Should I upgrade PSU for new video card?

I bought a new video card, a 1950 pro pci-e card and i'm wondering if I should upgrade my PSU. On the manifacture's website (ASUS) it said that a 450 watt PSU is recommended. And even more for crossfire. I've read numerous posts and none shed light on this for me. Everything is working fine but maybe i'm not getting the card's full overclocking potential (ASUS smart doctor). Should I upgrade.


P.S Budget tight. And power supply came with case, 400 watt.
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  1. Tell us what PSU you have and how many amps it has on the 12v rails

    running a PC with less than recommended Power is a bad idea. It wont last too long before it blows, and then it might take out your mobo, cpu, and or GPU 8O 8O 8O
  2. definitely;
    Quote:
    450-Watt power supply or greater, 30 Amps on 12 volt rail recommended

    from: link

    amps on the 12v rail(s) are more important
  3. The specs on the label begin as followed:

    HNT ( Maybe Company?) Switching Power Supply

    +3.3V=28A
    +5V=50A
    +12V=18A
    -12V=1A
    -5V=0.8A
    +5VSB=2.5A

    MAX: 230W for +3.3V and +5V
    12W for -12V
    4W for -5V
    12.5W for +5VSB

    422W under +3.3V, +5V, and +12V

    Max total Wattage= 450W

    I think I listed that right. I'm just beginning to under stand PSUs.

    I think I know what this is leading. Upgrade right. I've been using my video card for a month now. 8O

    The demanding games I played was Empire Earth 2, Oblivion, and Company of Heroes. Maybe only overclocking was affected? I'm now afraid my computer is going to explode as I type. I hope I haven't done any damage. Help?! :?
  4. I think one thing was affected. Oblivion. For the past month now, i've been having instant shut offs. The technical support haven't been much help. And it's beginning to get annoying. Would that be called system instability? Would that mean there is damage? What should I do, buy a new PSU. I guess I should. Any suggestions.
  5. Quote:
    The specs on the label begin as followed:

    HNT ( Maybe Company?) Switching Power Supply

    +3.3V=28A
    +5V=50A
    +12V=18A
    -12V=1A
    -5V=0.8A
    +5VSB=2.5A

    MAX: 230W for +3.3V and +5V
    12W for -12V
    4W for -5V
    12.5W for +5VSB

    422W under +3.3V, +5V, and +12V

    Max total Wattage= 450W

    I think I listed that right. I'm just beginning to under stand PSUs.

    I think I know what this is leading. Upgrade right. I've been using my video card for a month now. 8O

    The demanding games I played was Empire Earth 2, Oblivion, and Company of Heroes. Maybe only overclocking was affected? I'm now afraid my computer is going to explode as I type. I hope I haven't done any damage. Help?! :?


    thats a single 18 ampere rail, no way it can handle that much stress, remember WHATS IMPORTANT ITS THE 12V RAIL.
    since most of the actual computers powers the stuff with it!
  6. Oblivon is really working your video card, the shut downs are probably due to the voltage droping on your 12v rail. Cheap PSUs are not recommended for any type of OC, if you really want to get the most out of your GPU buy a good quality PSU.
  7. None of those, they're all pretty low quality. I would get this psu, from the units you listed it should be within your budget, and its a fairly high quality unit for the price.
  8. Quote:
    None of those, they're all pretty low quality. I would get this psu, from the units you listed it should be within your budget, and its a fairly high quality unit for the price.


    That is a good unit for the money but I'd bump it up to the 500 watt FSP to have a bit more headroom.
  9. Thank you for the replies. That power supply looks pretty good. Higher Watts would be good. But i'm not yet ready to Sli/Crossfire yet so I think that should suffice. Now, as you see, i'm from Canada. :( That really sucks. As you can't really buy at American Online places. And if you do, you have to pay customs, which are usually outrageuos. (Had to pay 50$ for 250$ item). Are there other places to buy stuff at reasonable Canadian preices? I know tha's off topic but well, ya. :cry:
  10. www.canadacomputers.com
  11. Thank you very much. Appreciate it.
  12. your probably ok - the amd chip is low power 0 only 1 drive and the 1950 is only 65w
  13. whats your 12v amps?
  14. All the settings are at the top. The 12v rail is only 18A. Better than 14 or 10 but still is dangerous to have. Especially if it's under theManafacturer's minimum requirements.
  15. I finally think i've found the right PSUs and have narrowed down to these ones:

    [1. 600watt cooler master
    {
    [1. Cooler master manafacture's website

    [2. silverstoen 56f strider 560Watt
    {
    [2. Strider Manafacturer's website

    Which one should I get. Any other suggestions/other online Canadian stores to buy things from. My budget limit has increased to 100
  16. tigerdirect isn't an option for me. The shipping fees are huge. $16.00. Ncix isn't that bad though. Might try there. I'm confused with which power supply to buy. Customer reviews on newegg suppoedly said it's isn't that good. Loud, rattleing noise etc. I think my own conclusion is to get the silver stone 56f strider. It looks like a good quality power supply that should last a long time in my computer. It got a good rating at tom's hardware and I always trust these reviews. Is this the right choice?
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