Database Develop

Memory Card Benchmarks 2gb v 16gb

All,
Just thought i'd let you know the benchmarks I got from the exisiting 2gb card and a new 16gb card I've bought.
The card I've bought is the new Sandisk Class 4 Ultra micro sdhc which cost me £50 from Amazon.co.uk. I was a bit sceptical at first as the 2gb seemed quite fast so wondered what class it was as it doesn't say and I didn't want the new card to be slower. But I went ahead and bought it anyway as i needed the space.
Both cards are formatted to fat32 with 4096 of allocation
So, CrystalDiskMark benchmarks...
100mb file, 3 passes...
Code:
100mb file Sandisk 2gb Sandisk 16gb
Read Write Read Write
Sequential 10.67 6.639 19.93 16.57
Random Write 512k 10.55 1.261 19.52 2.634
Random Write 4k 2.822 0.010 3.984 0.026
Speeds are in MB/s
Quite a bit faster than I was expecting, so quite happy about this. I know there will be some hardware limitations in the phone so it can only read / write at certain speeds, but for taking pictures, it can save the images quicker and thats a plus for me. Plus the reading of data in music player etc...
Hope it helps some people

nicelad_uk said:
All,
Just thought i'd let you know the benchmarks I got from the exisiting 2gb card and a new 16gb card I've bought.
The card I've bought is the new Sandisk Class 4 Ultra micro sdhc which cost me £50 from Amazon.co.uk. I was a bit sceptical at first as the 2gb seemed quite fast so wondered what class it was as it doesn't say and I didn't want the new card to be slower. But I went ahead and bought it anyway as i needed the space.
Both cards are formatted to fat32 with 4096 of allocation
So, CrystalDiskMark benchmarks...
100mb file, 3 passes...
Code:
100mb file Sandisk 2gb Sandisk 16gb
Read Write Read Write
Sequential 10.67 6.639 19.93 16.57
Random Write 512k 10.55 1.261 19.52 2.634
Random Write 4k 2.822 0.010 3.984 0.026
Speeds are in MB/s
Quite a bit faster than I was expecting, so quite happy about this. I know there will be some hardware limitations in the phone so it can only read / write at certain speeds, but for taking pictures, it can save the images quicker and thats a plus for me. Plus the reading of data in music player etc...
Hope it helps some people
Click to expand...
Click to collapse
quite an impressive hike in write speeds.
I did wonder about the transcend class 6 they have for £55 but then I realised it said 2-3 months expected delivery !
In the end I bought the PNY 16gb card from play for £26 it's supposed to be a class 4 I'll benchmark it when it arrives.

quite impressive
congrats mate for the new card
However, i guess it makes more sense if the larger card volume was a bit slower!
Anywayz, doesnt the bigger card have any negative effect on the battery in terms of consuming more power to mount the storage volume?

Interesting - I have a 16Gb Class 6 on it's way - should be here next week. I'll try and run the benchmarks for it and see if there is much difference.

would be nice if someone could try the class 2 sandisk 16 gb
how did you do the benchmark?

fards said:
quite an impressive hike in write speeds.
I did wonder about the transcend class 6 they have for £55 but then I realised it said 2-3 months expected delivery !
In the end I bought the PNY 16gb card from play for £26 it's supposed to be a class 4 I'll benchmark it when it arrives.
Click to expand...
Click to collapse
PNY card class 4 - where from?

I too have a class 6 16GB card on it's way and I will post my bench's as soon as it gets...

I won't buy a higher one than my 8GB one till a 32GB is released -.-

gavinfabl said:
PNY card class 4 - where from?
Click to expand...
Click to collapse
PLAY..
play.com here > >http://www.play.com/Mobiles/Mobile/4-/11540450/PNY-16GB-Micro-SDHC-Memory-Card/Product.html
the article says class 2, the review says class 4. One of my friends bought one, his is class 4.
Obviously I won't know till mine arrives !
the PNY site isn't much help
http://www.pny.eu/products.php?section=product&categoryid=4&subcategoryid=54&productid=296

Sandisk 8gb class 4 test results (similar to the 16gb class 4)-
Code:
--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------
Sequential Read : 20.268 MB/s
Sequential Write : 16.100 MB/s
Random Read 512KB : 19.866 MB/s
Random Write 512KB : 3.009 MB/s
Random Read 4KB : 4.124 MB/s
Random Write 4KB : 0.028 MB/s
Test Size : 100 MB

an idea for you all..... check your local cash converter/pawn shop. i found a lot of micro sdhc card in there.
got my self a samsung 8GB class 6 for 12.00 pounds ! (with 1 year warranty)
they also had a 16gb class 2 for 22 pounds.

Two more cards
I was using the Sandisk USB to MicroSD adapter that ships with Sandisk cards.
I get the feeling that this is limiting the benchmark results
I get
Sandisk 8Gb Class 4
Read Write
SEQ: 19.69 13.19
512k: 19.26 2.337
4k: 3.601 0.021
Kingston 16Gb Class 2
Read Write
SEQ: 19.61 6.729
512k: 19.39 1.091
4k: 3.567 0.024

Sorry guys, but I don't get it. If you buy a card to use it with your Leo these tests are pretty irrelevant. I tested myself several cards, 2GB, 4GB and 16GB, class 2 and 4, both in my PC using ATTO benchmark and in my Leo. I came to the conclusion that a class 2 micro SD card is plenty fast enough when reading/writing with the Leo, so what is the point of spending a little fortune on class 6 cards? The Leo is no high-end DSLR you know...
Using happily a 16GB Sandisk that I purchased in my local PC shop for about 35 Euros. The Leo peaks at 5.2/8.6 MB/s write/read with this card. It did exactly the same with a class 4 4GB Toshiba card and a 2GB class 4 Kingston card. Tested using ATTO Disk Benchmark v. 234 on a core i7 system running Windows 7 64 bit OS.
In my view, the ATTO benchmark is reat because it gives you a speed snapshot at different file sizes, not just the peaks. I wonder what file size is used when manufacturers clasify their cards. Let me tell you, when transfering files smaller that 1 KB, they're all bloody snails, from class 2 to class 12!

atomic_dude said:
Let me tell you, when transfering files smaller that 1 KB, they're all bloody snails, from class 2 to class 12!
Click to expand...
Click to collapse
I hear that, took ages to delete Igo8 off the SD card with all those small files
I prefer the faster cards, say class 4 or even a class 2 if it can perform like this current class 4 because I don't just use it in my phone. I use the card reader and transfer music / videos / pictures etc and with the clip battery cover, it only takes a minute to hot swap.
I know what you mean though, the phone does have limitations which make the cards only work to a certain speed, thats the same in most devices.
All in all though, nice to get some comparisons on here for people who want to know before they buy

16gb card came from play today.
It is class 2, clearly marked as such, so either they are sending out from different sources or something is up.
Either way it's a pretty quick card, I'll benchmark it later on

I was waiting for a 32gb card to be released but that doesn't look like it is going to happen any time soon...
So I am buying a 16gb card. I am going to be using the card in my phone only. Out of these 2 cards which would recommend -
16gb Kingston class 4 or a 16gb Peak class 6 (for a couple of pounds extra)
Part of me wants to go for the class 6 for the speed (but will I really notice it in a phone?) but on the other hand Kingston is a well known brand and I have never heard of Peak.
Thanks

What would you say is the minimum class that i could get a decent experience when playing music/movies and launching apps?

A class 2 card would do the job nicely.

Thanks, will probs get a class 2 16GB one

fards said:
16gb card came from play today.
It is class 2, clearly marked as such, so either they are sending out from different sources or something is up.
Either way it's a pretty quick card, I'll benchmark it later on
Click to expand...
Click to collapse
Took your advice and bought the 16gb one you recommended from play too in the hope it was Class4. No idea what Class it actually is but its definately quicker than the previous 2Gb, and 8Gb cards I had in it! - I can tell cus when I wizz through the photos in landscape mode they appear almost instantly whereas the other cards took time to load them up. or maybe thats cus of this new ROM - I'm not sure.....hmmm....

16GB MicroSD - how much will the Class affect performance?

Evening XDA!
So... It's time I upgraded my HD2's capacity. 16GB MicroSD's are now reasonably (ish! @ under £30) priced so that's what I want to go for. Most are Class 2 but I've seen a few Class 6s knocking about too.
Is the speed difference, in reality, a massive issue? Stuff I do that perhaps might require speed:
Watching XviDs in TCPMP
Taking photos
TomTom/iGO
Music
Will I notice much of a difference between the two classes of cards?
Any feedback is much appreciated! Thanks!

u just can compare my
kingston sdhc 8gb class 6
to
sandisk sdhc 16gb class 2
i could figure out a speed advantage of the class 6 about 0.8 mb per sec
my 16gb class 2 got 3.8Mb/sec
my 8 gb class 6 got 4.5Mb/sec
copiing the same file....
if somebody got different rates pls post them there.
i never had any problem with the lower data transfer rate of my 16gb sdhc, smooth vids, instant starting apps, nearly same "short" install time for apps
Ps.: i was copiing a 7xx Mb video file to my HD2 in HDD mode

I have a class 2 16gb in my HD2 - I've had no problems with the speed.
watching AVI files with coreplayer is always smooth, tomtom loads up in about 3-4 seconds.
Remember the read speed is a lot higher than the write speed.

Generally you are going to be OK with a lower class. There are however certain things that a lower class memory card will limit, like HD video playback or a high speed game installed on the card (I think Asphalt is a good example of this).
You have to decide what your going to be using the card for and adjust how much you are expecting to spend accordingly.
Be aware that if you are going for a reputable brand then buy from a reputable site. Buying a Kingston or Sandisk from Ebay for a knock down price may mean you getting a cheap knock off. Tread carefully, and give this article a good read, give you a better idea of how easy it is to buy a knock-off card.
http://www.bunniestudios.com/blog/?p=918
Hope this helps

I have been wondering the same because I have been debating on buying the new Kingston Class 10 16GB MicroSDHC card but if the HD2 can't fully utilize the speed, I will probably splurge for the SanDisk 32GB MicroSDHC card and get rid of a few of my 16GB MicroSDHC cards. It is kinda a hassle to carry around a card full of movies, card full of music, and a card full of pictures so I would love to get a 32GB when the price comes down a little more.

Anyone know any reputable sites??? I'm in Australia... So hard to find one to ship Australia and cheap!
I'm after the Kingston 16GB Class 10 card!!!

Thanks a lot for the tip guys. I'll definitely have to have a think about whether I'll need the extra speed, of the top off my head I don't think so but there's a good chance I'll be slapping a few PSX ISO's on the SD card in the future which I guess might be a factor!
@above - unsure of Aus sites, but stay away from ebay as another poster said. 99% of stuff from China (and a lot of the stuff local too) is cheap, low capacity memory hacked to appear to be 16GB and often enough they even include viruses on the damn things too!
UK buyers - Play.com are doing Class2 16GB's for £28 delivered (+Quidco cashback, www.quidco.com)

Jackuuuuu said:
Anyone know any reputable sites??? I'm in Australia... So hard to find one to ship Australia and cheap!
I'm after the Kingston 16GB Class 10 card!!!
Click to expand...
Click to collapse
the only place in oz i could find a 16gb card for my hd2 was vodafone. it wasn't cheap ($89aud) but i've not had any issues with it. it says it's a class 2. i'm sure i read here on the forum that the class really isn't an issue with the hd2 anyway.

Jackuuuuu said:
Anyone know any reputable sites??? I'm in Australia... So hard to find one to ship Australia and cheap!
I'm after the Kingston 16GB Class 10 card!!!
Click to expand...
Click to collapse
Umart sell the Kingston 16GB Class 2 Micro SD for $55. Unfortunately it's the only one they sell (no class 6 available on the website). Have purchased several times from them with no issues.

I did not even know there was a difference in classes. Glad I read this thread.

Class 10 SD cards
Anything over class 2 (which means it can read at a minimum or 2Mb sec) will be a waste of money on a mobile phone. Class 4 and up to the latest class 10, are designed for the speed needed on high end digital cameras that shoot HD videos.
Save your money, buy a good quality, genuine class 2 card, you will not see any difference on an HD2 with a class 10 card in it.

Some users reported that after changing their bundled class 2 card with class 6, music, album etc are up to 3 times faster in loading.
I just ordered a class 6 card to change it with mine class 2, will report about it.

Class
Im using the 16 gb kingston class 2 and it works like a sharm... if you are really picky you can go with a higher class card but be prepared to add some extra cash for a tiny bit of quicker preformance
Just so you will understand how the cards are built there is not much diference amongst the classes. This cards all have 16 Gb space whitch cover the tiny sd card. the diference is that on the higher class cards, the bytes will be shared out in a much more constructive way so it makes it easyer for the phone to read the data. we talk up to 2 seconds faster from the lowest class card to the highest class card. I belive thats from class 2 to class 6.
Good luck with your choice

MicroSDHC 32GB C2 or 16GB C10?

I was thinking about upgrading from my current Sandisk 16GB c2. As many of you know Sandisk is out with there 32GB c2 MicroSDHC which is selling for $100 by Verizon. But if you look on ebay you can also find other 32gb c2/c4 MicroSDHC from TopRAM and Centon. Now I personally have never heard any of these company so I am very spectacle.
Now my question is which would you go with 32GB c2 or 16GB class c6/c10? To me its storage vs transfer rate.
1) Sandisk 32GB MicroSDHC Class 2 = $100
2) Kingston 16GB MicroSDHC Class 10 = $135

Clearly you should really been far 16GB storage even as decided to use even go want to do look more like 32GB transfer rate?

FYI 16gb class 10 Kingston is $98.99 over @ newegg and if you look hard enough u can find it around $79

I am not sure what you are saying but some claims that the Sandisk 32GB C2 they get around 5mb/s write. So IDK ATM as Kingston 32GB Class 6 is selling for $700 on ebay WTF? Last time I check they didn't even have 32GB class 2, could be fake who knows.

sti-06 said:
FYI 16gb class 10 Kingston is $98.99 over @ newegg and if you look hard enough u can find it around $79
Click to expand...
Click to collapse
I am aware of that as they been had it for sometimes now but I was more leading to 32GB but who knows if I do decide to go with 16GB I might go with C10 from Kingston.
But has anyone tried TopRAM 32GB Class 4 or Centon 32GB Class 4? If so is it thoughly tested via R/W IOPs and fully chunking the card.

HyperNode said:
I am aware of that as they been had it for sometimes now but I was more leading to 32GB but who knows if I do decide to go with 16GB I might go with C10 from Kingston.
But has anyone tried TopRAM 32GB Class 4 or Centon 32GB Class 4? If so is it thoughly tested via R/W IOPs and fully chunking the card.
Click to expand...
Click to collapse
You cant go wrong with ScanDisk
its a safe bet

ilordvader could you test the R/W speed of your card and post back.

So after searching and reading many threads in various forums I came to the conclusion that even class 6 is an overkill so class 10 is out of the question other than bragging rights.
Now has anyone used Transcend or A-Data? they seem to be selling at Newegg so they can't be questionable unknown like TopRAM or Centon which I never even heard of until I was searching for MicroSDHC.
Anyone recommend any 16GB class 6 cards? I am still unsure on not ordering SanDisk 32GB Class 2 as storage is high but the speed is low. As majority of user who running Android port do recommend getting anything over class 2.

Extreme candidates:
Sandisk 32GB MicroSDHC Class 2 - $100 < Storage
Kingston 16GB MicroSDHC Class 10 - $135 < Speed
Are these the only reputable 16GB Class 6 candidates?
A-Data 16GB Class 6 - $53.99
Transcend 16GB Class 6 - $62.99
Lexar 16GB Class 6 - $69.99 < Questionable; produce inferior products
Has anyone heard of these company before?
Centon 16GB Class 6 - $58.99 < Questionable; but listed under Newegg
3C_Pro 16GB Class 6 - $44.99
TOPRAM 16GB Class 6 - $44.99
Team 16GB Class 6 - $44.99

i bought this. Komputerbay 32GB MicroSD SDHC Microsdhc Class 6. £88, which was preety steep.
i get read speads of around 3.5 mb/s and write speeds of 4.5 mb/s, i cant find my 2 speed to compare but it does seem quicker.
though the web site gaurantees minimum 6 mb/s write speeds.
it was amazon so i though it would be ok.
edit.
just tested it again i am getting 6 mb/s read speeds now.

johnwalk did you thoroughly test the card? by formatting and filling it up fully with chunks? if you can confirm its overall performance then I might also order it. Can't wait for other vendors to make it as I need it now. On class 2 card it takes like 30min to just move around 4.5gb now that's way to long for me as I'm always on the go, but thanks for your reply as ill look in to that company.

I don't want to spoil anything, but my HD2 just destroyed my 8GB Sandisk card. 'Luckily' this was not a $100 card, but still.......
Are you shure you want to spent that much, or did you never have your previous card(s) being destroyed?
Wish you goodluck anyway

i just formated it normally the filled it up with music and video still got two gigs left im like a dog with two tails i dont know what to listen to first lol. but the tests i done with it was when it was 28 gigs full only had it two weeks and at first it was slow, especially when you went into the music player it took a few seconds to update but hey a lot of files to browse but its been ok the past few days, but im now at the stage where i dont plug it into my computer anyway i just access my pc and transfer albums by wifi takes about a minute an album, any video usually gets streamed anyway, but wanted a bigger selection when i go on holiday next month.
def recomend this card thougth the first few days i thought i should have gone for the class two, im now happy with it now it all working properly.

I'm at work now and in an hour when I go home ill thoroughly look in to this card and post my finding. As I never even have heard of the company and if I like it ill post feedback here so others can buy it with confidence.
Far as flr goes how did HD2 destroy your card? corrupted the data? or the flash device is unreadable fully? BTW I never needed an flash card before as this is my first smartphone. Also I was welling to spend $750 few months before HD2 was officially deployed in USA. So I'm not worried about $100.
PS: Also have an eye on HD3 as the spec is 90% accurate from my guess after looking at the specs. So let's see what happens as I don't want a device which may have 2 versions, hence EU-Leo512 and EU-Leo1024.

off topic but im seriously looking into the new batch of android tablets which are just coming out now, maybe 7" or 10"

HyperNode said:
I'm at work now and in an hour when I go home ill thoroughly look in to this card and post my finding. As I never even have heard of the company and if I like it ill post feedback here so others can buy it with confidence.
Far as flr goes how did HD2 destroy your card? corrupted the data? or the flash device is unreadable fully? BTW I never needed an flash card before as this is my first smartphone. Also I was welling to spend $750 few months before HD2 was officially deployed in USA. So I'm not worried about $100.
PS: Also have an eye on HD3 as the spec is 90% accurate from my guess after looking at the specs. So let's see what happens as I don't want a device which may have 2 versions, hence EU-Leo512 and EU-Leo1024.
Click to expand...
Click to collapse
Hope the HD3 is for Att this time

I've got up to 14.7 MB/sec on my 16GB Kingston Class 10.. and my phone works soo smooth now!
Compared android sliding of homepage on my 2GB Class 2 card and my 16GB Class 10 card, and there is some lag with the 2GB card, and none at all (100% realtime) with the 16GB card..
So, personally I'd say; save some exrtra bucks and go for the 16GB Class 10 Kingston one!

@HyperNode
There are several threads here regarding SD cards being destroyed, or whatever description is given to it.
From one moment to another you get the message that you're card has to be formatted. If you accept it, it says something like (only) 30 MB being available, which doesn't get formatted. Your card can no longer be seen by your HD2, nor by your PC or any other cardreader (afaik)
I´ve never had this problem before. It looks like a specific HD2 problem.
Either with or without a combination to a specific brand or card.
I'm very curious about your experiences.
Please keep us updated.
Thanks and goodluck!

Same here. Mythen hd 2 just destroyed my SD card des SYstem ago
It happened already bevor, Thatcher i couldn't See Thema data anymore , but nie i Cantel even Format it anymore
Sent from my HTC Desire using Tapatalk

HD2 Memory 32G $99 CLASS 4!

Kingston 32GB Micro SDHC Flash Card with MicroSD Reader Gen 2 Model MRG2+SDC4/32GB
Average Rating 5 out of 5 eggs5/5(1 reviews)
In stock.
Now: $99.99
*
Free Shipping (restrictions apply)
Additional fees may apply to shipments to AK, HI and PR.
At New Egg!

This is worth it, take it from someone who was looking for something other than SanDisk 32GB C2 I have been waiting for Kingston's 32GB C4 for long time and when it came out I got it though offical site for $159.

Yeah, I ordered one of these last week from newegg along with an otterbox defender case for $33 w/free shipping for both.... not too bad at all. Should be getting them today. Has anyone used the Kingston class 4 32gb card for running android on the hd2?
Sent from my HTC HD2 using XDA App

Well, far as I know people do claim the R/W IOPs for HD2 when card inside the device won't go beyond class 2 rate but some who did use class 4-6 cards said they did see major improvement in terms of loading OS/Apps from mSD card. Anything beyond class 4 is an overkill on HD2 that I accept unless you are moving around massive amount of data and use HD2 as your mean to transfer it, in that case just buy thumb drive.
"Sent from my PC using THE hand" lol

I was in a Fry's Electronics the other day and I saw a 16gb Class 10 microsd card for $32.00. Don't remember the maker but it was not name brand, that is extremely questionable

wow
my videos which are about 12g play almost instantly now i love this card and the free usb reader, thanks kingston

Ya this card was worth waiting for hell I shot up an storm in this section comparing other vendors. Now I have the SanDisk 16GB C2 card not sure what to do with it, hopefully I can sell that cheap.

same
stuck with the sandisk

I ordered this 32GB class 4 card from Kingston and it is much slower then my old SanDisk card. Booting Android took over 5 minutes and after that the device still is VERY slow.
With its card reader I could copy my files onto it with 3-4MB/s.
Then I installed SKTools under Windows Mobile and used its benchmark tool to compare my SD Cards:
My old SanDisk 8GB card (stock one from the blackstone, afaik class 2): ~6,6MB/s reading and 1,1-1,5MB/s writing
The new class 4 32GB Kingston card: ~2,2MB/s reading and 500-700KB/s writing
So I can't use Android with this crappy SD card.

Ya IDK man same on my end. Took me 25min to traf 320mb files, ATM showing me 116min to traf 4.1gb.

i got kingston 23gb class 4. really disappointed takes forever to transfer. but speed test shows its class 4.
http://forum.xda-developers.com/showthread.php?t=861232
oh yeah i got the one from frys it rocks to bad its not 32gb.

I would stick with SanDisk.
I wanned to try out a faster card so got a class 6 Kingston 8gb.. while it loaded things faster, it caused severe stuttering and lagginess at times.
Upon reserach i found, kingston, and many other cards are not the same quality grade as sandisk, i am told in order to be price competitive they buy crap from others at cheap and stick thier name in it. And sometimes they buy rejects from sandisk, toshiba, samsung etc and brand them.....
Unfortunately i cant remmeber the links i researched....
So i would stick with sandisk, or another proven manufacturer....

UThis is total BS, I started it at like 6PM and now its 10:40PM and still 78min's to go WTF and its just 4.2GB music files avg at like 3-6mb/ea. Now I remember putting the whole dir in SanDisk 16GB Class 2 in less than 40min. So WTF does it take so long? Also as I wrote to Kingston CS ill share it here.
To make the file transfer go faster you have to directly allocate the file in memory thus saving time for R/W IO access. I did test many times but I am not even sure HD2 is following SD 2.0 or is it just this POS card no were close to even the stock SanDisk's.
Test: Dir with 5 files at 5mb/ea so thats 25mb. If you copy each file you reduce the time by 3x but if you copy the dir all the objects inside takes time to allocate for some reason.
PS: I am thinking about now getting SanDisk 32GB Class 2.
***UPDATE***
3.85GB
Write
--------
SanDisk 16GB Class 2 = 26min
Kingston 32GB Class 4 = 191min

HyperNode said:
Ya IDK man same on my end. Took me 25min to traf 320mb files, ATM showing me 116min to traf 4.1gb.
Click to expand...
Click to collapse
I also don't understand this.. I have a 16gb C2 card and wanted to experiment a lot with the various android roms out there, so thought a C4 would be the answer. ordered a 16gb C4 and it is always slower than the C2. a full 30 seconds on booting Android.
This confuses me.....okay okay .. thats not hard to do, but as far as I'm concerned if a card is rated at twice the "constant" speed of the other .. it should be faster...
<fx: scratches head and moves on>

HyperNode said:
Well, far as I know people do claim the R/W IOPs for HD2 when card inside the device won't go beyond class 2 rate but some who did use class 4-6 cards said they did see major improvement in terms of loading OS/Apps from mSD card. Anything beyond class 4 is an overkill on HD2 that I accept unless you are moving around massive amount of data and use HD2 as your mean to transfer it, in that case just buy thumb drive.
"Sent from my PC using THE hand" lol
Click to expand...
Click to collapse
I think it really depends on the card and not the class. I have a couple of Class4 and Class6 cards with identical builds of android and my class2 16gb continually outperform them in boot times and general speed. Class only designates write speed and there is a lot more to an SD card's performance that is not captured in the class designation.

ATM I am thinking about returning the Kingston 32GB C4 as I spoke to Kingston Tech Support and might go with SanDisk 32GB C2. Alot of people say SanDisk is superior and is faster for some reason and getting close to class 4 rating.

HyperNode said:
ATM I am thinking about returning the Kingston 32GB C4 as I spoke to Kingston Tech Support and might go with SanDisk 32GB C2. Alot of people say SanDisk is superior and is faster for some reason and getting close to class 4 rating.
Click to expand...
Click to collapse
I can only quote my experience and that is that kingston C4 is NOT fast at all.
Good luck to you.. and if you find the San Disk C4 is sooo much faster than the C2 can you report back please .. ?? So I can go get one

I just bought a kingston 32gb class 6 micro sdhc but when ever i put it in my hd2 it just freezes up and as soon as I remove the card it works fine again.At first i thought that it was a fake so I:
1)performed multiple tests,
2)reformated a 1000 times,
3)even putting 20gb of data just to make sure.
Turns out that it is authentic and it works perfectly on my girlfriend's htc BalckStone it also worked when I installed NAND (which i later removed due to insufficient memory).Ive been searching for days, I think its a windows mobile issue, any tips??

gothikserpent said:
I just bought a kingston 32gb class 6 micro sdhc but when ever i put it in my hd2 it just freezes up and as soon as I remove the card it works fine again.At first i thought that it was a fake so I:
1)performed multiple tests,
2)reformated a 1000 times,
3)even putting 20gb of data just to make sure.
Turns out that it is authentic and it works perfectly on my girlfriend's htc BalckStone it also worked when I installed NAND (which i later removed due to insufficient memory).Ive been searching for days, I think its a windows mobile issue, any tips??
Click to expand...
Click to collapse
LOL you are way to funny man as you said "I just bought a kingston 32gb class 6 micro sdhc" and then on top of that "Turns out that it is authentic".
I am guessing you got this card from eBay? If thats the case then its fake ill tell you why as there is no Kingston 32GB Class 6 card ATM. My best bet is you do extended data testing on it and verify the content to make sure its not corrupted. But if I was you I wouldn't do any of this as ill return that POS, why take chance with your data? Also NEVER buy memory cards via eBay or else you will be pwned with notorious chinese fakes.
But for those who actually thinking about buying the legit Kingston 32GB Class 4 microSD read below and think twice.
STHNS said:
Here this might be helpful to you.
Code:
df /dev/mnt/sdcard
File system: FAT32 (0x0c)
Used space: 16.0 KB (16,384 bytes)
Free space: 29.8 GB (32,073,891,840 bytes)
The data below is the actual IOPs from System (USB: Standard-A) to Device (USB: Micro-B) via USB (USB 2.0/SD 2.0). I am not using any type of card reader for this test as we only want the actual data rate of the card itself natively while its mounted in the device.
Subject: Kingston 32GB Class 4 (4MB/s) microSDHC.
Sequential Test Data (Block Size = 1024KB|0 Fill = 0x00)
Read [MB/s]: 13.07+11.72+13.11=37.9/3=12.63
Write [MB/s]: 4.080+3.339+1.592=9.011/3=3.00
Sequential Test Data (Block Size = 1024KB|1 Fill = 0xFF)
Read [MB/s]: 13.07+13.10+11.61=37.78/3=12.59
Write [MB/s]: 3.659+2.618+3.607=9.884/3=3.30
Mode: Low level R+W+V initialization
Data volume: 30588MBytes
Patterns: 18 sets, 8 of "walking one", 8 of "walking zero", 55h, AAh
Writing speed [03:24:28]: 2.49 MByte/s
Reading speed [00:44:20]: 11.5 MByte/s
Burst write: 4.0+4.0+4.0=4.0 MB/s
Burst read: 10.0+9.0+9.0=9.33 MB/s
Click to expand...
Click to collapse

It's class 4 but it's very expensive.. too much money for just a SD card

32GB Class 6 MicroSD - Does it exist?

Where can you purchase an actual Class 6 32GB MicroSD card, or do they even exist right now? I've seen some on ebay, but I'm doubtful that they are legit.
Here's the one I found on Ebay:
32GB on Ebay
Is it really even worth trying to get a class 6 card? I mean, my 16GB is a class 6 and I've never had anything less. But is the upcharge you pay really worth the money?

Newegg has 5 different 32GB cards:
http://goo.gl/eFQn9
It doesn't appear that there are any 32GB Class 6 cards out at the moment.
Kingston's own website doesn't list a 32GB Class 6, so that eBay listing is probably bogus.
I don't think for basic phone storage the class makes a difference.

Bullhead00 said:
Where can you purchase an actual Class 6 32GB MicroSD card, or do they even exist right now? I've seen some on ebay, but I'm doubtful that they are legit.
Here's the one I found on Ebay:
32GB on Ebay
Is it really even worth trying to get a class 6 card? I mean, my 16GB is a class 6 and I've never had anything less. But is the upcharge you pay really worth the money?
Click to expand...
Click to collapse
I have tried a few different class 6 cards and Sandisk class 2 was better. Don't wast the money.

Patriot is releasing a Class 10 16Gb and 32 Gb micro SDHC cards.
Patriot is releasing a Class 10 16Gb and 32Gb micro SDHC cards.
http://forum.xda-developers.com/showthread.php?t=864091
No release date or price as of yet.

JBetsinger said:
Patriot is releasing a Class 10 16Gb and 32Gb micro SDHC cards.
http://forum.xda-developers.com/showthread.php?t=864091
No release date or price as of yet.
Click to expand...
Click to collapse
Appreciate the info! I believe I'll be holding out for this one. I have two 16GB that I use at the moment so I pretty much have things covered. I'm really looking forward to getting a 32GB though. It'll be nice to have a phone with 40GB storage capacity.

You have to keep in mind that the class of an SD card only determines the write speed. So, for taking high res photos and HD video, the class is important. But for Apps2SD and other uses that rely on reading, the class is fairly irrelevant.
Sent from my ADR6300

raptir said:
You have to keep in mind that the class of an SD card only determines the write speed. So, for taking high res photos and HD video, the class is important. But for Apps2SD and other uses that rely on reading, the class is fairly irrelevant.
Sent from my ADR6300
Click to expand...
Click to collapse
Writing takes much longer than reading though it seems, because when I run Quandrant and it measures I/O, writing takes much longer than reading.
I found a Class-4 32 gig card at Frys for 100$ so I went with it, not so much for the speed but for the capacity.

JBetsinger said:
Patriot is releasing a Class 10 16Gb and 32Gb micro SDHC cards.
http://forum.xda-developers.com/showthread.php?t=864091
No release date or price as of yet.
Click to expand...
Click to collapse
If you read only like 2 posts down, it's actually an SD, not a micro. Sorry.

Well the best card on the market for the price is a 16gb
I have found this card at newegg class 10. 16gb, even got a review for the htc incredible that was not bad, but the person did say that it only read it as a class 6. Was only $28. its sold out as of right now, but when it comes back you should probably get one. Im hoping this company makes a 32gb version.
but if you want a known name brand then I would go with Patriot 16gb class 10 microsd which happens to be also out of stock but goes for $38. Probably just the price difference on name brand, but you never know. both are unfortunately sold out. means they are hot right now.