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Power supply wattage

I'm building my own desktop and I'm pretty sure I'm going to use a 460w power supply. Would a 600w ever be necessary if I'm not trying to build a "beast machine"?
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  1. In short, probably not. Most pc's will not need more than 460w. This site should help, but usually overestimates slightly:

    http://www.extreme.outervision.com/psucalculatorlite.jsp

    What PSU were you looking at?
  2. Intel Core i5 quad core
  3. Thats your CPU, not your PSU:

    PSU = power supply unit
    CPU = Central processing Unit

    You may as well post your whole build, as well as a budget.
  4. If that site is what i think it is (which i can't tell because it won't open) It is very inaccurate. It is always better to go with a higher rated psu because that way, it is not working as hard, therefore prolonging it's life span. If you use all 460w of a 460w psu, you can expect it to last a no where near as long as a 600w at 460w. Plus if you ever want to SLI/Xfire, you will need a higher rated PSU. It will last you quiet a while getting a good PSU.
  5. CPU: Intel core i5 quad core
    GPU: AMD Radeon HD 7570
    RAM: 6GB
    HD: 1 Terrabyte SATA
    PSU: COOLER MASTER Elite 460 RS-460-PSAR-I3 460W ATX12V V2.31 Power Supply
  6. Best answer
    I agree about the site being inaccurate, but it is the best calculator out there unfortunately. I would recommend getting a PSu larger than you need, due to the effects of capacitor aging. For that build I would recommend this PSU:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

    It has plenty of power to allow you to upgrade other components later. There is a 500w version for $10 less, but I find it kind of pointless. In general, it is recomended that you buy PSU's made by Seasonic, Corsair, antec or some of the XFX PSU's.

    I would also try and spend a a little more on your graphics card if this is to be a gaming rig, try for at least a 650ti:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16814130838&nm_mc=OTC-pr1c3grabb3r&cm_mmc=OTC-pr1c3grabb3r-_-Video+Cards-_-EVGA-_-14130838

    The toms hardware GPU hierarchy chart should be helpful to you in this area:

    http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-3.html

    Which i5 do you plan on getting, and what motherboard?
  7. arcticmayhem said:
    CPU: Intel core i5 quad core
    GPU: AMD Radeon HD 7570
    RAM: 6GB
    HD: 1 Terrabyte SATA
    PSU: COOLER MASTER Elite 460 RS-460-PSAR-I3 460W ATX12V V2.31 Power Supply

    PSU isn't very good
    System would happily run on a 300 watt psu
  8. arcticmayhem said:
    CPU: Intel core i5 quad core
    GPU: AMD Radeon HD 7570
    RAM: 6GB
    HD: 1 Terrabyte SATA
    PSU: COOLER MASTER Elite 460 RS-460-PSAR-I3 460W ATX12V V2.31 Power Supply


    courtesy of johnnyluck.org

    Elite Power 460 Not 460 watt as advertised. Identical to Elite Power 400 watt model. No over current protection as advertised. Hardware Secret

    Buyer beware on this PSU
  9. As I said above, It's recommended that you buy PSU's from a choice few manufacturers, as they are the only ones who reliably produce PSU's that actually perform as stated. Seasonic, Corsair and Antec are the only brands I buy, but a few people have recommended some of the XFX units, but only the ones produced by Seasonic. A lot of the Corsair PSU's are made by Seasonic.
  10. Best answer selected by arcticmayhem.
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