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Thread: PSU for gaming rig

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    Default PSU for gaming rig

    Hello all,

    Planning on buying a new machine and the 1 part that's been stumping me for awhile has been the PSU. While I don't mind spending a bit more to ensure a safe overhead, I don't want to overspend needlessly either. As I've read quite a number of conflicting views, I thought I'd toss my setup out here and see what you all think.

    E6850
    EVGA Nforce 680I SLI motherboard
    4 GB of Mushkin RAM
    2x BFG 8800 GTS OC 640MB
    1x HDD
    2x Optical drives
    Lets just say 8 fans for overkill purposes.

    As I've said I don't want to overkill here but I definitely want to be safe. I've heard people say the Corsair HX620 is plenty, then I've heard that anything short of 700W and 50 Amps to the 12V rail will fry.

    Let me know if you need anymore info

    Any help is greatly appreciated!

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    Default

    Hmm i usually like to have at least 30% power to spare...in order for the PSU to run cool and efficiently. With that said, i think your PC, even overclocked, wont use more than 450W, probably less for being an dual core, so the sweet spot would be around 620W or more. The HX620 will run it like a breeze.

    Just for you to have an idea of high end systems power consumption:

    http://www.anandtech.com/systems/sho...px?i=2924&p=10

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    Yeah I originally assumed based on my parts that it should be enough. But I wanted to make sure considering I'll be dumping a decent amount of coin and 2 Vid cards in it.

    Any other takers? HX620 definitely enough?

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    It will be enough. But you might consider a higher output unit as you have an enthusiast grade system (you'll be probably adding/upgrading/overclocking hardware). The Ultra X3 1000W could be a good choice if you have it where you live. Wait for more answers before proceeding.

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    I built a somewhat similar system that never drew more than 400W from the wall under 3DMock06. Of course you can max out the system in other ways, but ahh well. Specs of my system:

    E4300@3GHz
    2GB RAM
    Nforce 650i SLI board
    two 8800GTS 320MB in SLI
    three HDDs
    two optical drives
    one system fan

    Draw your own conclusions. :P
    Zap
    Clan of the Bloody Fist

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    Awesome, I'll wait for more posts for sure. Was thinking about the Etasis ET850 if I needed the extra kick. Its less than $50 more expensive around here if my eyes did not deceive me.

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    Thinking about pulling the trigger soon. Was thinking maybe the ET850 or the Silverstone Zeus to be safe

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    Quote Originally Posted by Icewind View Post
    As I've said I don't want to overkill here but I definitely want to be safe. I've heard people say the Corsair HX620 is plenty, then I've heard that anything short of 700W and 50 Amps to the 12V rail will fry.
    For a pair of 8800 GTS cards, you'll only need 500W if the PSU is a single +12V rail design with at least 33A available on the combined +12V rails.

    Don't use a PSU with split +12V rail unless there's four +12V rails because you can easily put over 24A load on the +12V2 potentially tripping the circuit.

    The Etasis/SS Zeus 850W is overkill. Of course, there's nothing wrong with overkill.

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    Quote Originally Posted by jonnyGURU View Post
    Of course, there's nothing wrong with overkill.
    If there were, I'd probably be sitting in a straightjacket somewhere for my continued use of a CWT 1200W in a rig with an X2 3800+ and a single X1650 Pro

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    Quote Originally Posted by Oklahoma Wolf View Post
    If there were, I'd probably be sitting in a straightjacket somewhere for my continued use of a CWT 1200W in a rig with an X2 3800+ and a single X1650 Pro
    Ok now thats just insane. Obviously you werent taking your medication when you cooked that up

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