What can 450W power?

So I'm planning some upgrades to my build. My current PSU is a really nice modular 450W OCZ. I don't really want to have to buy a new one if I don't need to. Would 450W be able to supply an AMD Phenom 955, ATI Radeon 5850 on a mid/high-end MOBO and DDR3-1600 RAM? I'll probably do some minor OC'ing of the components as well. I did the newegg PSU finder thing, and it recommended a 550W PSU. So... thought?
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More about what 450w power
  1. Sorry man no heres why
    500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode) for the 5850

    plus running fans on a case,hard drives, cd drives usb items speakers no a 450 wont cut it sorry
  2. I would go with a 700 watt psu a good brand like corsair or ocz my favorites
  3. cia24 said:
    I would go with a 700 watt psu a good brand like corsair or ocz my favorites


    no clue what you are talking about or how you achieve these numbers other then making them up but you are incorrect.

    with an ATI 5850 and phenom II CPU set up you won't break 350w at peak load. you can even OC the CPU and stay safe


    Test System Specs & 3Dmark Vantage

    Core i7 Test System Specs
    - Intel Core i7 965 Extreme Edition (Overclocked @ 3.70GHz)
    - x3 2GB G.Skill DDR3 PC3-12800 (CAS 9-9-9-24)
    - Asus P6T Deluxe (Intel X58)


  4. cia24 said:
    I would go with a 700 watt psu a good brand like corsair or ocz my favorites

    Umm, I'm no expert but a 700W PSU seems like overkill. I was thinking this instead.. http://www.newegg.com/Product/Product.aspx?Item=N82E16817341022
  5. while ocz is definitely far from a bad brand i still dont really like to recommend them.

    a 450w of good enough quality (like ocz) will power it just fine
  6. my current OCZ PSU has been plugging along quite well. I'm happy with it. The price premium on Corsair's and equivalent is just too high.
  7. For whatever it is worth, I am presently running an OCZ Stealth X stream 600, [which Hardwaresecrets.com says OCZ could have sold as a 700w], and it is just fine for any single video card system, OCZ now has a Stealth X ETC,ETC,,, 600-2,which is a slight improvement on the original,no complaints here...:)
  8. I guess if you never want to do Sli/Crossfire in the future it is overkill.

    AMDnoob said:
    Umm, I'm no expert but a 700W PSU seems like overkill. I was thinking this instead.. http://www.newegg.com/Product/Product.aspx?Item=N82E16817341022
  9. Most people think a PSU either works or doesn't. They don't understand the many symptoms a poor PSU can create.

    Most OCZ PSUs are OK. Depends on the OEM and specific model. You are not likely to get the build quality or longevity that you would from a PSU built by Seasonic or Delta, for instance.
  10. One of my systems has an OC'd Q9550, 4 GB RAM, a GTX260 - a card with similar power requirements to yours, a Gigabyte EP45-UD3P motherboard, 3 hard drives and an optical, and a Soundblaster card all powered by a Corsair 750TX.

    Running 3 instances of Prime95 to load the CPU and 3DMark06 to load the GPU, it pulls 375 watts from the wall as measured by my Kill-a-Watt meter. Figuring 80% efficiency, the system pulls 300 watts from the PSU.

    It takes surprisingly little power to power most systems.
  11. when it doubt pull the Epower juice box out.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817101044&cm_re=ePOWER_EP-450CD-_-17-101-044-_-Product

    lol i thought it would be crap but i have used this in many stock computers like hp,dell so on has enough to power 1 gtx 465 lol
  12. so it turns out that my PSU is actually rated for 500W :3 soo, that might change things a little :\
  13. yeah you will be fine running the 5850.
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