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Good PSU around $50?

Need a cheap PSU. thanks :)

CPU: Intel i5 3570k will overclock to 4.5ghz

GPU: Radeon 7850

Motherboard: ASRock Pro3

CPU cooler: Hyper 212 plus

Crossfire: no

Ram: 2 x 4gb Corsair Vengeance
10 answers Last reply Best Answer
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  1. This power supply should do nicely, and it is a pretty good power supply in terms of quality.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371045
  2. socialfox said:
    This power supply should do nicely, and it is a pretty good power supply in terms of quality.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371045


    You think 450w is enough? I really don't have much experience with building computers so I don't know how much power will be enough :)
  3. PSU is a vital component of your system. Do not stint on it.

    PC Power and Cooling Silencer MK III 500W (@4.6GHz OC it will be maxed out)
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817703035

    Corsair CX600
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

    XFX P1-550S-XXB9
    http://us.ncix.com/products/?sku=59615&vpn=P1550SXXB9&manufacture=XFX&promoid=1257
  4. Best answer
    Well take a look at this:

    3570k (stock) - 77 watts
    HD 7850 - 130 watts (for combined 12v rail, 24 amps needed)
    2x4gb- 10 watts per module (just an rough guess, could be less)
    Fans - Barely use any watts, I would say 5 watts for the average fan.
    DVD Drive - 30 watts at most (yours could use less)
    Hard drive 15 watts

    Just a rough estimation including a bunch of fans and other factors and you come near 250 watts. That leaves 200 watts for overclocking and a bunch of fans. The VP-450 has 2 12v rails of 18 amps per rail. That means 36 amps on both rails is more than enough for the HD 7850 that asks for 24 amps on a single rail.

    Edit: Here is a power supply tier list
    http://www.eggxpert.com/forums/thread/323050.aspx

    The Antec VP-450 is a very good unit, it's in tier 2b which is pretty good.
  5. System with 3570k @ 4.6GHz at full load takes about 230W :) Add GPU load to that.
  6. Even with 230 watts doesn't it come to around 425 watts? Anyways are you sure it uses 230 watts? I myself don't own it but it kind of seem awfully high.

    If you are using a 3570k then use this:
    http://www.extreme.outervision.com/psucalculatorlite.jsp

    And input your overclock and voltage and see how many watts it comes out to.
  7. Airplane said:
    Need a cheap PSU. thanks :)

    CPU: Intel i5 3570k will overclock to 4.5ghz

    GPU: Radeon 7850

    Motherboard: ASRock Pro3

    CPU cooler: Hyper 212 plus

    Crossfire: no

    Ram: 2 x 4gb Corsair Vengeance


    Hi - if you can stretch $5 I think this is a great deal:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151119 Seasonic G series nets to $55 after mir

    Tom

    and 550w gives you plenty of headroom
  8. Best answer selected by Airplane.
  9. socialfox said:
    Well take a look at this:

    3570k (stock) - 77 watts
    HD 7850 - 130 watts (for combined 12v rail, 24 amps needed)
    2x4gb- 10 watts per module (just an rough guess, could be less)
    Fans - Barely use any watts, I would say 5 watts for the average fan.
    DVD Drive - 30 watts at most (yours could use less)
    Hard drive 15 watts

    Just a rough estimation including a bunch of fans and other factors and you come near 250 watts. That leaves 200 watts for overclocking and a bunch of fans. The VP-450 has 2 12v rails of 18 amps per rail. That means 36 amps on both rails is more than enough for the HD 7850 that asks for 24 amps on a single rail.

    Edit: Here is a power supply tier list
    http://www.eggxpert.com/forums/thread/323050.aspx

    The Antec VP-450 is a very good unit, it's in tier 2b which is pretty good.
  10. Slight correction TDP is not the same as wattage. The TDP of the 3570k is 77, but it should use less in terms of wattage ( so less than 77 watts at stock speeds).
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