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....

List of SD Cards that don't work for Nookie Froyo

Please post in this thread if you have a SD card that has not worked for you with Nookie Froyo. Please post the brand, capacity, class, and version of Froyo you are using. I will keep an updated list in this post:
Known Good
16GB Class 4 Patriot - 5.9, 6.6, 6.7
8GB Class 6 Lexar - 6.6, 6.7
8GB Class 6 Wintec - 5.9 (untested 6.6 and 6.7)
4GB Class 2 MicroCenter brand - 5.9, 6.6, 6.7
4GB Class 6 Transcend - 5.9, 6.6, 6.7
4GB Class 6 Adata - 5.9 (untested 6.6 and 6.7)
2GB Class 4 Sandisk - 6.6, 6.7
Known Bad:
16GB Class 6 RiData - hangs on Android boot screen with 5.9, with 6.6 and 6.7 it boots but gets endless loops of force closes. Tried multiple cards, all brand new.
16GB Class 10 Patriot - same symptoms as above
16GB Class 10 Wintec - same symptoms as above
16GB Class 6 Transcend - same symptoms as above
16GB Class 10 Adata - same symptoms as above
Questionable:
16GB Class 4 Sandisk

Known good:
Lexar 8GB class 6 - 6.6, 6.7
Sandisk 2GB Class 4 - 6.6, 6.7
no experience with any problematic MiscroSD's yet...

Sandisk 16GB class 4, I assume same problem as all other 16 GB cards.

MXIIA said:
Sandisk 16GB class 4, I assume same problem as all other 16 GB cards.
Click to expand...
Click to collapse
Are you saying this doesn't work? It's working fine for me. Make sure you don't have a counterfeit. Apparently if the black serial numbers are not printed card it's a fake.
I can add that I didn't have any luck with the Patriot or Wintec 16GB cards.
8GB Lexar C6 does work.
My theory is the card needs to have good random write performance 512k and 4k. If 512K is 2Mbps or better seems to work. This was tested using crystaldisk mark using a USB 2.0 adapter.
Also note, performance of a particular card isn't exactly easy to determine. If I use different devices to adapt a card to the PC I get different speed results. For example on the same card, I got .5 Mbps 512k random speed using a Dell E6410 adapter, but 1Mbps using a usb microsd adapter.
Mike
Mike

I have a class 10 16g ADATA. I ran into the endless loop fc problem for 0.6.7. I formatted the card from nook stock rom then ease it from my MacBook pro by using disk utility. The endless loop fc problem went away afterward. I am still having problem with the honeycomb v4. It gave me a "enter password to decrypt the storage" screen after it boots up. No idea why it is that. Kinda frustrated ....
Sent from my PC36100 using XDA App

Speaking of counterfeit SD cards, this isa HUGE problem on ebay. Always purchase from a trusted source.
If you suspect issues with your card, H2TESTW is considered one of the better testing and benchmarking tools. Very small, very simple:
H2testw 1.4 – Gold Standard In Detecting USB Counterfeit Drives

Sorry to resurrect a month-long post, but I wanted to add my experience since I'm seeing some really unusual behavior.
16 GB Class 10 Patriot w/ Nookie Froyo development 0.6.8 - worked
16 GB Class 10 Patriot w/ Nookie Honeycomb v04 - booted but always asked for password
Here's where it gets weird:
16 GB Class 2 Samsung OEM (came with my phone) w/ Nookie Honeycomb v04
The first boot immediately after burning the img to the card will work. I boot into Honeycomb, I can play with all the features and apps, change settings, etc. It seems to work fine.
If I shut down and boot it again, it will hang at the Android boot screen. The only way I can get it to work again is to re-burn the img to the card again.
BTW, the CrystalDiskMark scores to the best of my recollection:
16 GB Class 10 Patriot
seq: 19 MB/s read, 15 MB/s write
512k: ~8 MB/s read, 0.7 MB/s write
4k: ~3 MB/s read, 0.006 MB/s write
16 GB "Class 2" Samsung
seq: 15 MB/s read, 11 MB/s write
512k: ~5 MB/s read, 0.6 MB/s write
4k: ~2 MB/s read, 0.012 MB/s write
Apparently Samsung is very conservative in the class rating they give their memory.

I've got a 16GB Sandisk microSDHC card with adaptor. It says '4' on the card's sticker, so I'm assuming it's a class 4. Does this mean my card won't work?
Also, I'm using it in my Samsung Galaxy right now. Can I just transfer the files to my PC and format the card, before using it for rooting the NC?
TIA.

Kingston 8Gb class 4 nf6.8 - boot but has problem with market.
Took me hrs to realize it was the card.
I am using patriot class 10 8GB
Works great. No problem so far. As fast as emmc 1.1 root.

wish i wouldve looked for this kind of thread sooner. bought the 16gb patriot class 10. doesnt work returning it for another class 10 8 gb

16GB Class 4 Sandisk
No problems so far 0.6.8

anyone have any review on KingMax 16GB micro SDHC class 10?
thanks

Since I plan to have videos I really want to get as much storage on a single card as possible. I DO plan to boot 2.2 (until 3.0 is ready for primetime) from eMMC, but I want to be sure it will be compatible.
REEDIT: Yeah it does support 32gb.
Anyone tried any 32GB cards?

4G class4 Toshiba worked for me

I've also tried the class 10 WinTec 16GB uSD. I can get Nookie FroYo to boot but I'm unable to installl apps from the market and most of the preloaded apps will hang at launch. I've tried multiple downloads from multiple sources and they've had the same results. The sdcard works fine with my laptop and camera, fwiw.
Sent from my NookColor using XDA App

(Note: All testing done with CM7-RC4)
Patriot 4GB Class 10 - Installs and will boot, but MASSIVE lag/stuttering, erratic behaviour, slow download speeds from Market (2-4KB/s, bursting to 200KB/s now and then). Definitely seems like a problem with class 10 cards.
SanDisk 8GB Class 4 - Works perfectly; hard to tell it's running from MicroSD and not internal memory aside from a slightly slower boot (maybe 15 seconds more).
Dane-Elec 4GB Class 4 - Works just as well as the SanDisk from limited testing. Took a little longer to cache everything up after the first boot, but worked with minimal initial hesitation after the next few boots.

[Q] Which SD card is best fast read or fast write?

I just got a Nook Color and rooted it with Autonooter 3.0
Everything works great. I'm thinking of trying Froyo or Honeycomb on a SD card.
I want to ask which SD card would work best.
Reading through the forums, I have found there are some conflicting information.
On the one hand people recommend Class 6 or higher cards.
On the other hand a number of posters have reported using a class 2 Sandisk card and got good performance.
Since the classification of SD cards only refers to the writing speed, a lower class card may have higher reading speeds than a higher class card. I 'm wondering which is most important for running Froyo/HC on Nook Color, a higher reading speed or a higher writing speed?
For reference here are some benchmarks I found on Amazon.
It appears this Sandisk class 2 card have reading speeds of up to 18MB/s, and writing speeds of up to 6MB/s
[SanDisk 16 GB microSDHC Flash Memory Card SDSDQ-016G (Bulk Packaging)]
This class 6 Transcend card have reading speeds of up to 15MB/s, and writing speeds of up to 11 MB/s.
[Transcend 8 GB microSDHC Class 6 Flash Memory Card TS8GUSDHC6E]

Here's more info for you:
http://forum.xda-developers.com/newreply.php?do=newreply&noquote=1&p=12000938

I have an 8 gig class 6 transcend in my fascinate, and a 16 gig class 6 transcend in my NC running CM7. I have a season of an anime I'm watching with Rockplayer on my morning metro ride. Both transcend cards have been great. I have two 16gb Sandisk class 2 cards. One is my "fast one" that's at least as fast as the transcend cards. One is my "slow one" that is unbearably slow for things like transferring a season of anime for watching later with rockplayer. I also have a 16gb samsung class 2 that has performance that mirrors the "slow" sandisk class 2. If I had to get another card right now, I'd probably get another transcend class 6. I've also heard great things about patriot brand, but I can neither confirm or deny those things from personal experience.

Which microSD card is the MOST STABLE and FASTEST for using HoneyComb in SD card?

So I finally got HoneyComb working on my Nook Color (NC), residing in the microSD card using a Kingston 8GB Class 4. However, this card seems to be one of the slowest and using the HC in NC is almost unusable.
Example:
- Screen rotation takes 3-5 seconds
- Opening new app, depending on which app, can take 1-5 seconds
- Browsing certain website can make the screen unresponsive
- etc..etc..
I know that the HC version available in this website is probably still in "preview" or beta stage and some slowdown is expected, but I am not expecting it to be THIS bad. So I think the culprit is the microSD card itself.
However, I have tried many different MicroSD card and none works. I.e. it gives the "decrypt storage" error when booting up the NC. The cards I have tried are:
- Patriot 16GB Class 10
- A-Data 16GB Class 10
- Kingston 8GB Class 6
The ONLY one that works so far is Sandisk. Unfortunately, from SanDisk website, I do NOT SEE ANY card higher than Class 4.
Thus, can you recommend which is the MOST STABLE and FASTEST card? I.e. the ones that did NOT give slowdown per the examples I have given above.

i'm using sandisk 4 GB class 4 HC
nookie froyo, runs fantastic.
Class 10 cards apparently dont do too well. lots of people have had issues with those. class 6 should be OK, class 2 and 4 workk very nice.

Do you have recommendation for a good Class 6 MicroSD card? SanDisk don't sell anything higher than Class 4. I tried Kingston Class 6 and my Nook Color just spit on it...

lanwarrior said:
Do you have recommendation for a good Class 6 MicroSD card? SanDisk don't sell anything higher than Class 4. I tried Kingston Class 6 and my Nook Color just spit on it...
Click to expand...
Click to collapse
I am currently running trancend 8gb class 6. Havent had any issues with froyo, HC or Cm7 booting or running.

I'm using a A-Data Class 6 16Gb card with no trouble. I do have 2 Kingston Class 4 32Gb cards and they have the issue with the decrypt garbage when you try to boot up HC from the sdcard. I've also got a Class 10 32Gb Wintec card which I have not had time to test out yet as I just got it the other day.

After a failed Kingston 16gb class 10, I got a SanDisk 8gb Class 4 and it's speedy enough. I notice very minimal slow down on some menus but I don't know if that's just the OS itself (being a preview after all)

danootz said:
After a failed Kingston 16gb class 10, I got a SanDisk 8gb Class 4 and it's speedy enough. I notice very minimal slow down on some menus but I don't know if that's just the OS itself (being a preview after all)
Click to expand...
Click to collapse
That's the exact same card I have, and you did NOT experiences any of the slowness I posted in my 1st thread?

How drastic is the difference between Class 2 and Class 4?
I know that it says that it processes twice as fast, but is it noticeable? Can somebody give an example of when you can actually tell the difference? Playing music, watching movies, booting from microsd?

I have a Sansdisk class 2 8gb card that performs just as well as my class 10 Patriot 8gb (which has booted both HC and currently used as storage for my eMMC CM7 install.)
Sansdisk severely underrates their SD's and many other manufacturers overrate theirs. It is not a perfect rating system.
I would recommend going w/ sansdisk in whatever size you can afford. Class 2/4 will be plenty fast.

Before I switched back to Froyo I was running off the SanDisk 8Gb card from BestBuy - $20 - which I found very responsive. I think it is Class 4, but I could see any label on the card itself or the package.
The SD card speed was not the reason I switched back, it was the lack of other features in HC preview. I can't wait for an AOSP release

8GB Cards
I currently have 2 8GB microsds that I switch between:
-Transcend 8GB Class 6 running Honeycomb from Amazon. Tested it with h2wtest and got 16MB/s write and 14MB/s read. (Not sure if that is a typo on the tool or not and it's supposed to be bits instead of bytes, but that's what it says).
-Sandisk 8GB Class 2 running Nookie Froyo. Tested at 14MB/s write and 18MB/s read.
Both cards run their respective ROMs well, so it seems to jibe with what chisleu said about Sandisk underrating their cards. I could also be limited by the USB adapter I was using, but I had another adapter that was limiting it to 4MB/s both ways.

[Q] Which SD Micro memory works best for the Nook Color

I have been searching all over the place for a list of "supported" SD micro flash memory for installing and booting for example CyanogenMods CM7. I have found where people recommend not getting slower than a class 6 but not which brand works best. I am using a Patriot 4GB LX Class 10 and it seems to be doing ok but wanted to know what others were using and what kind of luck they are having.

I'm having good luck with a 4G Sandisk class 4.

Lots of discussion here: http://forum.xda-developers.com/showthread.php?t=1005633

I will add that none of my Patriot SD cards regardless of the class worked consistently or smoothly. After having a ton of weird lock ups and delays (with FC's) I bought a 2GB Sandisk Class 4 and the same exact builds worked fast and like a dream. I then bought a Sandisk 16GB and it too worked perfectly.
Half of my problems were fighting SD card performance issues. There are likely others that are good but it appears the Sandisk Class 4 are a solid starting point.

Agree with Awats
After having problems with Patriot and Kingston I have had rock solid results with SanDisk 2, 4, 8, and 16 GB all class 4. I've tried a couple of off-brand 32 GB class 10 with uniformlly lousy results. Of course YMMV.
FishDoc

I have had zero issue running Phiremod 6.2 off my 16GB Sandisk Class 4 sd (with Dalingren's 4/24 kernel, set at 1200). It has been fast and stable for more than a week. I can't wait for the new kernel that fixed the sleep/battery drain issue.

I bought a Sandisk 16gb Class 2 that works flawlessly with Honeycomb. Only $24.99 at Radioshack right now...if you hurry!

I am using a Transcend 8 gig TS8GUSD C6 with no problems . I think its almost snappier than off of the stock eMMC
s

ExploreMN said:
I bought a Sandisk 16gb Class 2 that works flawlessly with Honeycomb. Only $24.99 at Radioshack right now...if you hurry!
Click to expand...
Click to collapse
How does that Sandisk test out? I have an 8G Sandisk class 2 that tests out as better than class 10 in SD card tools. Not sure if SD card tools is actually testing right. I'd be interested to see how yours tests out.

Just some real world observations that my sandisk cards perform much better than rated, about a class higher I think. I've got an adata and a patriot (class 6 16GB) that haven't given me any issues so far, but I'll never buy another kingston (poor performance, bad cards)

ExploreMN said:
I bought a Sandisk 16gb Class 2 that works flawlessly with Honeycomb. Only $24.99 at Radioshack right now...if you hurry!
Click to expand...
Click to collapse
Drat. Last week it was the 8GB class 4 for $14.99. Ah, well - technology rewards the patient...as long as you have infinite patience. *laughs*
Rodney

rhester72 said:
Drat. Last week it was the 8GB class 4 for $14.99. Ah, well - technology rewards the patient...as long as you have infinite patience. *laughs*
Rodney
Click to expand...
Click to collapse
Radio Shack has ALL of the SanDisk cards on sale until 5/14.

I'm running a Transcend Class 6 8GB MicroSD in mine and so far it's been running great. Noticeable difference over the class 4 sandisk I had in there before.

kwyrt said:
I'm running a Transcend Class 6 8GB MicroSD in mine and so far it's been running great. Noticeable difference over the class 4 sandisk I had in there before.
Click to expand...
Click to collapse
If you're running CM7 off that Transcend, I'd be interested to know if Pulse works without FCs or other issues on yours. I ditched the Transcend Class 6 8G for a Sandisk Class 4 8G.
http://www.appbrain.com/app/pulse-news/com.alphonso.pulse

Which app are you using to test the speed?

Sandisk, 8 GB, class 4 here. The Sandisk class 4 is the way to go, IMHO.

I am using a Transcend Class 6 8GB, running fine. Will buy a Sandisk 16GB to try out.

ebubar said:
Sandisk, 8 GB, class 4 here. The Sandisk class 4 is the way to go, IMHO.
Click to expand...
Click to collapse
this.
i've tested many cards with zone bench on the mac. class 4 sandisk outperforms all the others on random read/write of small files. it also coincides with how well my sd card installs run. some cards would run ok but now and again i'd have problems, especially multiple downloads running at the same time from market. I don't have this problem with the class 4 sandisks

for honeycomb: A-Data 4GB class 6 (writes at 6MB/s, reads at about 10MB/s, got it for ~$14, cheapest 4gig class 6 around these parts)
Quite noticeably better than my previous class 2 8gb samsung I got off eBay, which I now use for storage of videos/books & cwm flashing.