Thread: SDHC kernel updated - mk3
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Milhouse is offline Milhouse
2007-03-12 , 17:30
Posts: 3,401 | Thanked: 1,255 times | Joined on Nov 2005 @ London, UK
#3
Fanoush - I've got similar results when comparing high-speed and low-speed cards, though I'm not sure why there is such a difference between the 8GB and 4GB Transcend cards, they're seemingly identical other than capacity however the higher capacity card is significantly faster on reads.

Code:
Test: time dd if=/dev/mmcblk? of=/dev/null bs=8192 count=30000
Speed in bytes => 8192*30000/time
Speed in Mbytes => 8192*30000/time/1024/1024

Card	               Clock    Width     Time       Speed        Slot
1GB SanDisk RS-MMC     20Mhz   1-bits   107.29    2.18MB/s    External
4GB SanDisk SDHC C2    25Mhz   4-bits    31.41    7.46MB/s    External
4GB Transcend SDHC C2  48Mhz   4-bits    25.72    9.11MB/s    Internal
8GB Transcend SDHC C2  48Mhz   4-bits    19.54   11.99MB/s    Internal
Last edited by Milhouse; 2007-03-12 at 17:46.