http://forum.xda-developers.com/showthread.php?p=6973962#post6973962
^inspired by that HD2 thread... i bought a new trascent microSD class 6 card and copied all my sandisk class 2 card's content over (yes 14GB, basically almost full) and the class 6 just kills the class 2 performance.
i mean... it's not like going to a NEW phone fast, but it's noticeably faster when accessing in terms of loading/saving them! pretty unbelievable!
anyway, just wanted to share it if you guys are still on Hermes like me. besides you can keep carrying it forward to newer devices that support class 6 or 10 microSD cards it's pretty good until SDXC becomes cheaper and more common place.
Yeah, that's quite logical... I mean, the Class 2 performance is equal to 16mbps of transfer speeds (around 2 MB/s) and Class 6 is equal to some 48mbps (6 MB/s). That's three times faster. My microSDHC 8GB is also Class 6. Is it possible to use a Class 10 memory card with Hermes?
well i dunno how this works really. by its virtue having a SDHC/SD capable standard card readers shouldn't it read ALL the classes and perform to that class?
r34c7 said:
Yeah, that's quite logical... I mean, the Class 2 performance is equal to 16mbps of transfer speeds (around 2 MB/s) and Class 6 is equal to some 48mbps (6 MB/s). That's three times faster. My microSDHC 8GB is also Class 6. Is it possible to use a Class 10 memory card with Hermes?
Click to expand...
Click to collapse
I just got myself a Class 6 16GB recently; and yes, it's insanely fast.
Related
My Hero came with a 2GIG card ( I'm not sure what class ) - it was fine but too small.
After a bit of research, I found that the higher the class the faster the card ( ie class 6 is a faster card than class 2 etc ).
I formatted the new card in the phone.
So I copied all my old card files to my computer, then copied them over to the new card.
Put in the new 8GIG card in my phone and it mounted no problem and I had all my music and photos.
BUT -
As I can see, it seems to be a lot slower than my old card. If I go to my photo album, it will load as a preveiw grid. This used to happen pretty quickly, but on the new card, the grid squares are grey, and then start to load up with the photo images.
Any ideas why and ways to fix this?
cheers all
did you buy the new card from an auction site? I hate to suggest it, but there are a lot of fakes around...
J-Zeus said:
After a bit of research, I found that the higher the class the faster the card ( ie class 6 is a faster card than class 2 etc ).
Click to expand...
Click to collapse
Errhhh, this is actually incorrect.
All the class means is that your card is guaranteed to write at certain minimum speeds.
Class 2 - 2mb/s
Class 4 - 4mb/s
Class 6 - 6mb/s
So, if you buy a genuine class 6 card, you are guaranteed that it will write at 6mb/s but that doesn't preclude it from operating faster than this minimum.
A good quality class 4 will often write at 11 or 12 mb/s, more than double the class 6 minimum. You can expect that a good quality class 2 or class 4 will often outperform the class 6 minimum, whereas as poor quality class 6 will perform far closer to its minimum requirement.
When buying an SD card, don't just look at the class - look for independent reviews. For example, http://www.davidgilson.co.uk/2008/12/follow-up-another-micro-sdhc-card/, which shows a class 2 card running at speeds well in excess of class 6 minimums.
Regards,
Dave
This is another case of the Hero having problems with certain SDHC cards.
The thumbnails for the Album are not being created and stored for some reason, and i can almost guarantee this is what's happening to you.
I've had to go back to using my old 2gb for now, as my 8gb Sandisk Mobile Ultra Class 6 was performing poorly when viewing my photo albums. We're still trying to work out why the Hero is not liking these newer cards...
I'm watching with interest....
foxmeister said:
When buying an SD card, don't just look at the class - look for independent reviews. For example, http://www.davidgilson.co.uk/2008/12/follow-up-another-micro-sdhc-card/, which shows a class 2 card running at speeds well in excess of class 6 minimums.
Regards,
Dave
Click to expand...
Click to collapse
How sad, I should have noticed this before. Having read your article, I immediately test my two SDHC cards. The finding changes my fundamental view on class numbers:
Transcend Micro SDHC, 8G, Class 6: 9.1MB
Sandisk Micro SDHC, 8G, Class 4: 14.9MB
Note 1: The Transcend card is from someone who sold me a second hand Google G1.
Note 2: The Sandisk card came with a tiny red reader (Like this), bought in Hong Kong
The speed test is carried out using the Sandisk reader in conjuction with the card benchmark software called "ATTO". To my surprise, the read/write speed of this tiny reader is, amazingly, faster than the internal card reader.
That would be this issue.
Still no real solution yet, but its not an exclusive problem.
My gf was nice enough to get me a 4gig class 2 sd card...I was wondering if there were any downsides to me having this and if any could then be fixed withough having to get a class 6 which from my searches and reading in the forums if a really good investment.
your class 2 card will just not be as fast, but it still usable.
holmes901 said:
My gf was nice enough to get me a 4gig class 2 sd card...I was wondering if there were any downsides to me having this and if any could then be fixed withough having to get a class 6 which from my searches and reading in the forums if a really good investment.
Click to expand...
Click to collapse
downsides is..class 2 wont run roms as fast as class 6. but still pretty much usable
4gig class 6 on newegg.com is now about 14 after shipping
sd cards and class ratings
The problem with sd cards, are that the rated class is often way off. They often perform much better.
For example, I have two kingston class 5 cards, that have read speeds at 12.5MB/sec, and one Sandisk class 4 with read speeds at >16MB/sec.
As comparison, I have a no-name class 6 that barely reads at 8MB/sec.
All three brand name cards also writes faster than the no name class 6. So why they are rated class 4 and not 6 is a mystery to me.
Ideally, we should have a thread where people posted the read/write speed of their sd crads, and included a link to where you bought it from. Mymemory.co.uk is a good place to get them from, in my expoerience. Does anyone know of online shops shipping worldwide that actually states the r/w speed of the cards? Or better yet, a table/wiki with this information?
To answer OPs question though: Class 2 will probaby be slow with Hero-roms or apps2sd. But you cn always test it and see how well it performs. I imagine reading speed is most important.
naguz said:
The problem with sd cards, are that the rated class is often way off. They often perform much better.
For example, I have two kingston class 5 cards, that have read speeds at 12.5MB/sec, and one Sandisk class 4 with read speeds at >16MB/sec.
As comparison, I have a no-name class 6 that barely reads at 8MB/sec.
All three brand name cards also writes faster than the no name class 6. So why they are rated class 4 and not 6 is a mystery to me.
Ideally, we should have a thread where people posted the read/write speed of their sd crads, and included a link to where you bought it from. Mymemory.co.uk is a good place to get them from, in my expoerience. Does anyone know of online shops shipping worldwide that actually states the r/w speed of the cards? Or better yet, a table/wiki with this information?
To answer OPs question though: Class 2 will probaby be slow with Hero-roms or apps2sd. But you cn always test it and see how well it performs. I imagine reading speed is most important.
Click to expand...
Click to collapse
Sandisks are on average the fastest of the flash memory cards... and i believe you pay a slight premium for it? i have one, but from amazon for like $30 so idk
I currently run an 8 gig class 4 card by PNY with a one gig partition for my apps. It's been slowing down lately (because I'm using nearly half of it). Gonna get my wife to get me a 16 gig class 6 card next month.
I had a classless 2 gb card and it runs just the same as this sandisk 8gb class 6.
I don't see what everyone talks about. I tried them both on cm 4.0.4 and now with this new CM and I don't see a significant difference.
I'm running like 7 widgets all over the 5 pages.
Maybe I just can't tell...
Ssantos6981 said:
I had a classless 2 gb card and it runs just the same as this sandisk 8gb class 6.
I don't see what everyone talks about. I tried them both on cm 4.0.4 and now with this new CM and I don't see a significant difference.
I'm running like 7 widgets all over the 5 pages.
Maybe I just can't tell...
Click to expand...
Click to collapse
yeah it seems that the classless cards, although slower on file transfers, are not maximizing bandwidth with swap and stuff so looks like it's even... and only SDHCs have a class looks like. my stock G1 card worked fine but crashed a few times with apps2sd... running hero is probably why though.
The class refers to the minimum read/write speed necessary for continuous streaming of information, not the maximum read/write speed (more important for digital cameras and camcorders than our devices). The common misconception is that a class 6 card is faster than a class 2 card. You have to be aware of the MAXIMUM read/write speed which will tell you which performs better: ie- you may have a class 2 with a higher read/write speed than the class 6 which would make the class 2 faster.
ofsinreno said:
The class refers to the minimum read/write speed necessary for continuous streaming of information, not the maximum read/write speed (more important for digital cameras and camcorders than our devices). The common misconception is that a class 6 card is faster than a class 2 card. You have to be aware of the MAXIMUM read/write speed which will tell you which performs better: ie- you may have a class 2 with a higher read/write speed than the class 6 which would make the class 2 faster.
Click to expand...
Click to collapse
that usually happens when people get a lower-quality/class Class 6 card thinking they're all fast... fact is, Sandisk makes the Class 6 Mobile Ultras which get 16mb/s average and maxxed at 24mb/s once for me while some crappy Class 6's might just get the bare minimum for Class 6: 6 mb/s
I have been following xda-developers since I unlocked my first at&t tilt, and people are always making that mistake! Just look up any HERO ROM and they will require "Class 6 micro-SD Card"! The fact is the class is not a potential speed rating, whether it is 2 or 6 or even 10! The class # refers to the lower limit of the device that is using the card, not the capability of the card. For example, if your device is capable of writing at 12Mb/s then you can use any class card rated at 12Mb/s regardless of whether it is a class 2 or class 6 and neither will be faster. Conversely if your device is only capable of writing at 4Mb/s then you cannot use a calss 6 card because the class 6 card requires a device to write continuously at lease 6Mb/s. Most people think that a class 6 card is labeled "class 6" because it is guaranteed to read/write at least 6Mb/s and a class 2 is labeled "class 2" because it is guaranteed to write at least 2Mb/s; but that is not true. The speed rating is not the same as the class rating. They have very little to do with one another.
I found this on amazon, pretty much the cheapest and highest i can find on the class category, right now i have a 8GB Class 6 but im running out of space because of the HD videos im recording, will i noticed any significant difference in performance on this phone? and its Kingston and trust them
http://www.amazon.com/Professional-...2?ie=UTF8&s=electronics&qid=1292972644&sr=1-2
anyone got feedback??
I had a 8GB class 2 and the phone needed alone around 3 seconds till the screen went balck and the cam started after pressing the camera key and 1 or 2 seconds till the cam was on.
Now I have a 16GB class 4 and the cam starts immediately (around 0,5 sec after pressing the camera key) and needs around 1-2 seconds till the cam is started.
I think Mediascape etc is also faster with the class 4 than with the class 2.
I don't want to have a class 2 card in my phone anymore, the whole phone feels faster with an class 4 card.
So I'd say you'll feel a difference. If you have the money, go for a 16GB class 4.
it comes with a 16gb class 2
get a class 4 or higher.
preferably a class 6
I read that the phone can't use the performance plus of a class 6 card compared to a class 4 one, so a class 4 should be the best choice.
I'm using 16G class 10 that i bought from Amazon
it work with my X10 and never had any problem until today.
effect: Camera and music are faster then the 8gb c4.
forgot to post the name of my 16gb c10 micro sd brand: kingmax
Good, bought the same card yesterday, hopefully it will he shipped fast. Changed from a 16gb class4 to class10 because with the latest firmware the X10 can read & write with class10 speed...
I'm actually upgrading from a Class2 2GB to a Class 6 8GB, hoping the system overall runs faster so I cant vouch for class2/6 change yet, although I'd question the "cheapest one" for class 2 I found this
remove the space between the "w" since i cant post links yet
ww w.amazon.com/SanDisk-microSDHC-Memory-SDSDQ-016G-Packaging/dp/B001L1H0SC/ref=sr_1_88?s=electronics&ie=UTF8&qid=1300394566&sr=1-88
Did you guys try getting readings on SD Tools for read/write?
On the original SD Class 2 I got write 1.6mb/s and read 60 mb/s (WTF?)
and on a class 10 which I bought off ebay I got 13mb/s and 17 mb/s !
Sorry if I'm not relevant but how do I find on which class my card is on ?
Sent from my X10i using XDA App
Use the app "SD Card Speed Test", it will show you the class.
Sent from my X10i using XDA Premium App
The best possible card is the Lexar microSDHC 32Gb Class 10, but it comes with a price of ~100Euro.
For 16Gb, check if you can find a Class 10 from Lexar, Kingston, Sandisk as these are reputable producers.
Or if the price is right, you can check out a Class 6 or Class 10 made by TeamGroup or A-Data, these are 2nd tier producers.
In the end, remember that not always the fact that is written on the package makes it true.
Darth Glacious said:
The best possible card is the Lexar microSDHC 32Gb Class 10, but it comes with a price of ~100Euro.
For 16Gb, check if you can find a Class 10 from Lexar, Kingston, Sandisk as these are reputable producers.
Or if the price is right, you can check out a Class 6 or Class 10 made by TeamGroup or A-Data, these are 2nd tier producers.
In the end, remember that not always the fact that is written on the package makes it true.
Click to expand...
Click to collapse
I use this card and "bang for buck" its the best out there. Never had a problem and read/writes are exactly as stated. In fact, after installing a custom rom, changing to .58 baseband and then adding this card, its made me fall in love with this phone for the first time since I bought it and iv'e had mine since launch (UK). Excellent sdhc card, well worth the money, if like me, you use your phone as an entertainment device.
Class 6 Plus Camera Mod
A while back I stumbled on a camera mod for Build.Prop.. if you get a faster card.. you can adjust your FPS of cam.. I bought an 8Gb class 6 and with the mod it works quite well. So there is ways to improve your software if you want to upgrade your storage.. I got mine at Target with a reader for $20.00. Sure beats the stock 2Gb class 2
http://forum.xda-developers.com/showthread.php?t=922657
Class 10
I'm in the business of looking for one myself as well. From what i have been told your best bet is a class 6 and up. I am looking for a class 10 myself just because the read and right speed are the fastest. Taking pictures, recording video, etc.. always try with class 6 and up for sure.
I have a Sandisk 16GB Class 4 card and just tested the speed:
write: 5.5 mbps
read: 10.9 mbps
Never had any problems with video recording but I can imagine the difference between this one and a class 6 is noticable.
Is a class 2 sandisk microsd card fast enough to store/view some media and such on it and have decent use with the Atrix?
I have a class 4, 4gb in right now, but I can get a good deal on a class 2 8gb card
This may help:
http://forum.xda-developers.com/showpost.php?p=13941287&postcount=9
Wond3r said:
Is a class 2 sandisk microsd card fast enough to store/view some media and such on it and have decent use with the Atrix?
I have a class 4, 4gb in right now, but I can get a good deal on a class 2 8gb card
Click to expand...
Click to collapse
that all depends on your usage, some people might see it as too slow, but again it depends on how you feel about the phone read write slowdowns
I use a 16gb polaroid class 2 card i bought for $13.. no problem at all. Although some people might disagree.
I have patriot 16gb class 10, I paid it at 35 euros, speed is really fast 10 - 16mb/s
Hope it can handle 32GB well without any issues.
A normal class 10 is enough? Any specific suggestions?
Thanks in adv
kwyx1 said:
Hope it can handle 32GB well without any issues.
A normal class 10 is enough? Any specific suggestions?
Thanks in adv
Click to expand...
Click to collapse
Some time ago class 4 and class 6 cards were faster when dealing with small files. But it seems that nowadays class 10 cards are superior.
Class 6 slightly slower class 10, the copy speed also depends on the cluster size (I mean small) class 10 always faster class 6.
In Optimus G only MTP connection because of files are transferred slowly by themselves and there are errors, so that no matter what class 6 or 10
bgkone said:
Class 6 slightly slower class 10, the copy speed also depends on the cluster size (I mean small) class 10 always faster class 6.
In Optimus G only MTP connection because of files are transferred slowly by themselves and there are errors, so that no matter what class 6 or 10
Click to expand...
Click to collapse
Transfer speed from PC to Card is fine.
But its interaction with the phone should be fast.
class 10 means 10MBPS, but there are sdhc and sdxc cards which support 20+ and 50 MBPS write speeds respectively if your phone supports such speeds..So my intent was to ask that.
kwyx1 said:
Transfer speed from PC to Card is fine.
But its interaction with the phone should be fast.
class 10 means 10MBPS, but there are sdhc and sdxc cards which support 20+ and 50 MBPS write speeds respectively if your phone supports such speeds..So my intent was to ask that.
Click to expand...
Click to collapse
I use a class 10 and even though I don't notice any speed different, it is sufficient enough. Only use class 10 if you use a camera alot since burst photos can be saved easily.
AND... don't buy SD cards from eBay if they are really cheap, most often they are fake.
Gysper said:
I use a class 10 and even though I don't notice any speed different, it is sufficient enough. Only use class 10 if you use a camera alot since burst photos can be saved easily.
AND... don't buy SD cards from eBay if they are really cheap, most often they are fake.
Click to expand...
Click to collapse
SanDisk 128GB card works in e970. Mine came in today, using it right now.
Sent from my LG Optimus G using XDA Premium 4 mobile app
I use a SanDisk ultra 16 GB microSDHC card and copying speeds for large files (>100 mb) is around 24-25 MBps.
Go for 32GB
Go for 32GB