Is 26.54A of my PSU enough for HD 7850

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GalibTheGamer

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Mar 26, 2013
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I currently have a Gigabyte E570 psu which is a 460Watt power supply, not a 570watt one. It has dual rails for 12V, each 17A. But the wattage of 12V is 318.5W. So actual amperage combined, is 318.5/12 = 26.54A.
So, will the PSU be able to run a HD 7850?
I might be OCing the HD 7850 too.

My specs are:
FX6100 @ 4.2GHz processor
8GB RAM
MSI-760GM-P21(FX) motherboard
2-320GB Samsung hard disk
1-Asus DVD writer
5-LED Fans

 
Solution
ko888
For a system using a single AMD reference design Radeon HD 7850 graphics card AMD specifies a minimum of a 500 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 27 Amps or greater and have at least one 6-pin PCI Express supplementary power connector. Some of the non-reference design Radeon HD 7850 graphics cards require at least two 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical...
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TheBigTroll

TheBigTroll

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Apr 15, 2012
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wouldnt do it. especially with how much power a fx chip draws at full load. and especially with a almost no-name brand (gigabyte isnt well known for psus)

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
 
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ko888

ko888

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Feb 18, 2009
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For a system using a single AMD reference design Radeon HD 7850 graphics card AMD specifies a minimum of a 500 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 27 Amps or greater and have at least one 6-pin PCI Express supplementary power connector. Some of the non-reference design Radeon HD 7850 graphics cards require at least two 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Overclocking of the CPU and/or GPU(s) will require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

The GIGABYTE Superb E570 (GE-E570A-C3), with its maximum combined +12 Volt continuous current rating of 34 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is sufficient to power your system configuration with a single AMD reference design Radeon HD 7850 graphics card.
 
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