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Graphics Help, Wrong powersupply?

I am planning to get the GTX 760 4GB model from MSI (http://www.newegg.com/Product/Product.aspx?Item=N82E16814127748&cm_re=gtx_760-_-14-127-748-_-Product)

On the card are two 8pin connectors, My powersupply only has two 6 pin. is there anyway i can make this GPU work in my system, does the card come with adapters to molex?

This is my PSU by the way. (http://www.ebay.com/itm/750W-Gaming-120MM-Fan-Silent-ATX-Power-Supply-PSU-12V-/271229901254?pt=PCA_UPS&hash=item3f268fd9c6)
10 answers Last reply Best Answer
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  1. I would junk that psu asap.
    There is no way a $40 750w psu can be any good.
    It will not have proper protective circuitry.
    You run the risk of it failing under load and destroying all it is connected to.
    A clear indication of cheap and insufficient power is having only two 6 pin connectors.
    Every decent quality 750w psu will have 4 6+2 leads.
    Your new card might have some molex to 8 pin adapters, or you could buy some, but I would not use them.

    And, for what it is worth, 4gb vs 2gb does not seem to be much of a benefit:
    http://www.pugetsystems.com/labs/articles/Video-Card-Performance-2GB-vs-4GB-Memory-154/
  2. We are in the same boat my friend, and i'm planning to supply the gtx780 like that! So you'll have to find adapters from molex to 8-pin. The 2-6pin to one 8 is easy to find, probably it will be included in the box, check the accessories that come within the box.
  3. If a psu does not have sufficient 6/8 pin leads, it probably can not support more.
    A cheap psu can become very expensive.

    The only exception might be a top quality older psu with more than adequate power.
    An example might be the old PC P&C silencer 610 which would run a GTX780 just fine with adapters.
  4. If you have already bought the psu, you are stuck. It's not a good psu at all. At 750w you should be able to run 2x gtx 760's in sli, but that psu is nowhere capable of that.

    My suggestion would be buy a real psu, like the XFX 550w which can be found for about the price you paid for the 750. It's more than enough to power a gtx 770, Nevermind a 760, and will come with the correct connectors for your planned gpu.
  5. This is the only PSU i have, I really need to upgrade from a gts 440, :/ it runs my FX 8350 fine, but I want a better GPU. I just want to know (with adapters) will it power a that 760?
  6. Best answer
    No.
    Each 8 pin can draw 150w.
    The pcie slot can draw 75w.
    That totals 350w just for your graphics card.
    That is on the +12v rails so that translates to 350/12 = 29a.
    Since the advertised amps is reportedly 33a, there is no way you can run the rest of your system on 4a.

    You have been lucky so far with that psu.

    I suggest you take your $250 budget and buy a good psu and a good graphics upgrade.
    Here is a Seasonic S12 620w unit for $65 that has 49a and will run even a GTX780ti.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096
    Here is a GTX750ti FTW that is a big jump over your gt440:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16814487028
  7. Thanks for the help, I'm disapointed, but not as i would have been not knowing that i couldnt power the card i would purchase. thanks for the help, Toms hardware is very helpfull always.
  8. Can you recommend any slightly "beefier" power supplies, like 750W I want to future proof a bit.
  9. monkeybolo4231 said:
    Can you recommend any slightly "beefier" power supplies, like 750W I want to future proof a bit.

    How "beefy" do you need to be?
    Here are two links to help you.
    Here is what is needed for various graphics configurations:
    http://www.realhardtechx.com/index_archivos/Page362.htm
    Here is a list of psu units sorted by quality tiers:
    https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx?Redirected=true


    The Seasonic 620w unit can power a card as strong as a GTX780ti.
    If you are looking at dual graphics cards(which I don't recommend) then add about 200W.

    A psu will operate most efficiently in the middle third of it's range.
    It will also be quieter if the cooling fan does not need to spin up at maximum load.
    Since a psu will not use any more power than it needs, regardless of it's max rating, it is not wrong to overprovision to the next size or two larger.
    You are safe with Seasonic or XFX.
    Here are two larger units:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151107
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817207011
    There are other good units.
    Here is a reputable place to check out reviews:
    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Review_Cat&recatnum=13


    .
  10. geofelt said:
    monkeybolo4231 said:
    Can you recommend any slightly "beefier" power supplies, like 750W I want to future proof a bit.

    How "beefy" do you need to be?
    Here are two links to help you.
    Here is what is needed for various graphics configurations:
    http://www.realhardtechx.com/index_archivos/Page362.htm
    Here is a list of psu units sorted by quality tiers:
    https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx?Redirected=true

    Thank you.

    The Seasonic 620w unit can power a card as strong as a GTX780ti.
    If you are looking at dual graphics cards(which I don't recommend) then add about 200W.

    A psu will operate most efficiently in the middle third of it's range.
    It will also be quieter if the cooling fan does not need to spin up at maximum load.
    Since a psu will not use any more power than it needs, regardless of it's max rating, it is not wrong to overprovision to the next size or two larger.
    You are safe with Seasonic or XFX.
    Here are two larger units:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151107
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817207011
    There are other good units.
    Here is a reputable place to check out reviews:
    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Review_Cat&recatnum=13


    .


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