How many Watts do I need on a PSU for my build?

This will be my build:
AMD FX 8350
16B (2 x 8GB) Corsair Vengeance 1600MHz
2 x AMD Radeon R9 280x in Crossfire
1 HDD, 1 SSD
5 answers Last reply
More about watts psu build
  1. My guess is 850W, but as far as I know the actual specifications haven't been released. I'm just assuming the AMD cards will still be more power hungry than their nvidia counterparts, and I know the 8350 uses a lot of power as well.
  2. I wouldn't get anything less that a high quality 850w power supply, or even 1000w for some more headroom.
    www.newegg.com/Product/Product.aspx?Item=N82E16817151108
    http://us.ncix.com/products/?sku=78945&vpn=P1850BBEFX&manufacture=XFX&promoid=1317
    http://us.ncix.com/products/?sku=65626&promoid=1317
    http://www.amazon.com/dp/B0066AH46G/?tag=pcpapi-20

    The 280x is supposedly just a higher clocked 7970 GHZ so thats what im basing this on. Where the card has not released this is just an educated guess.
  3. Watts isn't what you need, it's amps.
  4. PCPartPicker part list / Price breakdown by merchant / Benchmarks

    Power Supply: XFX ProSeries 1050W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($159.99 @ Newegg)
    Total: $159.99
    (Prices include shipping, taxes, and discounts when available.)
    (Generated by PCPartPicker 2013-10-07 16:16 EDT-0400)


    or


    PCPartPicker part list / Price breakdown by merchant / Benchmarks

    Power Supply: Cooler Master V1000 1000W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($179.99 @ Microcenter)
    Total: $179.99
    (Prices include shipping, taxes, and discounts when available.)
    (Generated by PCPartPicker 2013-10-07 16:17 EDT-0400)
  5. Trenchcoat said:
    Watts isn't what you need, it's amps.


    True. It is also important to know how many amps are on the +12v rail(s).

    However, pretty much any decent, 80 PLUS high wattage psu will have enough amperage.

    I also should've mentioned that 850W was my minimum for crossfire 280x's. I agree that somewhere around 1000W watts is better.
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