A year ago I managed to put these together :
Mobo : Asus Rampage II extreeme
CPU : I7 950 Blumfield @ ~3.6 ghz
GPU : ATI 5970 2 gb ddr5
Ram : 6 x 2 Patriot 1333 (triple channel)
PSU : 1200 w chieftec.
Storage: 4 X 1 tb.
CASE : Thermaltake VI with Xpressar cooling (freon cooling)
Problem is very weird. After a proper shutdown, computer wont react to power on button; doesn't get any of the voltages (chipset would light-up). I wait a couple of days without power cord in it and when I plug it in it works normally for a week or so, then I find it switched off...
It sounds like PSU problem, but PSU works without problems outside.
There are no PCI devices in the buses;
If PSU is the problem, what sort of minimal PSU wattage would you try (and install) in this beast ?