On Wednesday 09 May 2012, Arnd Bergmann wrote:
On Tuesday 08 May 2012, Michael Hudson-Doyle wrote: We also know that Samsung has caught up recently and is now making excellent controllers even for their "essential" series cards -- these behave much better than anything else I've tested before (except eMMC and actual SSD drives).
A quick follow-up on this:
I've found another sample of 8GB Samsung "Essential" microSDHC from 2011. This one was rather bad, in fact worse than the 4GB one that I had tested before.
The samples I have for samsung are now
4 GB microSDHC "Essential", MB-MS4GA, manf. 11/2011 => rather bad 8 GB microSDHC "Essential", MB-MS8GA, manf. 11/2011 => rather bad, worse or same as 4GB 8 GB SDHC "Plus" Class 10, MB-SP84GA, manf 6/2011 => pretty good, better than most 8 GB microSDHC "Plus" Class 10 MB-MP8GA, identical to SDHC model 32 GB microSDHC "Essential" Class 10 MB-MSBGA, three samples, manf 12/2011 and 1/2012, best cards ever
I can always need more samples. If anyone has Samsung cards at hand, could you send the output of "tail -n 100 /sys/block/mmcblk0/device/* /proc/partitions"?
I would definitely recommend the Samsung "Plus" models now for 8GB, and the "Essential" 32 GB model, but there is no sample for the 16 GB model yet. If you have a 16GB "Essential" card, I'd love to see the output of "flashbench --open-au /dev/mmcblk0 --open-au-nr=2 --blocksize=3072 --erasesize=$[6*1024*1024]" and "flashbench --open-au /dev/mmcblk0 --open-au-nr=30". WARNING: that test overwrites data on the card.
Arnd