Hi! This is a bit of a overlap-thread but I thought it might fit in here quite nicely. The connected thread is here. Anyway, so I want to get a system, which core components are HD4890/core i5-750 2.66ghz/ga-p55a-ud3/2x2gb ddr3 1066 mhz; notice, the PSU is missing (mr. obvious ) I've been looking over the net and considering my very tight budget, I was thinking of a Corsair 400W 12CM ATX12V2.2 80+, but I am not sure whether it will suffice. All I could find out there was that a Corsair 450w would be "sufficient" as long as I don't have a multi-gpu-RAID-super-OCed-giant, which I obviously do not have. Hence, the 400w. So, please, is this ok? The PSU is the only obstacle now - I obviously do not want to make a wrong shot here. A unstable system is the least I wanna have (been there and it is not a good place). thanks!