QUOTE(usasma @ Jul 24 2006, 07:05 AM)

I've done a bit of reading on this for Vista (the ReadyBoost feature) and have come to the conclusion that it's the Read and Write speeds that are considered critical for this type of operation.
I've tried it on Vista with a 1 gB USB drive and didn't notice any significant improvement. So I bought a 2 gB USB drive by the same maker and Vista wouldn't accept it (FYI - it was SanDisk).
Most of the arguements against this are that USB Flash drives aren't that much quicker than current hard drives - so there won't be any noticeable difference.
I am waiting for the extensible RAM chip systems that allow you to run 4 gB of RAM as your swapfile (and for even larger one's so that I can boot XP/Vista off of them!). But it's still way, way too expensive!
I just brought a 4GB USB flash drive from AMAZON for £22.40 including P+P
This is readyboast compatible and has U3 Technology in it (SanDisk)