Personally I wanted to get the 400W and I called in to Circuit City ahead of time and they said they had it. So I go in to pick it up and all I see is a 300 and 350W and the guy said he must have been looking at the 300W. So I figure a 350 should cut it as the PSU calculator said I needed around a 330W. So I get it here and I turn it on and everything is fine, I put the side back on and plug in the side fan with LEDs and BAM, I get an error upon trying to get into Windows. Try again and Windows just hangs at the loading screen. So I unplug the side fan and power it back on, it's up and running again. A measly little 80mm fan is putting me over my limit? Specs in sig.