I was gonna get a x48 chipset board but then I was told that the P45 boards are a lot better for overclocking quad cores.
Did you find that the X48 was impossible to OC or that it did it inefficiently?
I don't know I never got one. Someone on here just told me they don't OC 45nm Quad chips as well as P45 boards. I'm sure you'll still be able to get a fair bit of extra juice out of it though.