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Minimum PSU for Crossfire HD 7790?

Last response: in Components
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September 28, 2013 7:46:34 AM

Hi,
I currently have this system setup.

Intel i5 - 4670
ASrock - H81M Motherboard
2GB + 8GB DDR3 RAM
1x Sapphire HD 7790
500 Watt PSU

Im planning on adding another 7790 and crossfire it with my existing one. So I want to ask what is the minimum PSU wattage that I am going to need? And yes I am aware I need 2 PCIE-2.0 6 pin cables.

Thanks in advance,
Ronny

Im new here, please bare any typos and mistakes I make. :D 

Best solution

September 28, 2013 7:59:44 AM

AMD recommends 600W or greater.

http://www.amd.com/us/products/desktop/graphics/7000/77...

AMD 7790 GPU in FULL Stress = 179W
CF=358W

I5 4670k=125W at stock clocks

Thats already 483W just for the CPU and 7790 in CF
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September 28, 2013 8:01:37 AM

So 600 - 650 will do the job right?
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September 28, 2013 8:06:27 AM

Ronny927 said:
So 600 - 650 will do the job right?


Yes. i have the XFXPRO 650Watt and used CF 7870 before with no problem
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September 28, 2013 8:12:33 AM

ifreestylin said:
Ronny927 said:
So 600 - 650 will do the job right?


Yes. i have the XFXPRO 650Watt and used CF 7870 before with no problem


Thanks man.
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