"When you are looking the build the best performing desktop, there is only one route to go, that's with an Intel chip. If you are looking for the best of the best Intel chip you will be looking at the latest hex-core processer, the Intel Core i7 990X Extreme. There are a number of tests today that the Intel Core i7 990X Extreme Edition processor excelled at today. Mainly anything that was heavily threaded. Anything that had to do with number crunching like wPrime or video rendering like the x264 HD Video benchmark was dominated by the Core i7 990X Extreme..."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips