naa it would b fine mate, many ppl use that board with mach II's but jus b aware that the ic7-max3 reads temps pretty high, so dnt straight away think u ave a contact prob.
ye v.true. phil u managed 2 improve ur 3dmark score yet? does overclockin ur card really give u that much of a improvement in 3dmark01, as ive got 22,600 with my xt @ stock