Praetor, how the hell do you get your 3500 upto 2550mhz? if i even dare to try and surpass the 2400 barrier it either wont boot, or itll run and ill get the bsod soon thereafter, or ill get a memory error of some kind. I up the voltages to like 1.65, even 1.7 for the cpu. Should i tweak the memory too or just leave it all on auto, since it must oc the memory somewhat already if u crank the fsb. My mb lets me raise the pci bus speed manually too but i havent a clue whether to touch it or not. Youre running at like fx55 speeds almost, i need your skills 
