"Not much use to you, but i have not experienced any slowdown problems on my quad with 4gb.Though this is with 64bit Windows 7.How much junk is being loaded at startup? (run->msconfig->startup tab.)I am forever having to remove various 'quick start' applications from that list.what is more grating is that every time there is an update for java, quicktime, acrobat, etc. their quick starter gets reintrod" . . . .