Is my PSU enough to power a GTX 570 SLI?

I currently have a Corsair 650TX PSU and a pair of GTX 570's. Will I have enough power to both cards for my current card and have the rest of my rig run safely and possibly even overclock?

Currently I'm using the following:

i7 930 @ 4.2gHz 1.25 vcore
6GB Corsair XMS RAM (7-8-7-20) @ 1600mHz
Radeon 5870 1GB (no overclock)
1 TB 7200rpm and 500GB 7200rpm Hard drives
Soon to buy 2 OCZ vertex 3 pro SSD's for raid 0
CD/DVD Combo Drive
Auzentech Forte Sound Card
Killer 2100 Network Card
P6X58D-E Motherboard
Cooler Master Sniper Storm Case
4 answers Last reply Best Answer
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  1.'ll need an 850 watter. I'd recommend the XFX Black Edition 850 @ $110

    For comparison purposes , the list below contains performance ratings (10 scale) at / prices as per newegg on 12/31/2010 and ones w/ double asterisks (**) made it onto's Editor's Choice List meaning they excelled at both electronic and acoustic performance:

    Antec SG-850 - 10.0 ($250) **
    Antec CP-850 - 10.0 ($120) ** NTE: Requires compatible Antec case
    XFX 850W Black Edition 10.0 ($110)
    Corsair HX850 850W - 10.0 ($170)

    Antec TruePower Quattro (TPQ-850) - 9.5 ($150)
    Corsair TX850 - 9.5 ($130)
    Seasonic M12D 850W - 9.5 (NLA) **
    NorthQ Giant Connector 850W - 9.5 (NFS)
    Etasis ET850 - 9.5 (NLA)
    Silverstone Zeus ST85ZF - 9.5 (NLA)

    Enermax Revolution 85+ 850W - 9.0 (OOS)

    Thrmaltake Toughpower XT 850W - 8.5 (NLA)
    OCZ Z Series 850W - 8.5 ($165)

    NorthQ Black Magic Flex 850W - 8.0 (NFS)
    Coolmax CTG-850 - 8.0 (NFS)

    SilverStone Decathlon DA850 - 7.5 (NLA)
    Enermax Galaxy DXX 850W EGX850EWL - 7.5 (NFS)

    SilverStone Strider ST85F - 7.0

    Silverstone Element ST85EF 850W - 6.0

    OOS - Out of Stock / NFS - Not For Sale / NLA = No Longer Available
  2. The two GeForce GTX 570s will draw a maximum of 36.5 Amps from the +12 Volt rail(s).

    The i7-930 will draw 8 Amps continuous and 13 Amps peak from the +12 Volt rail(s).

    That's already 49.5 Amps required from the +12 Volt rails.

    Still haven't taken into account the HDDs or SSDs or CD/DVD drive or sound card or discrete network card or motherboard or case fans.

    The Corsair TX650W is only able to provide 52 Amps on its +12 Volt rail. It's clearly insufficient to power your configuration.

    As @JackNaylorPE has pointed out a high quality 850 Watt PSU is recommended.
  3. Best answer
    Here is Guru3D's power supply recommendation:
    GeForce GTX 570
    On your average system the card requires you to have a 600 Watt power supply unit.

    GeForce GTX 570 in 2-way SLI
    A second card requires you to add another ~225 Watts. You need a 750+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking).
  4. Best answer selected by dvtran93.
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