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Need a psu calculation plz

So i tried doing a psu calculation jus a bit ago, and i got a message saying i need 3.4kw from my psu which cannot be right.

My rig is going to be using

AMd phenom x3 720 3.0ghz
Msi 880-gm-e41 mobo
Gigabyte Geforce GTX 550 ti 4.2ghz
pny 4gb (2x2) 1600 ram
WD Caviar Blue 500gb
ASUS DRW-24B1ST 24X SATA DVD

and prob a 120-140mm fan or two as well.
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  1. Best answer
    PSU calculators are accurate, but we don't know and can't exactly what to put in.

    A good old fashioned ROT is plenty good enough.

    The psu requirement is almost entirely gated by the graphics card/s you will use.
    In the case of a GTX550ti, you will need a 400w psu with 24 12v amps and a 6 pin pcie power connector:
    http://www.evga.com/products/moreInfo.asp?pn=01G-P3-1556-KR&family=GeForce 500 Series Family&sw=

    No harm in getting a stronger one up to perhaps 650w.
    Quality counts. My short list of quality psu's would include Antec, Seasonic, XFX, Corsai, and PC P&C.
  2. Just used this:
    http://www.extreme.outervision.com/PSUEngine
    It says that you shouldn't need more than 313 watts and recommends 363.
    This would work:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033
    Good Luck!
  3. For a single GeForce GTX 550 Ti graphics card system NVIDIA recommends a minimum of a 400 Watt or greater power supply with a minimum +12 Volt continuous current rating of 24 Amps or greater and with at least one 6-pin PCI Express supplementary power connector.

    Stick with reputable name brands like Antec, Corsair, Seasonic and XFX.
  4. Best answer selected by hilbz462.
  5. Will this psu work? It says 8(4 + 4 ) 12v pins but im not sure if thats 2 seperate ones.

    Antec Neo Eco 450C Power Supply ATX 12V Active PFC 80PLUS 120MM Fan

    http://www.antec.com/Believe_it/product3.php?id=NzA0NDEw
  6. Hah disregard last. Mis read the posts
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