I currently have an Athlon T-bird at 1200 GHz w/ 256 megs of Crucial PC2100 on an AMD 761 chipset. Would it be worth upgrading to an AXP. Also, I never unlocked my T-bird but I was able to change the multiplier w/ the dip-switches on the mobo. Maybe it came factory unlocked, but I doubt that cause it was a retail box(I never really checked the L1 bridges when I installed it a year and a half ago). Think the the dip-switches could change the multiplier on a locked AXP? I dunno, maybe my T-bird was just factory unlocked, I'll have to check and see. But a 1600+ is like $70 bucks and running that at 2000+ seems like a powerful upgrade from a 1200MHz T-bird that I generally run at 1370MHz. Plus they have the full SSE instructions.