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It's not a very good unit, EVGA has some that are excellent and some that I wouldn't put into a gaming system. And I'd rather have a well built 550W unit over a 650W/750W low quality unit. If you want a 650W then go with the 650W version of the Seasonic Focus Gold I posted above, remember your PSU is the most important part of your build and a junk unit can not only destroy your parts but some have been known to catch fire.