PSU requirements, no discrete GPU

jaydee

Diamond Member
May 6, 2000
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Reading through the AT review on Ivy Bridge i7-3770k preview:
http://www.anandtech.com/show/5626/ivy-bridge-preview-core-i7-3770k/10

I see that the power consumption under load for the whole system is under 130W. If you're only using the on-chip graphics, not overclocking, is it true that you'll only need about a 200W PSU for a top of the line non-gaming system? Even taking into account degradation, ineffiencies and and extra HD's, would you ever need more than a 250W PSU?

It seems that there aren't many higher quality PSU's under 400W, and I've heard it's not good for efficiency or longevity to run under 33% load. A 400W PSU would almost never touch that kind of load and spend most of it's life around 20%. What is the best way to go in this situation?

I almost feel that most PSU's need a second power connector to plug in your monitor at the same time in order to justify anything more than 350W for a non-gamer.