I've been impressed with the quietness of it. I normally have it running with the fan switched on as it's so quiet. When gaming, which draws about 630W, the fan doesn't appear to speed up at all and stays running at the same speed it does when the PC is idle. That's for over an hour in an 17-18ÂșC ambient so it's possible the fan might speed up with higher ambient temps. I measured the air temp from the back of the PSU in the low to mid 40s under that load.
post #91 of 625
6/18/12 at 2:17am

![Intel(R) IPP JPEG encoder [7.0.1041] - Jul 19 2011;](http://cdn.overclock.net/1/1a/50x50px-ZC-1ace0809_Picture134.jpeg)






















Based on the fact that in hybrid mode the fan would not start to spin until ~30% load, this means that at least when the machine will be at idle the PSU will contribute zero noise.