Hello,

i'd like to start a thread for links to info and performance on minisd / microsd cards for the N810. Availability is rather scant for SDHC minisd in sleepy old germany, but there are some 4GB kingston 4 and 6M minisd cards available for just under 40 euro. I also see Sandisk microsd advertised to 8GB, but they never seem to include microsd-minisd adapters - are these standardized and purchaseable seperately?

Some speed comparisons:
http://www.hjreggel.net/cardspeed/sp....html#cdet-ki4
http://www.valuemedia.co.uk/minisd_speed_tests.htm
http://www.valuemedia.co.uk/micro_sd...peed_tests.htm

Since card performance seems to be dependent to the controller, N810 owners might benefit from posting data on read/write speeds for their cards here. To measure this, we could use something like:

Write:
sync; time sh -c "dd if=/dev/zero of=/media/mmc1/testfile bs=1M count=100;sync"

Read:
time dd if=/media/mmc1/testfile of=/dev/null bs=1M

edit: added kirby's suggested sync command - this should remove effects of memory write-cache

Speeds reported ranged from 2.5-5.5 MB/s write and 9-12 MB/s read.

Cheers,
(edit2 770 with 2006 stock kernel writing to Kingston 2GB rsmmc gives.... ..... ..... ..... 0.26 MB/s)

edit3: added jibane's cache flush command, echo 1 > /proc/sys/vm/drop_caches and put it all into the attached shellscript. You can download the script, rename speedtest.sh.txt to speedtest.sh and chmod u+x to make it executable. Currently it writes to mmc2 (internal) so edit the file and change the 3 occurrences of mmc2 to mmc1 to test a SD card.

edit4: add echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor to the command
thanks smd!

I was just about to make a similar thread, what i really want to know is whether a MicroSDHC card will work in the N810 using an adapter (http://www.mobilefun.co.uk/product/10533.htm).. MicroSD seems to be cheaper and i'd rather have one card i could share between an N810 and my N95

4 GB MicroSDHC with SD adapter works in N800 so one would think that it'll also work in N810.

Then again it's Micro to mini adapter that would be needed with N810, right? I just got a 6 GB microSDHC card for my N95. Might try if it works with N800 later on. I'm guessing it will.. I mean why wouldn't it

No reasons microSD(HC) wouldn't work, all 3 sizes are pin compatible and were made that way :-)

N800 came with a mini-to-full-size adapter, so hopefully N810 comes with a micro-to-mini. Does anyone know?

OK, i'm seeing people buying N810s now and NOBODY has posted info on what micro/miniSD cards they are using on them.

N810 owners: Please let us know what SD cards you are using and run the benchmarks on them!

Does anyone know what the largest MicroSD/MicroSDHC card that is supported by the N810 and 2008 OS might be?

I'm about to get my N810, and I'd like to go ahead and get a nice high capacity card for it.

curious as to which cards to get? what the largest size is and which is the fastest read/write. etc. can anyone help me out?

I tried a standard transcend 1GB microSD card in my N800 and it works. It is very difficult to take it out from the external slot, however, as you have nowhere to grab the adapter. I posted a message about that a few days ago.

MicroSD of 6GB are available from Sandisk and 8GB should be available in a matter of days. At present, 6GB microSD is the biggest storage you can buy for the N810 as no miniSD bigger than 4GB appears to exist.

I'd help if I could, but with no N810, it's pretty difficult . I think it would be worth everyones effort, if we contributed and kept this thread alive.

Can anybody help out? Simply type the following commands on the command line, and reply with the output.


I would love to know which cards are best when making my N810 and memory purchases (hopefully) towards the end of this year.


}:^)~
YARR!

Capt'n Corrupt