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How much Power do I need?

Was going to buy a TX750 to power this system, will a TX650 do the job too?

Mob: ASRock z77 extreme 4-m
Ram: 2x 4Gb Corasair vengence
GPU: Raedon HD 7950
PSU: ?
Heatsink: Noctua NH-D14
CPU: Core i5 3570K

thanks
3 answers Last reply Best Answer
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  1. Best answer
    The TX650 will be more than enough, your build uses 393 watts with everything stressed out to 100% and capacitor aging to 10% (which is still new) though this does not include your DVD-Drive (20-30 watts at peak) and your hard drive or SSD (10-15 watts).

    -Socialfox :)

    If you are wondering how I found your wattage I used a power supply calculator. Link is below if you are interested.

    http://www.thermaltake.outervision.com/
  2. Overkill. 500w would be enough,
  3. Best answer selected by instacallum.
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