Sapphire 6850 Power Problem ?>

Hi,
Today I bought the Radeon 6850 1gb ddr5 model , and I have it installed into the pci x16 slot at the moment. I noticed once it was in the slot that I had no PCI power cable to go on top of the graphic card. So I got the adapter out of the graphic card box and connected it to the top of the graphic card. I noticed at the end of the adapter that it had a molex 3-pin connection and all I had coming out of my power supply was 4-pin molex connecters. I cant add pictures on this for some reason but I am wondering would that alright if I connected the 3 pin molex to the 4 pin ?
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More about sapphire 6850 power problem
  1. I have an un-named 500w psu but I beleive the 6850 uses a maximum of 180 watts so should that be alright to run the card ?
  2. Wel I read the power supply on my pc and it says :

    Dc output: +3.3v= 22a
    +5v=25a
    +12v=18a
    +12v=16a
    -12v=0.5a
    +5VSB=2.5a

    Is that not good enough for the 6850 ?
  3. My PSU name is ATX-500
  4. it's a roll of the dice. from your 12v rail it looks like a 450w PSU.[/quotemsg

    Other people have been telling me that it should be fine. What is the worst thing possible that could happen? PSU stop working ?
  5. Anonymous said:
    it's a roll of the dice. from your 12v rail it looks like a 450w PSU.[/quotemsg

    Other people have been telling me that it should be fine. What is the worst thing possible that could happen? PSU stop working ?

    The worst possible thing that could happen is that the power supply could burst into sparks and die, and take some components, like your shiny new 6850, with it.
  6. ct1615 said:
    +1

    more then likely it will just die a quick death but you (and we) don't know what safety circuits it has if any at all.


    so what is the recommended amps for the 6850 if i were to buy a new power supply and also what are the minimum amps required?
  7. it says exactly at the back of the PSU this:

    Dc output:

    [+3.3v= 22a ]
    - Rated power= 130w max
    [+5v=25a ]

    [+12v1=18a ]
    -- Rated power= 351w
    [+12v2=16a ]

    -12v=0.5a - Rated power= 6w

    +5VSB=2.5a - Rated power= 12.5w

    I would of thought 351w would be able to run the card with no problem?
  8. Thanks for that info, so if I were to buy a new PSU what would be the minimum requirement of amps to run the 6850 would you say ?
  9. ct1615 said:
    30a on the 12v will do the job on a quality unit.


    Alright thanks, thanks a million for your advice, your a great help!
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