Hi Community,
Does the class of a SD card really matters?
Info:
Using HTC Magic or see my sig
Using CyanogenMod 5.0.8.
Using Apps2SD
Using a 8GB ScanDisk class 2
and this morning when I try to play a game which is loaded onto the SD, not internally, my phone hanged, and followed by very sluggish response.
So I rebooted my phone, and when it was done, my SD card got corrupted. I tried to reformat and it won't. I used BOTH my phone's and computers/laptop's reformat function to do it and it won't work.
Thus, I guess I am left with a dead SD card.
Community, please tell me, does a class of SD card really matter for Apps2SD? I mean I did my research and their are 2 sides to it, some claims that ScanDisk cards are good enough, others suggested the need for class 6... Which is oh-my-god-so-expensive.
I thank anyone for the upcoming response.
Cheers,
JokerAce
bump!
10 char
As with all things computer, faster is better. I'm using a SanDisk 8G class 2 myself. Yes, apps 2 SD on a class 2. It's working for now, but I'm pretty sure that it's because I have a CDMA Hero. I haven't had many issues, other than my photos taking forever to load and one time that it locked up and I had to pull the battery. I'm looking at getting a class 6 8G real soon. I've seen them in the $20-25 range on eBay.
guitardoc64 said:
As with all things computer, faster is better. I'm using a SanDisk 8G class 2 myself. Yes, apps 2 SD on a class 2. It's working for now, but I'm pretty sure that it's because I have a CDMA Hero. I haven't had many issues, other than my photos taking forever to load and one time that it locked up and I had to pull the battery. I'm looking at getting a class 6 8G real soon. I've seen them in the $20-25 range on eBay.
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Click to collapse
I guess we are better getting a higher class of sdcards. Thanks.
Yes we are. Class 2 works, but it's a bit slow for today's devices. I really thoght I was doing good with an 8 G, but the speed of R/W is a factor, especially with apps2SD.
From Wikipedia: http://en.wikipedia.org/wiki/Secure_Digital
Speed Class Rating
The Speed Class Rating is the official unit of speed measurement for SD Cards, defined by the SD Association. It is equal to 1 MB/s (8 Mbit/s), and it measures the minimum sustained write speeds for a fragmented state
The following are the ratings of some currently available cards:
* Class 2: 2 MB/s
* Class 4: 4 MB/s
* Class 6: 6 MB/s
* Class 10: 10 MB/s
So theory stands - the faster the better (and more expensive!)
Bodisson said:
The following are the ratings of some currently available cards:
* Class 2: 2 MB/s
* Class 4: 4 MB/s
* Class 6: 6 MB/s
* Class 10: 10 MB/s
So theory stands - the faster the better (and more expensive!)
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Click to collapse
Inasmuch as a high speed card is better, at what speed are phones usually pulling/pushing data around at the moment?
I'm currently in the market for a 16/32Gb card for my SGS and this has made me curious on whether or not to consider Class 4+, as somewhere along the line the speed of the card might be irrelevant and the depth of my pocket will make its presence known.
It has been claimed (I think over on the CM forums) that the G1 is incapable of reaching speeds higher than Class 6.
That would be consistent with the state of the art when it was released.
In fact, I would expect that the newest round of phones coming out right now are the first that can handle Class 10. The cards have just been hitting the market lately.
GinoAMelone said:
It has been claimed (I think over on the CM forums) that the G1 is incapable of reaching speeds higher than Class 6.
That would be consistent with the state of the art when it was released.
In fact, I would expect that the newest round of phones coming out right now are the first that can handle Class 10. The cards have just been hitting the market lately.
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Fantastic, thanks Gino. Seems that Verkkokauppa is a good source here in Finland (just getting used to living here....UK ex-pat).
http-www-verkkokauppa-com/main.php?cat1=0&brand=&query=SDC10/16GBSP&path=haku&search=1
A 16GB class 10 card for €104 is a big tag, but directly in line with speed....can find a 16GB class 2 in supermarkets for a fifth of that or thereabouts ;-)
Must shop around. I'm sure that a microSD card isn't onerous on shipping costs.
Related
Hello,
Now that Froyo more or less came out and apps will start having Apps2SD function, it's time for a MicroSD upgrade.
What I want is on-phone performance - that running heavy 3D games on SD would perform as smoothly as if it was on internal memory. Is there a general consensus on what brand/class would suffice, and what is overkill? I have no concern over data cable transfer speed, as I'm pretty sure the phone will limit the speed much before the SD card does.
I'm looking at this Sandisk 16gb MicroSDHC Class 2 for $35 after shipping:
http://www.amazon.com/SanDisk-Flash...ref=sr_1_1?ie=UTF8&s=pc&qid=1275145563&sr=1-1
Anyone know if this would suffice?
Past threads have always went on tangents about good brand vs knock offs, how class is important vs. a marketing ploy, etc etc. Has a general consensus been reached in the xda community over what is sufficient but not overkill for onboard performance? Perhaps people who have already ran App2SD and use games and videos a lot have some input.
Thanks
I have a Top Ram 16 Gig class 6 and I think I paid about the same as you looking to pay for a class2. I also have a class2 that I have had for over a year. I used to use it in my blackberry. It still works and it is made by one of the cheap manufacturers.
Argh, I'm suffering from chronic SD corruption. So I'm in the market for a new chip. Think I'll spring for a 32gb this time. What's the latest on one that's both compatible and fast? And cheap too, that would be nice, links appreciated.
Considering that due to the amount of RAM the N1 has your main apps will be loaded already so card speed is not a significant factor, unless you use lots of different apps on a regular basis.
A faster card is beneficial mostly for the time i takes when I am loading up new music and possibly vids if you use it for that
This is the first 32gb MicroSD card I have seen "In Stock" Pretty expensive for a class 2 though.
http://www.buy.com/prod/sandisk-sds...crosdhc-32-gb-retail/q/loc/101/215191110.html
!!
Im not sure the nexus 1 can handle a 32GB card , wow that's a lot lol, but you can get one for like $30 on ebay... http://bit.ly/9J7u2S
You can get a 16gb class 10 for about $90.00.
http://www.amazon.com/dp/B0036V5DGG...e=asn&creative=380341&creativeASIN=B0036V5DGG
frankzua77 said:
Im not sure the nexus 1 can handle a 32GB card , wow that's a lot lol, but you can get one for like $30 on ebay... http://bit.ly/9J7u2S
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Micro SDHC is a standard that supports up to 32gb. Of course it can handle it just fine.
I run a 16gb Class 6 in mine, works fine
bewar ebay, there a lot of folks selling fake cards. They even read as what they were sold as but then fill up mighty quick............
The class is not needed I don't think
I have a class six and have been running games on it from sd for 3 months cant tell a bit of difference. I run linpack from sd and it works fine too!
the only real 32gb card is found here., http://www.sandisk.com/products/mobile-memory-products/sandisk-microsdhc
frankzua77 said:
Im not sure the nexus 1 can handle a 32GB card , wow that's a lot lol, but you can get one for like $30 on ebay... http://bit.ly/9J7u2S
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no f-ing way that is real for $30
GldRush98 said:
Micro SDHC is a standard that supports up to 32gb. Of course it can handle it just fine.
I run a 16gb Class 6 in mine, works fine
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I'm running a 32gb Sandisk Class 2 in my Nexus as of last Friday. No problems (apart from a looooong time to refresh the media library after resyncing my music).
You can not get a genuine 32GB Micro SD card for US$40.
A good class 2 card (2MB/s) will offer you the same performance as any other class in your phone.
The limitation is not the speed of the card.
Buy a brand name card with the capacity you require and be done with the complexity.
djmcnz said:
You can not get a genuine 32GB Micro SD card for US$40.
A good class 2 card (2MB/s) will offer you the same performance as any other class in your phone.
The limitation is not the speed of the card.
Buy a brand name card with the capacity you require and be done with the complexity.
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Click to collapse
I don't know too much about transfer rates but basically what you're saying is that a a brand name class 2 card will be just as good as say a class 6? I'm in the market for a new SD card as well, and the class 6 cards are much more expensive. I'm wondering if they're worth it.
jasrups said:
I don't know too much about transfer rates but basically what you're saying is that a a brand name class 2 card will be just as good as say a class 6? I'm in the market for a new SD card as well, and the class 6 cards are much more expensive. I'm wondering if they're worth it.
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No, in a phone they're not worth it at all and people who say so are either selling snake oil or are embarrassed because they've paid for one and are foolish for doing so.
The best I can do just at the moment is this:
wikipedia said:
In applications that require sustained write throughput, such as video recording, the device may not perform satisfactorily if the SD card's class rating falls below a particular speed. For example, a camcorder that is designed to record to class 6 media may suffer dropouts or corrupted video on slower media.
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The Nexus, like probably every other phone out there, is a) not typically used for high rate sustained write activities and b) is designed to write to class 2 media to begin with.
If you have a large, highly fragmented sd card higher speeds will help. This of course is easy to avoid in the first place.
Get a higher capacity, class 2, brand name card for the same money and you're away laughing.
NB - If somebody waves a magic wand and all of a sudden the Nexus can record video at 1080p at a high enough bitrate then perhaps my advice would be invalidated... but don't hold your breath for that to happen...
djmcnz said:
No, in a phone they're not worth it at all and people who say so are either selling snake oil or are embarrassed because they've paid for one and are foolish for doing so.
The best I can do just at the moment is this:
The Nexus, like probably every other phone out there, is a) not typically used for high rate sustained write activities and b) is designed to write to class 2 media to begin with.
If you have a large, highly fragmented sd card higher speeds will help. This of course is easy to avoid in the first place.
Get a higher capacity, class 2, brand name card for the same money and you're away laughing.
NB - If somebody waves a magic want and all of a sudden the Nexus can record video at 1080p at a high enough bitrate then perhaps my advice would be invalidated... but don't hold your breath for that to happen...
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Thanks for the info man! I was obviously misinformed, you just saved me a bunch of money
so just curious. now that CM 5.0.8 comes with 720p recording, would a class 2 still suffice?
I am also searching the web recently to look for a cost-effective high vol microSD. My finding is: don't 100% trust the "class" specified by mfr. I used ATTO Disk Benchmark to test two 8G microSD that I have: Transcend 8G Class 6 and Sandisk 8G Class 4.
<Transcend Class6> Write: 6-10MB/s Read: 16MB/s
<Sandisk Class 4> Write: 14MB/s Read: 20MB/s
From similar test results on the web, it seems that Sandisk uses to under-state the performance of their card. Finally I get a Sandisk 16G Class 2 for my N1, and here is the test result with the same setting:
<Sandisk 16G Class2> Write: 7MB/s Read: 20MB/s
Although Sandisk only specifies it as class 2, it actually performs like a class 6.
I suspect the importance of the speed of the SD card too, coz I think the write speed into ROM, should be way slower than 6-7MB/s (correct me if I am wrong ^_^)... If the speed of v2.1 w/o app2sd is acceptable to you, then v2.2 with 6-7M write speed card should be logically fine with you.
fshek said:
I am also searching the web recently to look for a cost-effective high vol microSD. My finding is: don't 100% trust the "class" specified by mfr. I used ATTO Disk Benchmark to test two 8G microSD that I have: Transcend 8G Class 6 and Sandisk 8G Class 4.
<Transcend Class6> Write: 6-10MB/s Read: 16MB/s
<Sandisk Class 4> Write: 14MB/s Read: 20MB/s
From similar test results on the web, it seems that Sandisk uses to under-state the performance of their card. Finally I get a Sandisk 16G Class 2 for my N1, and here is the test result with the same setting:
<Sandisk 16G Class2> Write: 7MB/s Read: 20MB/s
Although Sandisk only specifies it as class 2, it actually performs like a class 6.
I suspect the importance of the speed of the SD card too, coz I think the write speed into ROM, should be way slower than 6-7MB/s (correct me if I am wrong ^_^)...
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huh that's interesting. i just might pick that up from amazon then..
I Dont think fragmentation makes any difference to write speed, these are not mechanical devices like hard disks.
Also defragging is pointless and shortens the life of the card by increasing the number of writes.
I'm thinking about buying a 16gb microsd class 6 card. Will the 6 really make a difference from a class 4 on the eris though? Once they get that fast can the eris really keep up or will it just be excess speed for nothing? Also, I'm guessing a 32gb c6 is out of the question? As far as brands go, are there any that I have to avoid. I'm looking to buy a cheap one from one of those ebay sellers in china with the free shipping. Is this a bad idea? Will it not work with the eris? Thanks.
A lot of money for not a ton of improvement. If you use apps2sd it'll matter more but not hugely.
I use a class 4 8gb Kingston with no problems at all, didn't see the point in buying an exspensive class 6. That and a2sd works great on a class 4
This is a cheap yet quick class 6: http://www.newegg.com/Product/Product.aspx?Item=N82E16820208453
as i explain here all of them are same
http://forum.xda-developers.com/showthread.php?p=10853883#post10853883
i9000blackrain said:
as i explain here all of them are same
http://forum.xda-developers.com/showthread.php?p=10853883#post10853883
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i9000blackrain said:
that is like the blue tooth version v2 and v3
only name are different and here class and name are different in real there is no different
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Two worthless posts, dude. You didn't explain, you only gave an opinion, but I'm afraid you're wrong and your uninformative posts didn't warrant reviving two dead threads just to get your post count up.
There are most definitely speed differences between different classes of SD cards.
Next time, think before you post.
I've used 3 cards. The SD card that came with the phone (8GB Class ?), a SanDisk 8GB Class 2 card (from Best Buy for ~$40), and an A-Data 8GB Class 6 card (from Frys for ~$25). The Class 6 card is MUCH quicker in day to day use. Launching most apps (on SD card) is noticeably quicker than the system apps stored on the phone for example. Comparing card to card is night and day as well! The original card was similar in speed to the SanDisk one, but the A-Data card seems about 2-3x faster. Viewing images in the gallery is also much quicker with no lag of loading a picture of relatively high quality.
Summary: There is a noticeable difference! A friend has a Class 4 card and it feels slower but seems to be closer to the Class 6 end than it is to Class 2. That isn't to say it's slow/bad, but it isn't as fast, especially in gallery.
(all on Fresh Installs of CELB Froyo 4.3)
Fact is.... it makes a difference depending on what you do. here are my tests after buying a class 10 16GB from amazon:
KingMax 16GB class 10:
Writing speed: 13.8 MByte/s
Reading speed: 16.6 MByte/s
SanDisk 8GB Class 2:
Writing speed: 6.56 MByte/s
Reading speed: 17.4 MByte/s
I used the following program to test directly from the SD card slot on my laptop, not from the eris:
Program on PC: H2testw.
my camera app takes pictures a tad faster, I assume due to the write speed to the SD card. Other than that I dont use the SD card for much else besides storing and looking photos and playing music. I dont use app2sd.
lesismore1 said:
I've used 3 cards. The SD card that came with the phone (8GB Class ?), a SanDisk 8GB Class 2 card (from Best Buy for ~$40), and an A-Data 8GB Class 6 card (from Frys for ~$25). The Class 6 card is MUCH quicker in day to day use. Launching most apps (on SD card) is noticeably quicker than the system apps stored on the phone for example. Comparing card to card is night and day as well! The original card was similar in speed to the SanDisk one, but the A-Data card seems about 2-3x faster. Viewing images in the gallery is also much quicker with no lag of loading a picture of relatively high quality.
Summary: There is a noticeable difference! A friend has a Class 4 card and it feels slower but seems to be closer to the Class 6 end than it is to Class 2. That isn't to say it's slow/bad, but it isn't as fast, especially in gallery.
(all on Fresh Installs of CELB Froyo 4.3)
Click to expand...
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wow this made me go ahead and wanting to buy the A-Data 8GB Class 6 SDcard
so you say ~$25? I just saw on newegg they were selling for $12.99 w/ free shipping
A-DATA Turbo 8GB Secure Digital High-Capacity (SDHC) Flash Card Model TurboSD SDHC 8G
would that be the correct model you have?
I got it at Fry's a couple of months ago so it may have dropped a bit.
And yes, it is.
Been looking around for which microsd card to replace my venue pro one with. definitely want a 32gb one. Pulled up a few, are a lot of people having problems with the class 4 cards? Should I stick with a class 2, even though the 4 is about the same price, or cheaper? Here are the few I found, all around $80. Price doesn't matter, just want the one that will work the best.
http://www.buy.com/prod/sandisk-sds...rd/q/sellerid/20451128/loc/101/219031154.html
http://www.amazon.com/SanDisk-MicroSDHC-SDSDQ-032G-A11M-Retail-Package/dp/B003OA8T92/ref=pd_cp_e_1
http://www.buy.com/prod/sandisk32-g...icrosdhc-1-card-pack/q/loc/101/217020006.html (same card as above)
http://www.amazon.com/gp/product/B004G60AD6/ref=olp_product_details?ie=UTF8&me=&seller=
I'm 100% sure someone had posted the 32GB MicroSD card S/N they use. I don't remember which post it was, it is somewhere in the Venue Pro General form.
I think class 6 should work. Max Miller at ZDNet has posted a blog about how he swapped a troublesome dvp's 8gb card with 32gb n the dvp is working like a charm after that. It has a video aswell.
Sent from my Venue Pro using Board Express
Whats the largest SD card Windows mobile 7 can handle, and if it's less than 128 will it be able to recognize "partitioned" SD cards?
I use a sandisk 32g class 2 and it works fine. Did find a lot of class 4 of same price but skipped as I only saw that class 2 works from posts online.
And from a random (not sure if reliable though) article online, it says WP7's file system depends on random I/O seek time (or alike) which is a different dimension from class, which gauge the continuous transfer speed.
kharnak said:
I use a sandisk 32g class 2 and it works fine. Did find a lot of class 4 of same price but skipped as I only saw that class 2 works from posts online.
And from a random (not sure if reliable though) article online, it says WP7's file system depends on random I/O seek time (or alike) which is a different dimension from class, which gauge the continuous transfer speed.
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Why would a slower class work better than a faster class of SD? Class ten is the fastest your able to buy.
If I can buy a class 10 32gb would it work?
http://www.newegg.ca/Product/Produc...61411-L06D&AID=10657534&PID=749547&SID=forums
I swapped my 8GB class 4 that came with the device to a 32 GB SanDisk class 4. I do notice slower write speeds - 720p video in particular seems to have a lag when capturing. Other than that, the phone is zippy fast.
I bought a Dell Venue Pro (normally hate Dell and don't give them the time of day) and from what i've been reading i'm going to be stuck with a class 2 or 4 (32gb) MicroSD card. And to narrow it down even further supposedly the ones that work best with these phones are sandisk.
So my questions are this. Will I actually be able to use a class 10 microsd card or is it a limitation of the physical phone. I mean windows is capable of 32gb and probably more.
If it isn't able to use class 10 right now will there be a firmware update for the phone that will allow it.
What would happen if i bought a kingston or patriot over sandisk (as i've always considered them the bottom of the pile)
I've been using a 32gb sandisk (class 2) for a couple days now and it's awesome. Despite being class 2, it's way faster than the crappy class 4 that came with the phone.
Random r/w speed is the most important thing to worry about with WP7 devices. Class rating does not say anything at all about random r/w speed, just about the maximum throughput. In fact, there is often a NEGATIVE correlation between class rating and random r/w speed - the higher the class, the lower random r/w.
So that's why class 2, 4, or 6 cards seem to be the best.
so could anyone give me a link of the best 32 gb sd card I can use for my DVP that would be awesome.
the one that came with my phone is starting to fail (constantly getting the black screen with memory card problem and asking me to change cards and reset)
another question
let's say something happens with my phone and I need to send it back for warranty repair, could I possibly switch out the sd card back to the original one, reset and be ok?
So does this phone have a SD card that is expandable? I just got the phone a week ago and thought it was built in and couldn't be changed.
I have the stock 8G card in my Inspire, but want a 16G card so I can move apps (and other data) over. Is there any real difference from one 'class' of card to the other? what would you guys recommend?
BillTheCat said:
I have the stock 8G card in my Inspire, but want a 16G card so I can move apps (and other data) over. Is there any real difference from one 'class' of card to the other? what would you guys recommend?
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Get the san disk 16gb class 10. It will be really fast with transfers.
Sent from my Inspire 4G using XDA Premium App
klquicksall said:
Get the san disk 16gb class 10. It will be really fast with transfers.
Sent from my Inspire 4G using XDA Premium App
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I read that some cards were more accurate with their transfer claims than others. Can't remember the brand of card but one was recommended as being closer to the spec than the others. Also remember reading something somewhere that suggested a Class 10 card wasn't desirable and not necessarily faster because of how it worked, and that a Class 6 would do better for read/write and battery life. Your thoughts?
not really sure if I would spend the extra cash on a class 10 16b over a slower card for use in a phone. class 10 are superior for video, especially hd, like with a digital camera.
now, if the price is not much more I would go for class 10 but that is because I have found that once you replace your device, you may use your old card in a new device that now needs a faster card.
from sd association:
Class 2 : H.264 video recording, MPEG-4, MPEG-2 video recording
Class 4: MEPG-2 (HDTV) video recording, DSC consecutive shooting
Class 6: Mega-pixel DSC consecutive shooting, professional video camera
Class 10: Full HD video recording, HD still consecutive shooting
I do not agree with all of those uses but class 6 should be fine for your phone, even class 4 may be. plenty of info on the web if you want to check it out more. Again, if price is not an issue or the price difference is minimal go for a faster card. also, do not buy from ebay as there are a ton of fake cards on the site.
edit:
this was a good deal. just expired, but a similar one may surface :0
http://slickdeals.net/forums/showthread.php?sduid=1019384&t=2794331
aeneas3 said:
I do not agree with all of those uses but class 6 should be fine for your phone, even class 4 may be. plenty of info on the web if you want to check it out more.
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The problem with these ratings is that they're intended for use in recording devices, and don't discuss suitability for use in a device such as a PDA where you'll be running programs off of the card.
The information I've seen on the 'net is sketchy, which is why I'm asking here.
Two things to answer:
1) What class is suitable for running programs from the card?
2) What brand/model of card comes closest to advertised rating?
BillTheCat said:
The problem with these ratings is that they're intended for use in recording devices, and don't discuss suitability for use in a device such as a PDA where you'll be running programs off of the card.
The information I've seen on the 'net is sketchy, which is why I'm asking here.
Two things to answer:
1) What class is suitable for running programs from the card?
2) What brand/model of card comes closest to advertised rating?
Click to expand...
Click to collapse
It really depends on a number of things, how much information is being used at one time for a certain app, since all apps are different. So you can't really say, but if you want to make sure then go with a class 10. A class 6 should be fine for most of the apps on android though.
As for which brand of card comes closest to advertised. Each Sd card is different just like every processor is different. You can get a Kingston 8gig class 4 that only transfers at 3mb/s or one that transfers at 4.2 mb/s. Generally a good standard to go by is (cheap/fast/reliable) you can only pick two.
The only way you are going to know the actual speed of the card is to bench test it. For my money though I would probably go with kingston or pny.
The stock card is a Sandisk class 4 and based on that I would say that a class 4 would be fine, but a higher class shouldn't hurt.
capman231
My stock card is a samsung class 2..... And it is forever unexpectedly unmounting.......
Just ordered a Kingston 16gig class 4 for $30 shipped on amazon.
i just bought a 2GB PNY from BestBuy for $7. Couldn't be happier!
It really depends on what you plan on doing with the card/phone. If you are just going to use it for apps and smaller data files the class 4 or 6 will be fine. For me I use the phone for work and media. I stream music via bluetooth in my car and wired to my boat while also storing larger pdfs for work, like my companies catalog. Not to mention if I ever want to take any 720p vids.
I have a 16gb class 6 that has outlived its usefulness as Android stores more data on it than my previous windows phone, so I'm deleting more & more music to make room. I just purchased a Wintec 32gb class 10. I will test the speed with the card in the phone mounted to my computer via usb and if the speeds aren't there I have no problem putting it in a card reader to transfer what I need. I can easily throw 18gb of 192bit mp3s on it, more if I keep some of the songs as flac. I feel the time saved transferring justifies the $76 price.
If you go with a larger card just remember to unmount it before disconnecting and you'll save yourself a lot of headaches.
I want a 16 gb card, but which model is the fastest ? i know a class 4 can outperform a class 6 card and so on , a class 4 pny card? a class 4 kingston? or a class 6 trascend?
You have it backwards a class six is supposed to out perform a class four and a class ten is supposed to out perform a class six.
Sent from skynet using XDA Premium Resistance App
mudknot2005 said:
You have it backwards a class six is supposed to out perform a class four and a class ten is supposed to out perform a class six.
Sent from skynet using XDA Premium Resistance App
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apparently the brands lie when they say what type of cards they're selling, think of it like a 5 mp camera outperforming an 8 mp camera i CAN happen
Chad_Petree said:
apparently the brands lie when they say what type of cards they're selling, think of it like a 5 mp camera outperforming an 8 mp camera i CAN happen
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I'm not saying it can't, I have a 8 mega pixel sony cybershot that has a carl ziess lens and its pictures are way clearer then my 14 mega pixel cannon point and shoot, but like I said before you have to bench test it before you know its true potential. One kingston 16gig class 10 is not going to preform the same as another kingston 16gig class 10. It is possible to have a class 6 out perform a class 10, but in general the higher the class the faster the transfer rates.
mudknot2005 said:
I'm not saying it can't, I have a 8 mega pixel sony cybershot that has a carl ziess lens and its pictures are way clearer then my 14 mega pixel cannon point and shoot, but like I said before you have to bench test it before you know its true potential. One kingston 16gig class 10 is not going to preform the same as another kingston 16gig class 10. It is possible to have a class 6 out perform a class 10, but in general the higher the class the faster the transfer rates.
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should i get the trascend class 6 then? the thing is i dont anything about that brand, are they any good?
Chad_Petree said:
should i get the trascend class 6 then? the thing is i dont anything about that brand, are they any good?
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Personally I am not sure I tend to stick with pny and kingston. What I would recommend is looking on amazon or another place that has reviews usually a good reviewer will post a bench test with transfer rates.
I have been using this Adata 16gb cl6 for over a year and a half. The only problems I've had with it are occasional corrupting, but that is completely attributable to my lack of unmounting the card before disconnect. I haven't had a single issue since I started unmounting.
I would also recommend their cl10 card which can be found here.
I wish Adata made a 32gb version. I will report my results on the Wintec once I receive it.
I used a class 4 16gb SanDisk for a long time and it always was fine. I am a sucker for room though, and bought a Lexar 32GB Class 10 and I really couldnt be happier.
I just researched this the other day and can't find the link for the life of me..
Basically from what I read the class 2 and class 4 cards have a faster read than the class 6 and 10's. It has to do with some initializing the 6 and 10's do which is an extra step compared to the 2 and 4's.
For a digital camera the class 6's and 10's are better but for phones a class 4 is ideal. If I can find that darn link i'll post it.
I have an 8gb class 6 transend in my N1 atm and when I get my Inspire in tomorrow i'm going to test the class 4 against the class 6 to see which one has a higher read speed.
Can asus transformer really take advantage of a Class 10 MicroSD card? Or should i just buy a class 4?
The difference in speed is noticeable but it depends on the price difference...
I think so. I have a samsung 32 Giga class 10 and the speed is appreciable.
You can find on amazone for around 35 Euros this type of micro sd
The class Does make a difference, I have a 32 class 8 that works very noticeably better than my class 2 4gb. If you do HD video or heavy file transfer jump for the higher class. Class 6+ should be plenty fast enough for the average user, I'd avoid less than 4 though. Just my thoughts.
from what Ive read on this forum though class 10 write speeds are faster in some devices the way android devices read is different and you actually want something like a class 4. thread is in one of the general forums, title is something about looking for fast 32GB SD cards. That being said I picked up 2 class 4 32GB micro SD cards from newegg when i got this transformer. the second went to my G2X replacing a 16gb class 10 card and i dont notice any loss of speed.
Yea. this is also depending on devices ability in handling class 6 to class 10..
Some older device can only handle 32GB with class 6 max but would give all sort of problems for the same 32GB with class 8 or class 10.
But this TF101 would have no problem for all type of classes available since it's running dual core by default.. So a class 10 would be the best choice to fully utilize TF101 true power and speed..
Sent from Transformer TF101 (B60) via XDA Premium HD
farsight73 said:
Yea. this is also depending on devices ability in handling class 6 to class 10..
Some older device can only handle 32GB with class 6 max but would give all sort of problems for the same 32GB with class 8 or class 10.
But this TF101 would have no problem for all type of classes available since it's running dual core by default.. So a class 10 would be the best choice to fully utilize TF101 true power and speed..
Sent from Transformer TF101 (B60) via XDA Premium HD
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I have never heard of an older device having issues with faster card simply because of the class speed, they just wont read it at the speed the card is capable of. My G1 and N1 both handled class 10 cards without issue even though the phones could not read that fast.
Ive also never heard or see how a dual core would make any noticeable difference on read and write speeds.
BTW I think if my memory is correct the difference in class speeds was read/write. if you plan to transfer lots from device to device or constantly write to the card like a digital camera you would want class 10. if you have an android that will mostly be reading a class 4 or so was recommended.
EDIT: found one of the links.
http://forum.xda-developers.com/showthread.php?t=1031312&page=2
zarathustrax
If you're using this for a phone, you may not want a class 10. A class 2 or 4 Sandisk may be better for you. Depends what you're using it for.
Class 10 gives fast sequential speeds, but it usually sacrifices random read, write and access speeds. I could go into the reason why this happens, but I've posted several times about that, so you can check my previous posts for that.
Class 10 is good for digital cameras or other things where sequential speed is important and random speeds aren't important. If you're using the card to run apps off of, or system files for Android, or any OS actually, or using it for WP7, or anything that will need sequential speeds and fast access times, class 10s are slower than good quality class 2 or 4 cards like Sandisk.
Higher class DOES NOT mean better or faster for everything. Class only refers to sequential write speed. Different types of cards are better and faster for different tasks. Class 10s will many times slow down or cause lag in phones, depending on how the phone uses it. Sandisk class 2 and 4 cards I have found to be the best all around cards for phones.
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mastermind1234321 said:
Can asus transformer really take advantage of a Class 10 MicroSD card? Or should i just buy a class 4?
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Depending on the usage since by default /sdcard is mapped into its internal storage, uSD (Removable/MicroSD) is hardly used by the apps, of course, media file, backup (Nandroid or Titanium) will be faster with faster uSD.
Here is an extremely informational post about class speeds and what they really mean. I have a 32gb c10 and love it but it would behoove you to check out the Small Block Write Speeds in this post to see the real differences of read/write speeds.