PSU Powerful Enough for 7900GS KO?

By cfitzarl
Nov 20, 2006
  1. I *finally* bought (well, it was a gift) a nice video card for my system. The power requirements call for a Power Supply of:

    20A on +12V Rail

    I have a PSU of:

    18A on +12V Rail

    My question to you (everyone) is if you think I should try to use the card with this PSU, or should I just buy a nicer one in general. If I get a new Power Supply, what should I get (another question in another post from me)? I know of Thermaltake, and was recently told that FSP Group makes a good PSU as well. Is there any other brand that you would suggest to me? Thank you in advance for any replies :) .
  2. kitty500cat

    kitty500cat TS Evangelist Posts: 2,154   +6

    What brand is your current power supply? That, w/ the other info you gave, will help determine if you need a new one or not.
    PC Power and Cooling makes good PSUs, but they are, um, rather expensive (but w/excellent quality). Also, I think some of OCZ's are pretty good.

    Edit: I just saw your other post where you were describing your card. Nice card!! makes me wish....
  3. agi_shi

    agi_shi TS Rookie Posts: 385

    OCZ, PCP&C, FSP Group, Antec, Enermax, Cooler Master (I believe so...), Corsair too I'd say.

    You know, you can always get a gfx-dedicated psu too. There was one on newegg, 250W that can handle quad-sli (certified by nvidia). It was from a respectable company too, just forgot which one =/... ~70$ I belive. Just another option.
  4. cfitzarl

    cfitzarl TechSpot Chancellor Topic Starter Posts: 1,975   +9

    Oh, my mistake, I in fact forgot to list that my Power Supply is generic (it came with my case), therefore, it is not of brand name status (I forget the actual brand, but I can say it is not known). Personally, I feel that a new PSU will almost be necessary, although I was just asking for people's opinion. Thank you for you inquiries/help :) !
  5. wolfram

    wolfram TechSpot Paladin Posts: 1,967   +9

    Yeah, it will be completely necessary. I wouldn't run a high-end card with a generic PSU. It could blow, and probably blow up the mobo too. Very risky :hotouch:

    For a 7900GS, the FSP AX450 would be great :)

    Or maybe a cheaper PSU, (like mine, FSP ATX400-PA) would handle it well. Very strong and cheap PSU :)

    Regards :wave:
  6. K@in

    K@in TS Rookie Posts: 36

    i think that it will be fine - i used to run a 6800u and a athlonxp 3200+ on a crappy suncheer 400w-er
  7. Rage_3K_Moiz

    Rage_3K_Moiz Sith Lord Posts: 5,431   +28

    I prefer that you play it safe and get at least a 500W PSU. I like this one since it's an Antec. I've personally used an Antec PSU and it still works great after 4 years. There might be cheaper options available but I recommend this due to it's exceptional reputation for excellent performance.
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