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PSU for 7970CF

Last response: in Components
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January 18, 2013 11:45:33 PM

Here are the other specs

i7 3770 3.5GHz(May overclock in the future)
2x HD 7970 3GB - CrossfireX
8GB of DDR3 Memories - (HyperX or Vengance, depends on what is available at the store when I buy)
256GB SSD(still haven't decided what brand, I'll pick up the one that they have there)
500GB 7200RPM Seagate
1.5TB storage drive - 5400RPM
Several Coolers(4-5), no water, just air.

the case is a mid-tower NZXT Gamma, AND I'M NOT CHANGING IT, ITS THE SOUL OF MY COMPUTER, I USE IT SINCE IT WAS RELEASED

PSU- I still haven't chose what will I get, apart that its going to be from Corsair - I'm thinking about the HX1050, which will be enough for my two GPUs or the AX1200i, but I think its not really worth it ($120+)

What do you guys think?

More about : psu 7970cf

a b ) Power supply
January 18, 2013 11:57:14 PM

Hi :) 

You dont need anything that big...

I have a 7990 and use an 850 OCZ ...more than enough wattage...same for you...

All the best Brett :) 
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a c 1189 ) Power supply
January 19, 2013 1:45:40 AM

For a system using two Radeon HD 7970 graphics cards in 2-way CrossFireX mode AMD specifies a minimum of an 750 Watt or greater power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 58 Amps or greater and have at least two 6-pin and two 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C is the most important 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 you are trying to achieve.

The Corsair AX860i Digital ATX Power Supply ( SKU# 75-001303 / CP-9020037-NA ), with its maximum combined +12 Volt continuous current rating of 71.6 Amps and with six (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with two Radeon HD 7970 graphics cards in 2-way CrossFireX mode.

The Corsair AX1200i Digital ATX Power Supply ( SKU# 75-000784 / CP-9020008-NA ), with its maximum combined +12 Volt continuous current rating of 100 Amps and with six (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with two Radeon HD 7970 graphics cards in 2-way CrossFireX mode. This one is enough to handle three Radeon HD 7970 graphics cards in 3-way CrossFireX mode.
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