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Earthwatts 650w psu goode enough for a 7950?

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  • Power Supplies
  • Graphics Cards
  • Components
Last response: in Components
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October 7, 2013 7:23:09 PM

I just bought a 7950 with the assumption that 650 watts is enough. Google searching if it is was an undisputed yes but looking at the newegg reviews for the specific psu (not that reliable of a source I know) it seems that nobody mentioned using it above a 7870, or that you should use it for beefy gpus. However, psus aren't my forte, so I'm asking you guys. Rest of my specs are in the sig. I'm never going to overclock the cpu as my motherboard has no vrm heatsinks but I may overclock the 7950, assuming I have the juice to do so.

More about : earthwatts 650w psu goode 7950

a b ) Power supply
a b U Graphics card
October 7, 2013 7:30:10 PM

As long as your PSU has at least 25A on the +12v rail(s), you should be fine. 30-35A would be better to allow for some headroom/overclocking.
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a c 273 ) Power supply
a c 270 U Graphics card
October 7, 2013 7:33:27 PM

The Antec EA650 is a very good unit and plenty of power for an HD 7950. The 7950 only needs a 500w PSU.
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a c 1218 ) Power supply
a c 578 U Graphics card
October 7, 2013 8:12:11 PM

For a system using a single AMD Reference Design Radeon HD 7950 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 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors. Some of the non-reference design cards require one 6-pin and one 8-pin or two 8-pin PCI-E 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) may 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 Antec EarthWatts 650 (EA 650) power supply unit, with its maximum combined +12 Volt continuous current rating of 45 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with a single Radeon HD 7950 graphics card.
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a b ) Power supply
a c 198 U Graphics card
October 7, 2013 8:16:17 PM

Should be plenty.
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Best solution

a c 86 ) Power supply
a c 119 U Graphics card
October 7, 2013 8:20:25 PM

ko888 said:
For a system using a single AMD Reference Design Radeon HD 7950 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 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors. Some of the non-reference design cards require one 6-pin and one 8-pin or two 8-pin PCI-E 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) may 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 Antec EarthWatts 650 (EA 650) power supply unit, with its maximum combined +12 Volt continuous current rating of 45 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with a single Radeon HD 7950 graphics card.

You need to make a thread covering a variety of common cards :)  Then it can be pinned to the top of the Graphics and Display section.

That would save lots of questions about power supplies. Just remember to cover that your suggestion is for a moderately loaded system and lighter ones may need less while highly(more likely insanely) overclocked ones may need more.
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