i have scoured the net about performance differences with hyperthreading on and off...some say ya, some say no...seems to me that maybe overall it might perform better with it off...anyone agree?....i turned it off and my benchmark stayed the same, but i read once that i need to reinstall winxp...my benchmark reported that it was off...so do i still need to reinstall to get a real effect? does anyone else get improvements overall with it off...i understand how it works n all but alot of sites say turn it off and some with benchmarking software say dont

It does help, especially with programs that video edit, and also it helps bit time with multi tasking.

You do not need to reinstall Windows XP, just make sure you see "ACPI Mutiprocessor PC" in yrou device manager under computer.

If you don't see it then use the update driver feature. should pick it up