So, this time it's been even more funny here, my rig

Intel Core i7 960 @ 4GHz
3 x 2GB Kingston HyperX 1333MHz 7-7-7-20
2 x Sapphire Vapor-X 5870 in CF with 10.3
Intel X25-M 160G G2

No overheating issue at all. Why the banana can't I get just above 50fps like the others running a single card?