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Selecting my PSU

Hi guys, I'm building my first PC right now and I have all my parts selected but before I lay down the cash I just wanna make sure all things are compatible. My biggest concern is the PSU at the moment. I'm looking at a Corsair HX750 750W PSU for this build I'm looking at. Here's the specs:

Motherboard: ASUS P8Z68-V PRO/GEN3
Graphics Card: EVGA Nvidia GTX570 2560MB
CPU: Intel i7 2600K
HDD: Western Digital 1TB HDD
SSD: Crucial M4 128GB SSD
RAM: Corsair Vengeance 8GB

So far this is what I have. I do believe that this will work, but I would like a second opinion.

So many thanks up front!!
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  1. topato said:
    Hi guys, I'm building my first PC right now and I have all my parts selected but before I lay down the cash I just wanna make sure all things are compatible. My biggest concern is the PSU at the moment. I'm looking at a Corsair HX750 750W PSU for this build I'm looking at. Here's the specs:

    Motherboard: ASUS P8Z68-V PRO/GEN3
    Graphics Card: EVGA Nvidia GTX570 2560MB
    CPU: Intel i7 2600K
    HDD: Western Digital 1TB HDD
    SSD: Crucial M4 128GB SSD
    RAM: Corsair Vengeance 8GB

    So far this is what I have. I do believe that this will work, but I would like a second opinion.

    So many thanks up front!!


    P.S. I'm adding a Blu-Ray/DVD burner too but I'm still shopping around for those. Thanks!
  2. 750 watt PS is sufficient if you ever plan to twin your GTX 570. I didn't include any OCing.

    Dave
  3. Thanks Dave! I hadn't planned on over clocking, I'm not familiar enough with it to want to try something like that but maybe on a future build.

    Thanks so much
    Dallon
  4. You'll be fine with one GTX 570. If you go with 2 GTX 570s, 750W should still be OK. From the specs, a single GTX 570 requires 268W and draws about 22.3A on the +12V Rail(s) maxed out.
    http://forums.atomicmpc.com.au/index.php?showtopic=264
    My 2 GTX570s when stressed under Furmark show a total of a bit over 500W on my Kill-O-Watt Meter. Of course, that includes the other devices in the system too. And is the primary side of the PSU. Run your system through this calculator: http://www.thermaltake.outervision.com/
  5. clutchc said:
    You'll be fine with one GTX 570. If you go with 2 GTX 570s, 750W should still be OK. From the specs, a single GTX 570 requires 268W and draws about 22.3A on the +12V Rail(s) maxed out.
    http://forums.atomicmpc.com.au/index.php?showtopic=264
    My 2 GTX570s when stressed under Furmark show a total of a bit over 500W on my Kill-O-Watt Meter. Of course, that includes the other devices in the system too. And is the primary side of the PSU. Run your system through this calculator: http://www.thermaltake.outervision.com/



    Oh wow, so this is plenty. Okay, thanks so much for your help, I'll run it through and see what I come up with.

    Thanks clutch!
  6. Best answer
    A system with single GTX 570 requires a 550W PSU with at least 40A on the 12V rails and two 75W 6-pin PCIe power connectors. Amperageon the 12V rails is more important the wattage rating of the PSU; most power draw in modern PCs is by the CPU/GPU on the 12V rails. The Seasonic M12II-520 with 40A on the 12V rails and two PCIe power connectors is sufficient for your build and is a great deal on newegg for $65: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151093&Tpk=m12ii%20520 If you're not overclocking or going to put in a second GTX570, then you don't need an more PSU than that. Review on the non-modular version of the PSU (only difference is cabling): http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=185
    If you think that you HAVE to have more power or simply just WANT more power, then there is a geat deal on the Corsair TX 650V2: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020 It has a much beefier 12V rail with 53A and actually costs slightly less than the M12II-520 after MIR, but is not modular.
  7. Any of the above mentioned would be fine i have never tested my system with one GTX 570 but i have tested it with two my rig draws 758W but i have my two 570 OC hard and CPU OC i5 2500k@4.8GHZ 1.36V you should be fine with a 550W but for breathing room i would get one of these CORSAIR Enthusiast Series TX650 V2 650W ATX12V v2.31/ EPS12V v2.92 80 PLUS BRONZE Certified Active PFC High Performance Power Supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020#top


    XFX Core Edition PRO650W (P1-650S-NLB9) 650W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014#top

    Antec HCG M Series HCG-620M 620W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371059#top

    SeaSonic M12II 650 SS-650AM 650W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Semi-modular Power Supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151106#top

    SeaSonic M12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095#top

    SeaSonic X Series X650 Gold ((SS-650KM Active PFC F3)) 650W ATX12V V2.3/EPS 12V V2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Full Modular Active PFC Power Supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088#top

    CORSAIR Professional Series Gold AX650 650W ATX12V v2.31 / EPSV12 v2.92 80 PLUS GOLD Certified Full Modular Active PFC High Performance Power Supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139035#top


    CORSAIR Professional Series HX650 (CMPSU-650HX) 650W ATX12V v2.2 / EPS12V 2.91 SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139012
  8. Best answer selected by topato.
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