GPU power consumption (Do I need a new PSU?)

I've got the best family in the world. For my birthday I received one of these (the 4 gig if it matters)
Even though I had requested one of these
No problem right? Better card, still didn't have to buy it myself. Win Win?
not so much.

Issue is I'm not 100% sure my PSU can support it. I picked up
this last may and it appears to meat the wattage requirement, but I can't seem to find anything about needs off the 12v rail. Also it only just met the requirements and may or may not have begun to fall off in performance.

I am by no means well versed in the intricacies of Power supplies and am wondering if I need to get a new one or not, and if I do if I could get some recommendations that won't break my bank while still coming in bronze certified. Any other constructive input would be appreciated as well.
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  1. Best answer
    Check under the "Specifications" tab on the Newegg page for your power supply and you come up with these readings:

    +3.3V@25A, +5V@25A, +12V@46A, -12V@0.8A, +5VSB@3.0A

    On max load, a 770 would use about 20 amps. A CPU would use about 10 amps max (depending on the model) so I think you're within spec :)
  2. A 600 watt corsair psu should be fine(the newegg page for the card suggests a 450 watt supply), the label says it has 46 amps on the 12 volt rail.
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