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Power supply selection

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January 11, 2012 9:50:36 PM

Hello,
building a decent rig and need to know what psu to pick up. system build is:
asus sabertooth 990fx mobo
amd 1100t 6 core black edition
hyper 212 plus cooler
antec air lanboy case
16gb 1600 ram
two radeon hd 6770's


i plan on mild overclocking of processor and gpu's

not sure on wattage/rails/amps etc... can someone give me a good idea?

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a c 667 ) Power supply
January 11, 2012 9:59:10 PM

A quality 600-650 watt would do but 750watts are not much more expensive and would allow for a midrange GPU upgrade in the future. Seasonic, Corsair and Antec are the most recommended brands followed by XFX and OCZ.

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a c 1107 ) Power supply
January 11, 2012 10:09:36 PM
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For a system using two Radeon HD 6770 graphics cards in 2-way CrossFireX mode AMD specifies a minimum of an 600 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 35 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.
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January 12, 2012 1:20:43 AM

thinking about OCZ ZS Series 650W 80 Plus Bronze Power Supply, should be sufficient for small overclocking and crossfire?
a c 1107 ) Power supply
January 12, 2012 1:30:12 AM

senjurio said:
thinking about OCZ ZS Series 650W 80 Plus Bronze Power Supply, should be sufficient for small overclocking and crossfire?

The OCZ ZS Series 650W (OCZ-ZS650W), with its +12 Volt continuous current rating of 46 Amps and one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, will be more than sufficient to handle two Radeon HD 6770 graphics cards in 2-way CrossFireX mode and handle some overclocking.
January 14, 2012 10:37:01 PM

Thanks guys, think im actually going to go with the ocz fatality 750. should i be able to get away with a 430w psu that i have in my old desktop for the time being? only running one gpu anyway... i KNOW it cant handle both. have to order the psu wednesday when i get my moneycheck.
a c 1107 ) Power supply
January 14, 2012 11:21:47 PM

For a system using a single Radeon HD 6770 graphics card AMD specifies a minimum of a 450 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.

If your 430 Watt PSU has a combined +12 Volt continuous current rating of 24 Amps or greater then it should work.
January 14, 2012 11:59:08 PM

Thanks again, i guess ill give her a shot. whats the worst that could happen?
a b ) Power supply
January 15, 2012 2:14:27 AM

senjurio said:
Thanks again, i guess ill give her a shot. whats the worst that could happen?


Not that it will, but the worst would be the psu blows up, and takes all the components of your computer with it...

January 15, 2012 6:56:00 PM

LOL got her up and running on the old 430. running pretty well so far just bone stock, no oc, and 1 6770 hooked up. Waiting till i can get the fatality 750 here so i can start really playing around :-) Thanks again for all of your help everyone!
January 15, 2012 6:58:30 PM

Best answer selected by senjurio.
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