I just would like to say I have an Athlon 64 4400 with 3G DDR400 ram and an ATI X1800XL AIW and 1 Terabyte spread among 6 drives and I have been running Vista since the first Beta in 2006 and the improvements in the OS have been phenominal. I am dual booting to x86 and x64 and almost exclusively use x64 now. All my periphials work including two old printers (HP LaserJet IIIP and HP 1210 AiO) The only!! problem I have been having is moving files around. But I hear that will change soon I use my computer at least 14 hours a day and the biggest improvemt I have liked is rendering video to DVD now only takes 2 hours instead of 4.