i without much thought got a 650 watt gold (nearly plat) power supply thinking some game instability might be due to the PSU (Fury on a 520 watt M12II (about 390 watts CPU+GPU load))... one thing i DID notice is my power consumption drop by 30, maybe 40 watts at full (but not prime/furmark) load

has anyone else gone for a gold or better PSU? if any of you have multiple GPU crunchers, that could add up over time...

for example, 100 watts/month for me is about $5.60/mo (at 7.7 cents/kwh, if i'm doing my math right), so paying maybe $20-40 more for a PSU more efficient than bronze will definintely pay for itself in probably less than 1.5 years (plus you usually get longer warranties)