that setup sounds pretty good, i have the 750i motherboard from EVGA and it works fine, quad core... i'd recommend 8 gb of memory just because it's cheap right now and that would give you a bit extra (i would imagine wotlk will take more memory than bc so it's best to be prepared). also, look at the geforce 9 series, they have the smaller processing tech than the 8 series which should mean less power consumption, less heat, and better performance. you can get good deals on 9800's