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What PSU Should I get?

Hi there!
I just bought a cheap Acer computer for $480. It has an i5 3330, 6GB RAM, 1 TB HDD, and a GT 630 2GB. I want to upgrade the GPU. If I get an AMD 7790, but keep everything else the same, what power supply should I get?

Thanks for any suggestions :D
17 answers Last reply Best Answer
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  1. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

    CORSAIR Builder Series CX430 430W ATX12V v2.3 80 PLUS BRONZE Certified Active PFC Power Supply

    Jonnyguru recommended award

    $39.99


    http://us.ncix.com/products/?mode=productreviewread&product_id=63238

    XFX 450W Core Edition Single Rail ATX 12V 34A 24PIN ATX Power Supply 80PLUS Bronze

    $58.33
  2. 600W Corsair CXM Builder series, Hybrid Modular, 85% Eff', 80 PLUS Bronze, SLI/CrossFire, EPS 12V, Fan, ATX
    http://www.scan.co.uk/products/600w-corsair-cxm-builder-series-hybrid-modular-85-eff-80-plus-bronze-sli-crossfire-eps-12v-fan-atx
  3. Your 7790 will need a 430w psu with one 6 pin connector.
    Newegg has a Corsair CX430 on sale for $20 after rebate.
    Not a bad psu. But, I think I would go stronger to allow you to upgrade the graphics card in the future. 500w or more perhaps.
    Look for seasonic, corsair, antec, xfx, pc p&c for quality units; do not buy a low quality psu.
  4. Thanks for the quick responses!
  5. If you buy a Corsair CX, make SURE it's one of the "M" models, one of the modular ones. Although they are all built by CWT, the non-modular ones use some inferior Samxon capacitors that don't like heat and are known for early failure. Fine in light-duty office builds, I wouldn't put on in a gamer.
    The XFX linked by SR-71 would be a nice choice. Others to consider are the 450W Rosewill Capstone and the 380W Antec Earthwatts. All would do.
  6. Best answer
    No but this is:


    PCPartPicker part list / Price breakdown by merchant / Benchmarks

    Power Supply: Corsair CX 500W 80 PLUS Bronze Certified ATX12V Power Supply ($49.99 @ Microcenter)
    Total: $49.99
    (Prices include shipping, taxes, and discounts when available.)
    (Generated by PCPartPicker 2013-08-02 11:35 EDT-0400)


    Dimensions
    5.9"(W) x 3.4"(H) x 5.5"(L) < This is the standard OEM spec , the Acer needs this
  7. PCPartPicker part list / Price breakdown by merchant / Benchmarks

    Another Quality Unit:

    Power Supply: Enermax 450W ATX12V Power Supply ($43.97 @ Outlet PC)
    Total: $43.97
    (Prices include shipping, taxes, and discounts when available.)
    (Generated by PCPartPicker 2013-08-02 11:39 EDT-0400)
  8. Any thoughts about this one?
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817438012

    I didn't know EVGA makes PSUs. I know I seem cheap, but I'm only 14 and I'm trying to keep everything at a low price :P
  9. That is a fair at best , they don't make good PSU's.

    Get one of the 2 I linked, very decent units.
  10. Hmmm, is that EVGA not built by SuperFlower? That would make it decent.
    A $45 380W Antec Earthwatts would be another suitable PSU for that build.
  11. Here is one list of psu's sorted by quality tiers.
    http://www.eggxpert.com/forums/thread/323050.aspx
    It is worth while to spend a bit more on a quality unit.
    Also, buying a 20% stronger psu than you need will allow the unti to run more efficiently and be quieter. It gives you some leeway for a future graphics card change.
  12. While not bad in theory, in practice that list is ancient and therefor obsolete.
    A much more current, maintained listing may be found at http://www.johnnylucky.org/power-supplies/psu-recommendations.html
    He cites competent technical reviews to back up his recommendations as well. Similarly, he's got a Lemon List there too, indicating [some of] the junk to avoid.
  13. It was updated on 4/2013.

    Last Update of this list was on 04/18/2013 < Bottom of List
  14. Maybe Proximon will poke him with a sharp stick for another update...
  15. Thanks for all the help guys :D
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