Slow USB copy using a newer PC compared with an old

[yadda]

I have a PC with a Asus p4b800e/P4 2.8C combo using the newest firmware drivers on the Motherboard and Windows XP SP2. Another machine is an old P2-350 (most likely with USB 1.0) running Windows ME. When I copy 170 MB of data from the hard drive to a Lexar USB thumb drive it takes easily 2-3 times longer on the newer box. Any ideas???

Thanks

Y

 

[Cheetah8799]

turn off virus scanner, in case it auto scans the usb drive.
maybe try different usb ports.
monitor the cpu activity as well, just to see what it does.

 

[yadda]

I am already running NAV on both both boxes. But as an experiment I did disable it on the newer box. - No difference.

CPU is pretty much nil.

Y

 

[VirtualLarry]

Wierd. Perhaps it was faster the first time, because the drive was previously un-used, but copying large files the second time, requires the drive to internally erase/pre-format the sectors, causing a delay before they can be written to? Does the drive likewise differ in read speeds between the two machines? You can use HDTach 2.61 to test.

 

[zephyrprime]

It really sounds like you went from usb 2 to usb 1 even though that seems unlikely. Check to see if you ports are actually 2.0 and measure you actual speed.

 

[yadda]

Any idea how to measure USB port performance???