New system with Seasonic's new G-360 80+ Gold power supply! (not the one I said I'd do - I settled for this one instead). Loving it so far - so quiet.
http://www.seasonicusa.com/G-series-360.htm
Using efficiency of 89.7% for 40-60% load average from
HardwareSecrets review (should be more like 87% efficient at low loads, but we're using the same value here)
The processor is undervolted at -0.1V for now. I have a 4.3GHz profile that I'll test later - just haven't had any need to run it at that. The card is currently at stock, factory-overclocked ASUS DCII GTX 670 TOP.
i7 3770 @ 3.9GHz @ -0.1V offset . ASRock Z77E-ITX . (2) 1.45V Memory . (1) GTX 670 @ 1058-1220MHz @ 1.175V . (1) HDD . (1) SDD . (3) ~5W Fans . Seasonic G-360 SSR-360GP 360W @ 89.7% Eff.
Max Values:
Idle (screen off) : 47 Watts. -> 89.7% =
42W
Idle (screen on) : 50 Watts. -> 89.7% =
45W
Prime95 Large FFT : 115 Watts. -> 89.7% =
103W
Furmark Burn-In Test : 243 Watts. -> 89.7% =
218W <-- this is lower because I forgot to disable Lucid Virtu for FurMark
OCCT GPU stress test : 235 Watts. -> 89.7% =
211W <-- Lucid Virtu assistance, full utilization for 10 minutes
Prime95 Large FFT + Furmark : 255 Watts. -> 89.7% =
229W <-- with Lucid Virtu on for FurMark, so lower power consumption
Prime95 Large FFT + OCCT : 292 Watts. -> 89.7% =
262W <-- max consumption after 10 minutes of running both simultaneously, without Lucid Virtu
Game (WoW) : 185 Watts. -> 89.7% =
166W <-- typical not-too-demanding game
Game (GW2) : 250 Watts. -> 89.7% =
224W <-- very demanding game
Browsing the web : 72 Watts. -> 89.7% =
65W
So yes, my 360-Watt power supply is small but mighty! Going to add 2 more fans and a fan controller next week (already added to the profile system, but they'll be installed next week!)
Even though Kill-A-Watt measurements are not entirely accurate, I know my PSU isn't stretched to the limit, because during those stress tests I did not hear its fan kick into the max RPM. It's supposed to get very noticeable at max-RPM, corresponding to max load, which never happened (the fan RPM for this PSU is tied to load, not temperatures). I believe I got to moderate loads, but not close to max, so I'm inclined to believe those numbers. The PSU runs very cool. As my CPU and GPU were around 70C during stress tests, the air blowing out of the PSU was cool.Edited by ElevenEleven - 9/17/12 at 12:14pm