Database Develop

SDCard Write speed?

I recently upgraded my class 2 card to a class 6 card and noticed when writing a rom to the SD root the speed is the same speed (around 1.75mb/s)?
I'm doing this with the SDCard in the phone and a usb cable.
Also my class 6 is a Adata 8gb class 6, and my class 2 was a SanDisk 2gb.
Would this be the hardware limiting (g1) or something else?
Fwiw when rooting a buddies mytouch3g and his class 4 card it would write much faster (~3-4mb/s).

The speed did increase but it is also having to look through 2x the amount of data as well. I read this somewhere, and I am also Googling it now as we speak to come up with a reference link for you. Basically if you have a 2gb card that's class 2 and class 6 you are going to see a speed increase on the class 6 card, but, if you go from a 2gb class 2 card to a 6-8gb class 6 card, you are not going to see much of an increase if any at all due to the increased size and the time it takes to write data over the card. This is a fragmentation issue as I read it.
Please, don't take this as 100% fact, just something I read when I did my research about 4 months ago.
Hope that helps

Digitaldreamer7 said:
The speed did increase but it is also having to look through 2x the amount of data as well. I read this somewhere, and I am also Googling it now as we speak to come up with a reference link for you. Basically if you have a 2gb card that's class 2 and class 6 you are going to see a speed increase on the class 6 card, but, if you go from a 2gb class 2 card to a 6-8gb class 6 card, you are not going to see much of an increase if any at all due to the increased size and the time it takes to write data over the card. This is a fragmentation issue as I read it.
Please, don't take this as 100% fact, just something I read when I did my research about 4 months ago.
Hope that helps
Click to expand...
Click to collapse
well that sucks lol
but you are saying if we go from Class 2 8 Gig to Class 6 8 Gig, there will be a increase?

Sorry guys but your theories are way off=p It's the USB cable thats at fault. Either get a better USB, or put it in a mircosd card reader and you should see speeds roughly at 10mb/s write and 20mb/s read (at least those are mine with a samsung class 6 from amazon=p)
PS: Who ever heard of a 6gb sdcard? they come in exponents of 2: 2, 4, 8, 16, 32, 64, 128, 256, 512, 1,024, 2,048, 4,096, 8,192, 16,384, 32,768....
yeah I'm pretty darn bored if you can't tell....

I pulled the card out and put it on a card reader and it would write about 9-10MB/s, but still only 1.5-1.75MB/s though the G1 (usb mounted).

It's the usb that is limiting you (I think). Think of it as filling a pool with a 12-inch fire house that is running through a funnel=p. Try a different USB cable.

mejorguille said:
It's the usb that is limiting you (I think). Think of it as filling a pool with a 12-inch fire house that is running through a funnel=p. Try a different USB cable.
Click to expand...
Click to collapse
I'm using the same cable for both the G1 and the card reader. I assume its just the G1s USB driver/transfer protocol thats causing the issues.

Can the HD2 benefit from class 6 SD? Or is it a bottleneck >Class 2?

I ordered a class 6 16gb card to replace the slow-ass class 2 8GB card I had in my HD2.
First of all I couldnt find the format sd tool in my energy rom (1st July) so I had to format the card using vista while the HD2 was connected in disk drive mode. THAT TOOK OVER 1 HOUR.
(Is there a cab file to install the "Format SD Card" tool for the newer energyroms?)
Anyways after formatting (Fat 32, 16KB cluster), I started to copy my 1.4GB sd backup file to the card using the same method as above (disk drive mode)....
My maximum write speed was 2.7MB/sec. Average 2MB/sec.
Class 2 speeds????
After restoring the backup, which took forever, I ran spb benchmark on the card and was gutted to get slightly lower results than the old class 2 I was replacing.
Can the HD2 make use of anything faster than a class 2 card?
Has anyone here tested a class 6 or even 4 card and found good write speeds (~6MB/sec, or ~4MB/sec)?
Does it sound like I have bought a lemon (class 2 labelled as class 6)?
I have spoken to the seller and he is adamant that they ARE genuine class 6. Reckons he tested some of the batch in TrueHD cameras which will not accept <Class6. Seems genuine and some of his feedback states that the cards are Genuine class 6. Which leads me to think that the bottleneck could be the HD2... Does that sound likely?
I'm waiting for a microsd USB reader to arrive so I can test the card outside of the HD2, but Until I can do that... can anyone tell me if a class 6 is wasted in a HD2?
The strange thing is that when browsing photos/wallpapers etc, the thumbnails ARE loading maybe 3x quicker than my old class 2. So I'm pretty confused about this one.
Can anyone shed any light here? Feel free to post benchmark results/screenshots etc.
Thanks in advance.

can anyone PLEASE answer this ^^^?
Is there any point having a class 6 card in the HD2 instead of a class 2 or 4 card?

there is a thread in the accessories section have a gander in there, I no this is Q&A's but lots of talk about mem cards in the accessories section mate

Cheers mate, I'll take a look.

I will move this thread there. I also recently bought a Class 6 card and and have seen a huge improvement in media reading and over all performence.

I get 4-5MB/s both for reads writes with my 16GB class 6 card in disk drive mode.

Thanks zelendel and kilrah.
kilrah said:
I get 4-5MB/s both for reads writes with my 16GB class 6 card in disk drive mode.
Click to expand...
Click to collapse
That is exactly the kind of data I'm looking to compare.
Whith my 'class 6' Im getting just under 3MB/S WRITE and under 6MB/S READ when using the HD2 in disk drive mode.
If I use the card in a USB 2.0 reader I can get around 5.5MB/S Write and ~11-13MB/S read.
Based on this alone would you say my card is a class 6 or not. I'm beginning to think it may be a class 4 re-labelled.
Picture browsing etc is faster with my class 6 but all benchmarks indicate it is identical speed to my genuine Kingston Class 2.
What do you guys reckon, Should I send this card back for a refund???

Well if you're getting 5.5 and over 11MB per second with a card reader then we can safely assume it's class 6. The bottleneck is something to do with the phone, rom, cable or simply the phone doesn't like this particular card etc...
EDIT: Test your class 2 card with the memory card reader and see if you get similar results.

ez2remember said:
Well if you're getting 5.5 and over 11MB per second with a card reader then we can safely assume it's class 6. The bottleneck is something to do with the phone, rom, cable or simply the phone doesn't like this particular card etc...
EDIT: Test your class 2 card with the memory card reader and see if you get similar results.
Click to expand...
Click to collapse
Thank you for helping me clear things up.
Comparing the 'class 6' and the 'class 2' transfer speeds is where I really get confused here.
Transferring a ~700MB .Avi to and from SD using a reader:
Kingston Class 2 8GB:
Read 12.5MB/s
Write 5.4MB/s
Unbranded Class 6 16GB:
Read 12.5MB/s
Write 6MB/s
So, from this, would you say its safe to assume:
1. The class 2 card is a good one, performing at almost class 6 speeds.
2. The class 6 card is 'Genuine' and shouldnt be returned.
3. There is a bottleneck when using the HD2 as a card reader/disk drive. I should be getting more than 2.5mb/s write speeds in this mode.
4? Does 12.5MB/sec sound close to USB 1.1 speeds? could my reader or even USB port (Vista laptop) be another bottleneck?
Once again thank you for helping me make sense of all this.
At least I now know that the 16gb card doesnt really need to be returned.
Can you give me your oppinions on the above?

Well class 2 means you should be getting a minimum 2MB/s speeds and class 6 means you should be getting a minimum 6MB/s.
Seems like you have a very good class 2 card.
More info here
http://en.wikipedia.org/wiki/Secure_Digital
Your class 6 is performing to spec.
Personally I would never buy an unbranded card but that's me. A branded card may perform better than there class rating e.g. Your Kingston brand I've always used Sandisk personally...

I've just managed to drum up enough funds to get myself a HD2 and now looking to upgrade my HCSD card to 16GB. To get the "right" class I tried to find the spec on the SD interface but I cannot find anything and the best data I can find is that I shouldn't waste my money on unbranded devices, I would always buy a SANDISK device for something I relied on! For data and communication!
People seem to get appropriate speeds for the class of device they have, if they are branded and sometimes if unbranded. However, there doesn't seem to be anything better than class 6 results debated or given. Is it a VERY rash assumption that the fastest the HD2 interface can go is Class 6?
Chris

Does this mean its not worth getting 32gb cos its a class2
& theat would make the phone slower cos lot more stuff on it
& will take more loading time & play Videos lagy ?
anyone useing 32gb ?
Thanks

My experience was positive with higher class micro SD.
At first, I used 8GB micro SD bundled with my HD2 and didn't notice improved loading speed. Later, I changed it with higher class one, same 8GB, with same manufacturer, Sandisk. Higher class one has name "Ultra" on it. Now with changed SD, loading became WAY faster. "Wow" I realized the higher speed of CPU of HD2.
My 2 pennies.

NEVER EVER buy unbranded memory cards!
Keep an eye on Sandisk cards only and even prefer them to Transcend and Kingston.

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

[Q] About SD Card

Hello
I got my Legend about 2 months ago, and I have a big problem with storage space...
What is the biggest sized SD card the Legend can use?
What is the type of SD card (micro, mini, etc...)
What is SD card class?
Thank you very much

microSD compliant with SD2.0 Standard (aka microSDHC)
The biggest size available currently is 32GB.
I don't know if even more is possible with microSDHC or if bigger cards will only be possible with SD3.0 (aka SDXC) but that question is not relevant as you can't buy any greater then 32GB yet.
The Class of the SDCard is a measurement for guaranteed minimum speed in random read/write.
The Class does not provide any information about real-world speed or max speed.
For your mobile phone the class is a pretty useless criterion as you don't need any guaranteed minimum speeds but good overall speeds ESPECIALLY sequential.
The guaranteed minimum speed is important for HD Video Cameras for example where you write data all the time at a given speed (resolution).

thanks.
but I DO need class with high speed because I want to use Data2Ext...

Don't pick uSD card based on class !! class tels you MB/s for sequential write only... you need a card that is overall fast, I had 16GB class 10 Kingston and data2ext was just horrible!
Now I'm with class 4 Sandisk mobile ultra and it is in fact faster in every test I ran...
So read reviews before you buy

ye but that is exactly why im asking...

well then, I recommend sandisk mobile ultra as I have it and it is OK, there are probably faster cards...just see the small files read / write speeds in reviews those are of greatest importance

i purchased a kingston 8GB class 4 which crapped out. android kept reported sdcard unexpectedly removed. tried all sorts (formatting in windows, android, quick, long, etc).
RMA replacement did exactly the same, so i'm guessing kingston class 4's are best avoided.

If I recall correctly I have a 16GB microSDHC Class 4 card. After applying data2ext with this card, my Quadrant scores hit around 1500, which is crazy.
This is where I found my card: http://www.amazon.co.uk/SanDisk-16G...P06K/ref=sr_1_1?ie=UTF8&qid=1298984123&sr=8-1
I personally recommend this card.

witch is better class 4 or class 6?

r69001 said:
Hello
I got my Legend about 2 months ago, and I have a big problem with storage space...
What is the biggest sized SD card the Legend can use?
What is the type of SD card (micro, mini, etc...)
What is SD card class?
Thank you very much
Click to expand...
Click to collapse
Did you by any chance go to HTC's website to read about the phone? It has the full specs listed..
Sent from my Legend using XDA App

dangal said:
witch is better class 4 or class 6?
Click to expand...
Click to collapse
class 6 is better , but class 10 is even better

I've got a Sandisk Ultra Mobile 16gb SDHC which works fine in the Legend. Make sure you format it with the phone to stop it being dismounted, well known issue and the fix

Nook Color microSDHC speed class question

I very recently got a NC, and I've tried running both Froyo and Gingerbread from the microSDHC card. I'm using a Class 4 card, and I noticed that both seemed to lag quite a bit. Do you guys think I'd see a difference if I used a Class 6 or Class 10 card? Thanks!
--Adam

I think the most important question, is what brand are you using? The class ratings might mean something if they were enforced, but the sad fact is that they are not, which leads to lots of cheap, crappy cards out there.
I have a Kingston class 4 that barely makes class 2 speeds, and an 8GB Sandisk class 2 that falls between class 6 and 10 (in real world speed). If you get a GOOD card, running Froyo/GB from it will be smooth as butter (Running the posted custom Froyo on my Sandisk, and it is as fast as the stock ROM on the eMMC).

I believe the class number corresponds to the cards base transfer rate. For example class 4 is 4 mb/s, where class 10 is 10mb/s. Depending on the brand and how much you spend, class 10s can go even faster than 10mb/s. This is a significant difference, but I don't know how much it will actually affect the real performance of NF and HC on SD.
I just ordered a class 10 to see this for myself because I originally tried it on a class 4 card as well, and wasn't happy with it. I will post again when I try it.
Sent from my SCH-I500 using XDA App

I don't have the device with me (at work), but I think it's a Kingston, and I know it's Class 4
Divine_Madcat, would you recommend the Sandisk?

Is there a utility that people are using to TEST the speed of their micorSD cards, or are you just monitoring the transfer rate when moving files?

ovar said:
Is there a utility that people are using to TEST the speed of their micorSD cards, or are you just monitoring the transfer rate when moving files?
Click to expand...
Click to collapse
Good question, I'd be interested in knowing this also.

niphoet said:
I don't have the device with me (at work), but I think it's a Kingston, and I know it's Class 4
Divine_Madcat, would you recommend the Sandisk?
Click to expand...
Click to collapse
Very much so, yes. I am very displeased with my Kingston, after seeing how much better the Sandisk is. You will also be able to find lots of other happy Sandisk users here (And unhappy owners of other brands)..
ovar said:
Is there a utility that people are using to TEST the speed of their micorSD cards, or are you just monitoring the transfer rate when moving files?
Click to expand...
Click to collapse
niphoet said:
Good question, I'd be interested in knowing this also.
Click to expand...
Click to collapse
There are plenty of free drive benchmarks out there, but my real world tests are good enough for me. When i use either dd (linux) or the windows image burner for creating/backing up my Froyo images, i get a very solid indication of my transfers.

Divine_Madcat said:
There are plenty of free drive benchmarks out there, but my real world tests are good enough for me. When i use either dd (linux) or the windows image burner for creating/backing up my Froyo images, i get a very solid indication of my transfers.
Click to expand...
Click to collapse
Great thanks for the TIP.
Also, it may be beneficial for folks to post MicroSD cards they have had good performance with. Maybe get a core collection of solid SD cards for the Nook.

Divine_Madcat said:
Very much so, yes. I am very displeased with my Kingston, after seeing how much better the Sandisk is. You will also be able to find lots of other happy Sandisk users here (And unhappy owners of other brands)..
There are plenty of free drive benchmarks out there, but my real world tests are good enough for me. When i use either dd (linux) or the windows image burner for creating/backing up my Froyo images, i get a very solid indication of my transfers.
Click to expand...
Click to collapse
That's how I've tested mine but awkwardly have two 4gb sandisk sdhc class 4 an one gets 9-10mbs other gets 3-6mbs.
In market there is a benchmark for sd thats free (can't think of the name) but I believe the nook only manages 3-6mbs r/w no matter the SD.
sent From a NC on eMMC Froyo

ovar said:
Great thanks for the TIP.
Also, it may be beneficial for folks to post MicroSD cards they have had good performance with. Maybe get a core collection of solid SD cards for the Nook.
Click to expand...
Click to collapse
I've had great luck with the Kingmax Class-10 from buy.com so I bought 4 more 4 GB ones to keep test images to run from on...
http://www.buy.com/retail/usersearchresults.asp?querytype=home&qu=kingmax+sd&qxt=home&display=col
Was getting 14+MB/s write speeds, 20MB/s read when copying card to card using usb adapters... and got 2000+ quadrant scores running both 2.2 and 3.0 images from the sdcard w/1.1GHz kernel...

camwinnn said:
but I believe the nook only manages 3-6mbs r/w no matter the SD.
Click to expand...
Click to collapse
Really? That sucks.

niphoet said:
Really? That sucks.
Click to expand...
Click to collapse
I believe so, the benchmark (J disk) isn't free anymore but just try dragging over some movies or something big from the PC to the SD via nook, could just be mine but I saw others in irc talking about it.
sent From a NC on eMMC Froyo

the card i am using is a patriot 8gb class 4 i got from newegg. when i boot froyo, its extremely slow, and unresponsive. i do not reccomend. unfortunatly its the only sd card i have that actually booted the os.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820220523

john10101 said:
the card i am using is a patriot 8gb class 4 i got from newegg.
Click to expand...
Click to collapse
Among the many cards I've tried I had the 16GB version of that (class 4) card. The Sandisk 16GB (class 4) I got bested the Patriot and oddly some others that were supposed to be Class 10. It was the only way I got Froyo and especially HoneyComb to run reasonably.

I just downloaded the app System Benchmark on my Evo and tested the Class 4 Sandisk in there:
Write: 7.1 MB/s
Read: 10.6 MB/s
Not too shabby at all, I think when I get home this baby is going in the NC.

niphoet said:
I just downloaded the app System Benchmark on my Evo and tested the Class 4 Sandisk in there:
Write: 7.1 MB/s
Read: 10.6 MB/s
Not too shabby at all, I think when I get home this baby is going in the NC.
Click to expand...
Click to collapse
It should run it amazingly. My SD gets 7.4 write, and 12.x read, and Froyo on it runs as smooth as elcair does. It has really become my daily driver.

On my Kingston class 6 I get 9mb/s write, on my Sandisk class 4 I get 3mb/s

I just installed System Benchmark from AnTutu also to have a dollars to dollars comparison and on my KingMax 4GB Class-10 in the NC running HC I get 9.9MB/s write and 18.5MB/s read... running the complete test takes forever though it seems...

MXIIA said:
On my Kingston class 6 I get 9mb/s write, on my Sandisk class 4 I get 3mb/s
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Well, at least that's the expected outcome considering the Kingston class is higher. The sandisk class 4 card I have gives me ~ 5-6 Mb. If it's true that the NC can't benefit from more than 6 Mb then I won't ever need anything better.

I found with both my Kingston 4GB class 4 microSD and Kingmax 8GB class 10 microSD that the nook runs laggy. When I run Froyo off of the internal memory, it runs fabulously.
For reference, I got about 6MB/s on my Kingston Class 4 and 11MB/s on my Kingmax class 10. This was on my PC of course, I didn't test the speeds from then nook, but only noticed it lag and crash more often (compared with internal memory).