Take a look at this months System Builder News post that went up this morning. You might be able to take some good idea's from it, then just switch the SLI 460's out for a single 6970 or similar and swap the Motherboard for the GEN3 listed in the post above.
The Gen3 has a great feature set, ill replace my MB with that.
i'm unsure why i need to go from 600W to 650W on my current build, it looks like THW didnt have any problems SLI'ing 460's which most likely has a greater power draw than a single 6970. i only say this because the 600W corsair is cheaper.
Sorry tom's hardware but this month's build are bad! I just want to say that
I have to agree, somewhat.
I was disappointed to see SLI 460's being used, and disappointed to see mATX motherboard in there as well - especially as its more pricey than the ASRock Extreme3 Gen3. While it might provide the best performance now, there's really no where for the build to go after that. It was obviously build for a single purpose (to get the best performance for right here right now - which i guess is the whole point, but still....)