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Recommended PSU for i5-2500k with a 6790?

Hey guys, I'm going to be saving up for my first build and I found a great barebones kit on Tiger Direct that comes with an i5-2500k and a Thermaltake V2 Mid-tower with a 450W PSU. I probably won't be doing too much OC'ing until I can get some money for a better mobo, but if I do it'll probably be very minor. I was wondering if that PSU would be sufficient for that build or if I should just buy another one or downgrade to a 6770. Here's what I am talking about.
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  1. You'd be taking a gamble on the psu which has no details listed.
    Make or model or if it even includes a PCI-E 6 pin.
    Pairing a 2500K with a H61 mobo isn't ideal.
    The Tt V2 is a bargain basement case,so no doubt the psu is too!
    Seems like a good deal but i think you could do alot better buying good stuff piece by piece.
  2. davcon said:
    You'd be taking a gamble on the psu which has no details listed.
    Make or model or if it even includes a PCI-E 6 pin.
    Pairing a 2500K with a H61 mobo isn't ideal.
    The Tt V2 is a bargain basement case,so no doubt the psu is too!
    Seems like a good deal but i think you could do alot better buying good stuff piece by piece.

    I know, but I am on a budget and that mobo is what I could afford even with a G850.
  3. I know you are on a budget, but that no name PSU is just trouble waiting to happen. Save up a few more dollars and get a good 500W PSU.
  4. abekl said:
    I know you are on a budget, but that no name PSU is just trouble waiting to happen. Save up a few more dollars and get a good 500W PSU.

    Ok, would this be responsible for a budget?
  5. Thermaltake's own specifications for that TT-450 power supply shows that it doesn't have any PCIe power connectors.

    http://www.thermaltakeusa.com/Product.aspx?S=1308&ID=2045#Tab0

    Thermaltake says that its an ATX 12V V2.2 PSU but that's a complete lie. If it were to actually comply with ATX 12V V2.2 specifications it would be able to deliver at least 30 Amps continuous on its +12V rail(s). The label on the side of the power supply says a maximum of 19 Amps on its single +12V rail. No wonder there's no PCIe connector(s) on that power supply.
  6. Best answer
    MrTehPenguin said:
    Ok, would this be responsible for a budget?

    For a system using a single Radeon HD 6850 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 24 Amps or greater and have at least one 6-pin PCI Express supplementary power connector.

    The OCZ ZS Series 550W (OCZ-ZS550W), with its +12 Volt continuous current rating of 38 Amps and with its one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration.
  7. Best answer selected by MrTehPenguin.
  8. ko888 said:
    For a system using a single Radeon HD 6850 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 24 Amps or greater and have at least one 6-pin PCI Express supplementary power connector.

    The OCZ ZS Series 550W (OCZ-ZS550W), with its +12 Volt continuous current rating of 38 Amps and with its one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration.

    Sorry for late reply, anyways thanks! It'll put me to about $770, but it's worth it and there's $75 worth in MIR.
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