1-GB SD card brand available now is SanDisk. The price is around US$395. Other brands will soon follow.
with the price of 1GB compared to 512 and 256 then i'd rather have more cards and switch between them like
1 for goat and sheep p0rn collection
1 for mp3 music
1 gps maps (if i had a gps device)
1 for programs
......
Rudegar said:
with the price of 1GB compared to 512 and 256 then i'd rather have more cards and switch between them like
1 for goat and sheep p0rn collection
1 for mp3 music
1 gps maps (if i had a gps device)
1 for programs
......
Click to expand...
Click to collapse
totally agree
as only one has just come out it's likely to be quite expensive
but if people keep a look out they can let us know when other models come out and where to get the best prices
failing that they could swap their donkey porn collection that takes up less memory !
I use a Kingston 512mB SD, works well in the XDA II, no speed problems or loss of data. I use it mainly for camera images and large data files but also for my regular backup (Sprite Backup Premium) and several applications which I don't use often.
Ed
I have a 512mb ultra ii on order, for quicker access to gps maps and voice etc, and should receive it next week. I'll try to post back here when I've tried it, assuming that there is any discernable difference.
frankly speaking I use regular sandisk 512MB SD card only due to high price for everything with Kingston sticker on it, IMHO kingston has not been manufacturing memory cards for years but branding other manufacturers products, including memory ...
one thing that is of interest to me is .... whether these sandisk ultra II SD cards are really faster and to waht extent, especially considering the fact what is the SD card port in XDA / XDA II, i.e. what is the internal port speed limit as compared with new and speedy cards ??
regards, monika
PinkySlayer said:
I have a 512mb ultra ii on order, for quicker access to gps maps and voice etc, and should receive it next week. I'll try to post back here when I've tried it, assuming that there is any discernable difference.
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Click to collapse
I've just received the ultra ii and although I haven't USED it yet, here are some benchmarks...
Internal Integral SanDisk Ultra II
Read MB/s 1.55 0.13 0.20
Write MB/s 0.10 0.02 0.68
Min Read ms 0.25 0.25 0.25
Max Read ms 1.50 9.75 8.5
Ave Read ms 0.32 4.14 2.43
Total Read ms 813 10368 6089
Min Write ms 0.25 0.75 0.28
Max Write ms 165 108 6.75
Ave Write ms 4.87 28.85 0.72
Total Write ms 12310 72246 1810
I've only done a quick test abd should really have repeated them several times and taken averages. However, this clearly shows that the Ultra is built to WRITE FAST, even blowing away my XDA II's internal storage.
sandisk 256MB
I just bought my second sandisk 256MB works fine for me, i bought it for my new NAVMAN 4410
I use a Kingston 512Mb
Works great, using it mostly for watching divx but I also have some music and GPS maps on it. In Sweden Kingston is much cheaper then Sandisk.
The only strange thing is that Im only able to use 488Mb...
The card was preformated so maybe thats a reason...
Steves digicams did a big test some time ago on compactflash memorys and the ultra memorys wasnt always faster. I would save the money and buy regular, its fast enough for the programs in the XDAII.
/miki
seem to recall that all sd cards give you less then they are labeld because of the secure encryption features which make SD cards different from mmc cards apart from being a bit thicker
has,nt anybody got any price,s?
I paid £129 through eBay.
Sandisk 512 Mb for € 159,-
www.geheugenkaart.be
So around £129 for an Ultra II or around £107 for a 'normal' one - I know which one I'd rather have!
thanks i think its time i get my wallet out.hehe
Does anyone know the specific read and write megabytes per second limitations of our cpu's? More specifically i am wondering if we would benefit from a class 10 or if anything beyond a class 6 or are we wasting our money cuz the phone's cpu cant match the read and write speeds of a class 10. Also does anyone know how accurate sd card speed tester app is? I used it and it said with the stock class 2 sd card that it was reading 13mb per sec and writing 7mb per sec. If that is accurate then to my knowledge We would benefit from atleast a class 6 or higher.
I've looked for specs on this as well, but can't find anything, just that the max size supported is 32gb microsdhc. ;\ Would you really want to spend the money on a Class 10 card, though? $90 bucks for 16gb? No danke.
jbadboy2007 said:
Does anyone know the specific read and write megabytes per second limitations of our cpu's? More specifically i am wondering if we would benefit from a class 10 or if anything beyond a class 6 or are we wasting our money cuz the phone's cpu cant match the read and write speeds of a class 10. Also does anyone know how accurate sd card speed tester app is? I used it and it said with the stock class 2 sd card that it was reading 13mb per sec and writing 7mb per sec. If that is accurate then to my knowledge We would benefit from atleast a class 6 or higher.
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Click to collapse
The CPU itself would not be the limiting factor.
One tip: Sandisk's most expensive Class 10 flash is NOT the fastest for random-access reads. I've seen benchmarks done in multiple places that show that other brands (mostly sold by Newegg, nothing you can even fantasize about buying in a major retail store) are up to 50% faster.
The paradox is because "class" measures ONLY write speeds, but the way most guys here use it is as a fake hard drive in ways that are more read-intensive. Sandisk's target market isn't performance-oriented owners of high-end Android phones. Their target market is video professionals who only care about reliability and storage-life. As a result, if they have to choose between optimizing for long-term data integrity and raw blazing performance, they'll go for integrity every time as long as write performance is fast enough to meet the standard.
If you're going to walk into a store like CompUSA/TigerDirect and buy flash without reading reviews, your best bet is probably class 6. It's dirt cheap compared to class 10, and isn't much slower than average-benchmarking class 10 when it comes to reads. More to the point, it's cheap enough that if you strike out, you can chuck it and buy a more carefully-researched second card online without hating yourself for the next year. If you spend $15-20 on a mediocre class 6 4-gig card, it's not a big deal. If you spend $120+ on a mediocre class-10 16-gig card, you're basically stuck with it for the next 2 years unless you can unload it on somebody who doesn't know better.
write speeds are the more intensive and slower than read speeds. Kingston sells their products based upon write speeds. sandisk sells upon read speeds. kingston class 10 sd card equals 10 mb write speeds 19 mb read speeds sanddisk class 10 is 10 mb read and 7-8mb write speeds. it takes longer to write data and takes more cpu use. the write speeds are your priority.
Class 10
I have a class 10 Sandisk and it sucks in the nexus one
for some reason if I use the card in a reader it perform ok (10MB WRITE) but in the phone it is painfully slow... and this is true either testing with an SD card test app or by hooking thru the usb cable, so something is wrong and I am not sure it's 100% the card since it perform ok in a card reader...
Doing the same with a class 2 card is transparent, same performance from any interface (USB, Internal).
I have made some test with cluster size if 4K, 16K, 32K and it's the same... The only difference is the card themself, I know they use a new SDHC 3.0 standard, maybe this is the reson why they under perform in the nexus...
jbadboy2007 said:
write speeds are the more intensive and slower than read speeds. Kingston sells their products based upon write speeds. sandisk sells upon read speeds. kingston class 10 sd card equals 10 mb write speeds 19 mb read speeds sanddisk class 10 is 10 mb read and 7-8mb write speeds. it takes longer to write data and takes more cpu use. the write speeds are your priority.
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Click to collapse
You are right in regard to write being more intensive than read, especially for MLC flash but AFAIK Class are part of the SD Card standard and are based on WRITE Speed, can you point out where you take this "difference" between 2 major brand, I am not a sandisk fanboy (far from it) but I doubt this is based on anything real...
actually i read in wikipedia that sandisk sells thier products by read speed and kingston sells thier products by write speed.
It's been awhile since I looked at the spec, but the class is the minimum write speed to earn that spec. Most cards seem to exceed this. The only real way to find out real speeds is via independent tests.
Sent from my SPH-D700 using Tapatalk
Are the only 32 gb cards available Class 2? I haven't found anything faster.....
Ok I know everyone has stated that the higher the class, the better the performance of Android on the HD2. Because as of now NAND has not been officially been completed, my understanding is the fact that a Class 6 sd card would be next closest thing.
I have a Samsung vibrant as well & there are virtually zero lags in games & applications. Yes I know Im comparing a Nand system to an SD card system, but hear me out.
On the current HD2/Android Build im running (Desire Sense Blue Topia) I've noticed while playing angry birds, there is some screen lag. I've also noticed this in the app drawer.
Now I know that NAND would help with performance and battery life, but I just wanna find out...
Is there anyone that was running a class 2 sd card, then upgraded to a class 6? And did you actually notice any differences?
Faster booting, less lag on apps, overall smoothness? Or is this just an old wives tale?
Thanks.
Class make no sense but read and write speed do.
I switched from Class 4 to 6, not much differences
But theoretically Class value should make sense, because it tells about the >minimum< write speed a card has.
* Class 2: 16 Mbit/s (2 MB/s)
* Class 4: 32 Mbit/s (4 MB/s)
* Class 6: 48 Mbit/s (6 MB/s)
* Class 10: 80 Mbit/s (10 MB/s)
Olioaglio
Olioaglio said:
But theoretically Class value should make sense, because it tells about the >minimum< write speed a card has.
* Class 2: 16 Mbit/s (2 MB/s)
* Class 4: 32 Mbit/s (4 MB/s)
* Class 6: 48 Mbit/s (6 MB/s)
* Class 10: 80 Mbit/s (10 MB/s)
Olioaglio
Click to expand...
Click to collapse
Whoa class 10! I didnt even know it existed.
Heres a listing...
http://cgi.ebay.com/Kingmax-8GB-Mic...emory_Cards&hash=item19c0adc2cf#ht_3119wt_905
Thats amazing.
Anyways, Ok so tonz said he went from 4 to 6 and didnt notice a difference.
How about from 2 to 6? And were you running the same build? Same set CPU processor speed?
Olioaglio said:
But theoretically Class value should make sense, because it tells about the >minimum< write speed a card has.
* Class 2: 16 Mbit/s (2 MB/s)
* Class 4: 32 Mbit/s (4 MB/s)
* Class 6: 48 Mbit/s (6 MB/s)
* Class 10: 80 Mbit/s (10 MB/s)
Olioaglio
Click to expand...
Click to collapse
But one thing to note ... the trade off of higher speed is higher power consumption.
EyeAndroid said:
Whoa class 10! I didnt even know it existed.
Thats amazing.
Anyways, Ok so tonz said he went from 4 to 6 and didnt notice a difference.
How about from 2 to 6? And were you running the same build? Same set CPU processor speed?
Click to expand...
Click to collapse
The same question , i used class 2 , and now , need i used class 4 or 6 or 10
Well i went from class 2 to class 6 and i didnt really saw a difference. Everything was the same, same setcpu speed, same all.
I doubt it worth the upgrade.
I can remember that someone said that the internal sd card controller has a speed limit. for sure class 6 gives higher permanent trasfer speeds than class 2. I have no idea what happens if you access many small files. usually the controllers dont reach that high transfer with small blocks.
I moved from a sandisk class 2 to a trancend class 6.
Boot is faster. Other than that, there is not a huge difference (same quadrant results)
The only difference in speed is seen when there is a lot of writing and reading done. Normal operation of android wont see much difference as it all loads into ram and runs from there. Playing games, etc won't see a noticeable speed boost with different class cards or even nand. Once the app is loaded, it's running from ram. Nand and higher class cards will help to boot quicker and with certain operations that require a lot of reading and writing to the os data file... I don't think most will notice any difference in speed.
Sent from my HTC HD2 using XDA App
Yeah, I borrowed my GFs class 6 4GB and tried it for a day.
No difference for me whatsoever.
If anything, I would say the class 2 gave me better stability.
(Had some force closes and shuch with the class6 ).
My .02
bouaroudj said:
I moved from a sandisk class 2 to a trancend class 6.
Boot is faster. Other than that, there is not a huge difference (same quadrant results)
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Click to collapse
That's exactly what I did. Unfortunately Transcend class 6 is slower...
EDIT: I was mistaken, 8Gb Sandisk was alsdo Class 6. See other post to see some testresults
don't know about you guys but changing the class from 2 to class 4 brought back SOD bad...extremely bad
kingston class 10 hdsd micro sd card
well as far as testing my class 2 16 gb sandisk hdsd micro sd card to my kingston card stated in the title i can say there is a very big differnce to me speed wise everything seems to transfer faster load faster and as far as videos and music i keep stored on there i must say comparing the two the class 10 is by far the best thats just my 2 cents
the access time make difference. the speed not .
Hello Everybody, I just want to share my experience regarding the micro sd card. Since i got my my TMOUS HD2, it came with the stock sandisk 16gb class 2 card. i have been using it since the day hd2 came out (late March 2010), i was using it mainly for my Android, but the card just not running stable, i keep getting SOD's on different android builds, lags and slow reading of the card. Well 2 weeks ago i decided to replace my Micro SD car to 16gb Class 10. I saw a HUGE improvement, the Android boots super fast, also not experiencing any lags nor SOD's. so my conclusion is the higher class of the card makes a HUGE difference, it makes your ANDROID runs smoother and stable on your HD2. I am very Happy
As you all notice i don't have many post here, but i just want to share my experience, Thanks to all the people who are involved in making our HD2 a one amazing phone, more power.
I don't think it'll make a difference from the speed of the card I believe its the allocation size of each card. I tried it on a 32kb allocation when formatting and it ran well. Right now I'm on 64 and seen slight improvements but the builds are still unstable or the same. Just slightly better performance. I used a class 10 card and it was okay but my experience has no credibility because I just jumped to a hd2 from a Nexus. Stupid I know but the screen trade off make its worth it because I do alot of reading and video watching. But we'll see how my expirements go.
I went from a class 2 to a class 10 and I didn't notice and difference
I went from a Sandisk Class 2 16gb to a Samsung Class 6 8gb and there was a noticeable difference.
hello
first thx to all dev's for developping some tweaks hacks roms for this androphone for the masses
so i' m planning buying a new sdcard ( mine sdhc is ko)
is it possible to know wich are the limitations ( data transfert) of the phone ( chipset) and wich class of sd should i buy : class 6 or maybe a good class10
is there any hardware bottleneck in what concern data rate transfert
thx
have fun
greets from Belgium
I would also like to know the same.
I am thinking about buying a class 10 card, since the one I am using currently only has class 4. When I am using app2sd+ currently, apps are started much slower then from internal memory (especially big ones like google maps).
Would a class 10 card even make a difference? Especially with app2sd+? Or is the phones hardware limited somewhere?
I would also like to know, would class 6 be enough or should i aim for class 10 ? I mean class 10 is also much more expensive.
I have a class 6 SD card and its great for me but this phone wont use it like others. I speedtested it on my phone with sd speedfix applied and it was three times slower than on SE X10 without sd speedfix.
Hi,
I use the cheapest class 10 card with 16 GB I found. Unfortunately it is not very quick in my galaxy 3. With SD tools I get a read speed of 4,6 MB/s and a write speed of 5,3 MB/s. So may be I was betrayed from seller.
I tried to increase speed by setting the read_ahead_KB with SD speed increase. I noticed that increasing the buffer did not enhance speed. But when I set buffer to 0 suddenly read speed increases to about 40 MB/s.
I set SD speed increase to change the value to zero at every startup and now I do not have any more problems with lagging with videos. So it seems not just to be an effect in the app SD tools.
CU
donny
Is somebody trying MICRO SD SDHC 4GB 4 GB SAMSUNG "PLUS" CLASS 6?
I have a PNY U3 Turbo Performance 64GB High Speed MicroSDXC Class 10 UHS-I, up to 90MB/sec Flash Card. It seems to get slower with time. I mean it is literally taking me like 60 seconds to delete a few pictures. The card is formatted to portable storage. I only store music and photos on it. Reformatting offered no improvement. It is borderline unusable.
So, I benchmarked and found that my read speed is about 59 mb per sec and my write speed is 4.4 mb per sec. I can live with the read speed but the write speed is horrible. What gives?
How many pictures are you talking about, and how large are they?
128KB clusters?
I found trying to use 4K clusters in exfat was resulting in the same slowness. Reformatted to 128KB clusters and it flys (~20MB/s write ~70MB/read). Sandisk ultra plus 64GB.
I have this issue as well I have one of the fast Samsung cards. First few months worked great super fast but now takes a while to carry over a gig of pics and music. I also notice lag in loading and delteing photos through the phone
These are normal pics 5-6 MB. There has to be something wrong.
Irieone said:
These are normal pics 5-6 MB. There has to be something wrong.
Click to expand...
Click to collapse
If you find any info/solution let us know.
Im thinking about running it through one of the tests that show the read/write speed, if its not up to par on that I will contact samsung see if its covered under their warranty.
Why not opt for a 128GB sd card? My Moto X Pure will be here Thursday. I have a 64GB in my old phone but I may get 128.
Has the OP tried backing up their data and reformatting the card?
gpz1100 said:
Has the OP tried backing up their data and reformatting the card?
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Click to collapse
Yes, I have tried this a few times and it did not help. The write speed of this particular card is somewhere between 5 and 9 mb/sec. I have used multiple benchmarking tools that all confirm the same thing. The sad thing, if you drill down into the specifications for a lot of these new sd cards there is no mention of write- speeds. I asked a question similar to my OP on Reddit and had somebody with the same card echo my issue. Terrible write speeds. I am not in the mood to buy another card with great specs only to find it performs poorly in my phone? There is still a part of me that thinks it's hardware or software related and specific to the phone. I can't quite believe that something advertised as "turbo", UHS-1, Class 10, and 90 mb/sec has an actual write speed of 5 mb/sec. It seems criminal.
^^See my post #3. I've found this card to have very good write speeds on the phone of ~14-16 MB/s, reads around 40-50. On the pc through a usb 3 card reader I can write at the speeds posted above.
But yes, unless you drill down, the marketing and advertising doesn't list write speeds. I can see why. It all depends where you'll be using it. I'll be lucky to see sustained 10MB/s read through my dash cam (not sure what the write speed even is) even through the card is capable of 40MB/s +.
I should say, using the moto x, through MTP, I've seen read speeds upwards of 35-40MB/s, write speeds of about 7-10MB. The card is faster through twrp, backup stats indicate ~14-16MB/s.
http://forum.xda-developers.com/moto-x-style/general/micro-sd-speed-chart-t3196020