GPU Amp Info Needed

Hay Guy's!

I'm all confused,I'm wondering what the heck they are talking about when they
say:Minimum 450W or greater system power supply
(with a minimum 12V Current rating of 24A)
Two 6-pin supplementary power connectors.

Questions:
My PSU Xigmatek NRP751:750W 4-12V-18A

1: Do they mean 12V 24A on each 6-pin Connector? or a total of 24A?
2: My PSU has 4 12V 18A Connectors,so does that ean with 2 connected there is 36A going into the card?
3: the GTX 280 wants "I think" 600W 34A or so,does that mean I could run one?

Now the GTX 295 wants 660W 46A I think,But that would be like GTX260 in SLI,So I know I cant run that right?

So I'm confused!

Thank you all! for your help and time!
6 answers Last reply
More about info needed
  1. 1- They mean the total 12v output.
    2- The rail ratings are not additive, check the label for the wattage provided to them to figure combined 12v output.
    3-Shouldn't be a problem, and with a 46 amp recommendation, I don't think the 295 would be either.
  2. So you mean there is 36A Going into my GPU? I have a 9800GTX-KO witch say's Min 450W 24A .

    So if it's true I have 36A/18A-2 6pin then why can't I go SLI with GTX280's?
    or that's what SLIzone.com say's anyway.

    Thanks!
  3. Zerk said:
    So you mean there is 36A Going into my GPU? I have a 9800GTX-KO witch say's Min 450W 24A .

    So if it's true I have 36A/18A-2 6pin then why can't I go SLI with GTX280's?
    or that's what SLIzone.com say's anyway.

    Thanks!


    Your psu has a 60 amp combined output ( 720 watts provided to the four 12v rails, read the label ) more than enough power for a GTX295.
    It use's a CWT oem very similar to Thermaltake's units.
  4. But if I have 18A Rails and there's only 2 connected?

    Like the GTX 280 say's it needs 40A if I connect 2 18A to it that's only 36A Right?

    Sorry I just want to get to the bottom of this,I want to know for sure.


    Thank you! so much!
  5. Zerk said:


    Like the GTX 280 say's it needs 40A if I connect 2 18A to it that's only 36A Right?


    What you're not understanding is that the 40 amp recommendation is for the entire system, not the card alone.
    The GTX 280 has a max power rating of under 20 amps.
  6. OH! Thank you Vary much Friend! That helps A lot! I was so messed up! I thought that 40A was a lot for one card!

    Sorry my good friend!

    Thank you Vary much!
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