PSU vs. AMD

Discussion in 'Videocards - AMD Radeon' started by isti84, Mar 6, 2012.

  1. isti84

    isti84 New Member

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    RX480 4GB
    Hi!

    I took the advice of a senior forum user, so i made this thread.

    In a near future I'd like to purchase a new AMD graphics card. I want to upgrade from 5670 to 7850. But the question is, will my PSU enough for this change. I have a CORSAIR CX430 - 430W PSU, PhenomII X6 1055T(125W), and an ASUS SB880/SB750 motherboard. I know, that the AMD recommends a 500W PSU for the GPU, but according to my calculations, the PSU can handle the 7850. And I don't want to overclock the graphics card, not now not ever.

    The PSU manufacturers homepage: http://www.corsair.com/builder-series-cx430.html

    So if anyone can help me with this, I'll be gratefull.

    Sincerely István
     
  2. Rich_Guy

    Rich_Guy Ancient Guru

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    GPU:
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    Its a decent PSU, but i don't think it will be enough, as only got 28a on the 12v rail, which sounds a bit low to me.
     
    Last edited: Mar 6, 2012
  3. Agent-A01

    Agent-A01 Ancient Guru

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    Id atleast get the CX500V2

    but i guess itll run on a cx430 but barely
     
  4. sykozis

    sykozis Ancient Guru

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    I wouldn't do it personally...
     

  5. bobkn

    bobkn Active Member

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    GPU:
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    Looks like the 7850 is a 150W card:

    http://www.anandtech.com/show/5625/...d-7850-review-rounding-out-southern-islands/1

    I'll oversimplify: 12.5A at +12V for the card, 10.4A for the CPU, or about 23A just for the CPU and card.

    You may be able to get away with it with the CX430 (28A) but a heftier PSU would be better.

    It might also have the second 6 oin PCI-E power connector that the card needs. (You can use a Molex to PCI-E adapter, but it's not the preferred way.)
     
  6. isti84

    isti84 New Member

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    Thanks for the quick help. I think i should get a better PSU no a 1000W, just a little better to be certain. I tempted by the revision of the test, by the G3D team. Approximatley they measured a 108W consuption. So my little brain started to work. Sadly i have to wait for the upgrade near 6 months to get the cards prices normalize. In my country the salers'll give them way to high sale price.
     

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