I have a build similar to your and love it. The Intel MB is great! I have 8Gb of Corsair RAM and a ASUS 5870.
XPS8000 case ,
Intel DP55BS MB, i7 email@example.comGhz w Zallman 9700 cooler,
Intel X25MG2 SSD,
ASUS EAH HD5870,
8GB 1600 Corsair XMS Dominator,
Ultra Gold 550,
Win7 x64 Ultimate