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PSU for i5 3570k & Radeon 7950

Hey guys,

I need some advise on what PSU to buy. I would like it to be modular (semi-modular is fine) and I can find a decent deal myself if you can suggest a make/model.

I am going to be using these components:

Case - Antec 900 (4 case fans)

CPU - Intel i5 3570k Ivy Bridge

CPU heatsink - CM Hyper 212 EVO

GPU - either a Radeon 7950 or a GTX 660 ti when it comes out.

As for my mobo, it will be some version of a mid-high range Intel 1155 Z77 chipset board.

Other components include a 120gb SSD boot drive and 1-2 other HDDs.

Thanks for all the help! Let me know if more info is needed.
8 answers Last reply Best Answer
More about 3570k radeon 7950
  1. Best answer
    The size of the psu is gated by the graphics card.
    In this case, a 7950 needs a 500w psu with two 6 pin pci-e power connectors. I expect the GTX660 to be similar.
    This includes an allowance for a normal complement of other parts.
    http://www.amd.com/us/products/desktop/graphics/7000/7950/Pages/radeon-7950.aspx#/2

    The first rule for a psu is to buy QUALITY.
    My short list would include Seasonic, Antec, PC P&C, XFX, and corsair.

    It would not be wrong to overprovision a bit to 600-650w. The psu would operate more efficiently and be quieter.
    If you are planning for cf/sli (which I do not much like) then look for a 750w psu.

    In a Antec 900, I do not see much value in modular. There are plenty of places to stow the few leads that will be unused.
    Also, you will never save enough electricity to pay for a gold rated psu.
    I see gold rated and modular as beneficial primarily for small form factor cases.

    Here is a seasonic 520w unit for $60:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151093

    Here is a 600w PC P&C silencer for $70:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817703036
  2. Single 7950 and no OC....550+ watt PS.
    Twin 7950 and no OC....650+ watt PS.

    600W PC Power and Cooling Silencer Mk3 S600 (Seasonic). 80 Plus Bronze certified. $67 after MIR at NCIX.com
    620W Antec HCG-620M (Seasonic). Bronze. $73 after MIR at Newegg.com
    650W NZXT Hale82-650-M (Seasonic). Bronze. $85 at OutletPC
    620W Seasonic M12II 620 Bronze. $89 at SuperBiiz
    750W NZXT Hale82-750-M (Seasonic)....recommended as best bang for the buck. $100 at OutletPC

    Dave
  3. XFX Core Edition PRO550W (P1-550S-XXB9) 550W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply
    $74.99 (Seasonic made)
    JonnyGuru.com Recommended & KitGuru.com Award Winner


    http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013#top
  4. Best answer selected by ForYourHealth.
  5. Thanks for all the help guys!

    I forgot to mention that I will be OCing, probably with only a single card. If I were to ever SLI/CF, it will be way off in the future. And it is hard to tell which will be more cost effective in the future, single card or dual card. I really don't know at this point, so I'll cross that bridge when I get there.

    But, there's a 750W antec on sale right now on newegg for $70 after rebate. There is also a TX650 Corsair for $60 after rebate.

    Are those good PSUs for the value? What are the chances of me finding another sale like this?

    Thanks!
  6. ForYourHealth said:
    Thanks for all the help guys!

    I forgot to mention that I will be OCing, probably with only a single card. If I were to ever SLI/CF, it will be way off in the future. And it is hard to tell which will be more cost effective in the future, single card or dual card. I really don't know at this point, so I'll cross that bridge when I get there.

    But, there's a 750W antec on sale right now on newegg for $70 after rebate. There is also a TX650 Corsair for $60 after rebate.

    Are those good PSUs for the value? What are the chances of me finding another sale like this?

    Thanks!

    Either one is a very good psu, and a good value.
    Your chances are very good of finding another such sale. The psu market seems to be very competitive.
  7. geofelt said:
    Either one is a very good psu, and a good value.
    Your chances are very good of finding another such sale. The psu market seems to be very competitive.


    Okay then, I see no reason why I need to jump on these deals then. I will wait until closer to when I am going to actually make my build.

    Thanks!
  8. my build is the same ..bt i require a value for money cabinet
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