I noticed that you used a 1,000 watt psu for your dual quad core test build. Was this choice primarily due to Tyan recommending this psu or did you expect your configuration to require that much power? I'm curious because I have a similar board (the i5400pw) and prospective build (the only difference is I will be using a little more RAM; most likely closer to 32gb)and want to make sure I will be properly powering it. I won't be doing any hardcore gaming or anything video intensive but I will be utilizing the cpus for memory heavy calculations that will be running 24/7 for extended periods of time. I suppose the only reason I am even considering the issue is the potential extra heat/cooling issues that might come along with a very large psu.