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
More about psu

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

    Jonnyguru recommended award


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

  2. 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)

    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?

    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.
    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
    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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