How big a psu do I need?

considering a new psu, my previous one was 600W. What's the minimum psu wattage I can get away with?

ASUS P8P67 mb
EVGA 560ti
Intel i5 2500k
crucial ballistix DDR3 1600
WD 7200rpm HD 160GB
Crucial M4 SSD 64Gb
Antec Twelve Hundred case (fans: 6x120mm, 1x200mm)
ASUS DVD burner
ASUS Xonar DG sound card
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  1. execut1ve said:
    considering a new psu, my previous one was 600W. What's the minimum psu wattage I can get away with?

    ASUS P8P67 mb
    EVGA 560ti
    Intel i5 2500k
    crucial ballistix DDR3 1600
    WD 7200rpm HD 160GB
    Crucial M4 SSD 64Gb
    Antec Twelve Hundred case (fans: 6x120mm, 1x200mm)
    ASUS DVD burner
    ASUS Xonar DG sound card


    Hi - realhardtech suggests 500w fir a sys with one 560ti.
    You do have a few more fans than the average rig, but they
    use very little power. So, a quality 500w unit will do, but i'd
    suggest 550w - 650w for headroom & possible OC.

    Tom
  2. You really only need a quality 450W PSU if you're only using a single GPU.
    Note: This is a furmark test so this is exemplifies the worst case scenario.

    The whole system is pulling about 350W total, and keep in mind that this test rig has an i7 920, which sucks way more power than a 2500K.

    So you could get away w/ a quality 450W PSU if you don't plan to SLI.
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