I've got my athlon thunderbird clocked at 1266 on windows xp, and it does a wu in about 5 hours 30 mins... I also have my dad's pentium III 1ghz running it on windows 2000. It does a work unit in about 6 hours 20 mins. I also rebuilt my older celeron computer (abit bx6, Iwill sloket II, celeron 2 566, 256MB ram, win2k), but it only wants to clock up to 637! It used to do 850 with my old msi sloket, but that one doesn't work anymore.. Anyway, it takes it like 12 hours to do a work unit.. I was wondering if linux or beos or any os was faster at doing seti... if so, I'll format it and put it on in a second, we have to win 🙂.