愛用小筆電（二）—工人舍筆電短時間試玩 {Engadget Chinese}

Feb 4th 2008 9:32AM 回一樓
不過CF的後代HDMA就不慢了，這也是為什麼高階DSLR要衝連拍速度會選HDMA的介面而不是SD或SDHC。

UDMA Mode 0: fastest read rate 16.7Mbyte/sec
UDMA Mode 1: fastest read rate 25.0Mbyte/sec
UDMA Mode 2: fastest read rate 33.3Mbyte/sec
UDMA Mode 3: fastest read rate 44.4Mbyte/sec
UDMA Mode 4: fastest read rate 66.7Mbyte/sec
UDMA Mode 5: fastest read rate 100 Mbyte/sec
UDMA Mode 6: fastest read rate 133 Mbyte/sec
寫入速度約3/4。

SDHC(SD 2.0) 4~32GB
Class 2: 2MB/sec
Class 4: 4MB/sec
Class 6: 6MB/sec
SD < 4GB
1.0 12.5MB/sec
1.1 25.0MB/sec

註：USB 2.0的速度上限是60MB/sec，IEEE 1394b[FireWire 800]的速度是98MB/sec