Quote from: Frogwithcancer on September 06, 2013, 01:04:33 PM

Hi all

plugged in my 7950 and my 6850 and it worked. I was measuring wattage from the PSU and mining with both put it very close to the limit.
I could turn down the intensity but in the end i took out the 6850 as it's only getting 218KHs at I17 and overclocked as much as possible.

Might get a new PSU and another 7950 then setup a separate rig with some old components and the 6850 and 5850 with my current PSU.

What would people recommend for a PSU for 2 7950?
750W or 850W

I was looking an an XFX 850W PSU but wanted to know if they are any good. Looks like they are made by seasonic like Corsair ones are.

Any recommendations?

How are you getting the limit? If it shows 600 watts at the wall, you are not at the PSU's limit. Power supplies are rated by how much DC power they can put out, not by how much AC power they can pull from the wall. This is where inefficiencies come in. If your 80% efficient power supply is pulling 600 watts at the wall, its only doing 480 watts DC. When your power supply is pulling 750W at the wall, then it's at the limit since it'll be doing 600 watts DC