Main box: 133MHz FSB/ 1.75 vcore --- Athlon (T-bird) 1.4 File Server: 100MHz FSB/ 1.65 vcore --- Duron 800MHz Botched modded system: 133MHz FSB (had it at 140MHz) /1.75 vcore --- AthlonXP 2000+ P4 boxen: 100MHz FSB / 1.50 vcore --- P4 1.6A These CPU's have all been OC'd at one point or another. I am gonna flash a newer BIOS for my main box to give me some multiplier adjustments since the FSB adjustment blows chunks. I think I'll be able to run it at 1.5 pretty easily since I've had it up to almost 1.6GHz on other, more OC able boards.