How much my psu can handle???

DC OUTPUT +5V +3.3V +12V 1 +12V 2 +12V 3 -12V 5VSB

MAX 25A 20A 19.5A 19.5A 19A 0.8A 3.5A

CONTINUITY 20A 15A 14A 13A 6A 0.5A 3.0A

MAX POWER 141W 396W 6W 15W

500W (continuous)

So the psu states this specs. It is the coolermaster igreen 500w with active pfc. As i don`t really understand about psus my question is, how many amps is it giving to the +12v, and if it is enough to power an 8 series gfx or two high end ati cards in crossfire.
And please do not send my back to the psu threads
8 answers Last reply
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  1. The manufacturer says...

    396w/12v=33A total combined +12v

    It should handle a basic 8800gtx system without an issue, a typical E6600/1hdd/1dvd/2fan system would hardly crack +12v@21A of system demand. The same system with a x1950xtx crossfire, you're approaching +12v@27A so that would be a little too close for comfort - personally I would plan for a larger unit in that case.
  2. sorry not enough for 8 sreies maybe but with problems do you have dual 12+
    get sli compat they will run any card/s out there on the market
  3. Quote:
    sorry not enough for 8 sreies maybe but with problems do you have dual 12+

    I am in dissagreement, with proof: my PSU is a Antec TPII-480 blue, with a similiar +12v@33A rating - and I have an 8800gts 320mb...


    My specs:

    opty175 & Scythe SCNJ-1100P
    EVGA 133-K8-NF41 & G.Skill F1-3200PHU2-2GBZX (2x1GB 2-3-2-5)
    EVGA 8800gts 320mb
    3 x hdd's & 1 x dvd
    old Gateway 500mhz server case & 2 x 120mm fans & aerocool gatewatch
    Antec TPII-480 blue
  4. well your psu is sppppppppppppppeeeeeeeccccccccciiiiiaaaaaaaaaaaaaaaallllllllllllllll
  5. Quote:
    sorry not enough for 8 sreies maybe but with problems do you have dual 12+
    get sli compat they will run any card/s out there on the market



    the psu is sli certified. it has an output of 600w, 500w is the continous power that can deliver. The psu has 85% efficiency.
    Please no noob answers.
  6. So on my system i currently have :
    msi p965 platinum
    intel core 2 duo 2.13ghz
    2x sata hdd
    1x dvdrw
    2x1gb ram
    aerocool coolpanel
    4x80mm fans
    1x30??mm fan (for northbridge)
    thermaltake bigwater watercooling (has 1x120mm fan)
    xfx 7600gt xxx edition.
    1x usb bluetooth
    1x usb gamepad
    1x usb hdd that gets externall power

    So with these currently on my system, i can run an 8 series gfx or 2 ati crossfire even when the new dx10 ati gets out???
    I know that the system draws a lot of power, but have no idea how to calculate the amperes needed and if they are enough .
  7. It amazes me how people think they need 100000000W for their systems. As far as im aware most systems will run just fine on a 500W supply. I have also seen evidence of a quad core, 2gb ram, 2x8800gtx's, 4xhdd and other stuff running on a good quality 550W supply with no problems.

    Quality and stability are the most important aspects of choosing a new psu in my opinion
  8. mpilch is right (as usual). Best at advice I have is to pay $1.95 for extreme PSU calculator plus edition after having read mpilch's PSU run downs (very nice btw). The problem is some of the smaller wattage PSU's can run 7 series SLI but may not be able to run 8800GTX (note: GTX) SLI, depends on the PSU (not that you were asking about SLI). The GTS isn't too bad power draw wise, the GTX is really where the power draw gets turned up (in the neighborhood of 14-16a, if I remember).

    Mpilch, I am depressed. I read your thread, calculated my 12v amperage and determined my current PSU can't run a 8800GTX and handle my OC w/enough room on the 12v rails. I think it came out .5a away from my PSU's max when I spec'd the system at 100% TDP (I tend to leave F@H running, I know that won't load the GPU's 12v draw). Way too close for my comfort.
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