Quote: Originally Posted by mbkowns
I know what mb/s is I have 2 u320 SCSI seagate 15,000 rpm in raid 0 ... I know about mb/s trust me... Your usb2.0 only at 18 is really low... some thing must be wrong there
Well, we know what MB/s are also, so why didn't you give him the answer? What speeds did each attain when you tested them?
Or did your benchmark just say, "'Sup? USB transferred your files quicker. USB owns."
I tried some simple tests to see for myself. (These were done with a P4 2.4GHz, WinXP Pro, 845 chipset, 533 FSB, 512 MB DDR333, Hitachi 120 GB 7200 rpm HD)
First, I benchmarked my Panasonic CW-8123 CD-RW/DVD-ROM on IDE, with SiSoft's Sandra. I found that depending on the DVD I tried, I get speeds from 2000 kB/s (2 MB/s) with a League of X Gentlemen DVD, to 2600 kB/s (2.6 MB/s) with a Shrek DVD. In three consectutive tests, I got 2604, 2613, and 2598 kB/s with the Shrek DVD.
Then I watched some of the Shrek DVD with Task Manager running in the background. I stopped the DVD and quickly took a screenshot of the performance graph in Task Manager.
Then I switch to USB 2.0 with
this adapter that I got at Newegg.com for US$33.
I ran the Sandra benchmark again. This time I got 2620, 2602, 2614 kB/s. I'd call that identical to the IDE speeds.
FYI, 1000 kB/s is recommended for smooth DVD playback, with no dropped frames.
Then I watched Shrek again, and took another screenshot of the performance graph. Here are the graphs:
For me, I'm good with USB2 running my optical drive. YMMV.