mining with multi 7950's

[katodumisani]

hi there, i'm new here, i plan to mine with 4 x 7950 radeon cards, two or three such sets. i know calculators already, my question is what is a 'real' power consumption? thx, kato.

[davidhanson]

Hello Kato,

I have such sets, 3x7950 and 4x7950 (gigabyte cards) with 'Gigabyte GA-990FXA-UD3 AM3' mainboard and on Chieftec bps-1200c power supply it's like 850-900W on 3 cards and 1000-1050W on 4 cards.

Good luck,
Dave

[nordicbtcminers]

Hi Kato and welcome to the forum!

1 7950 takes app. 200-250W if i dont remember wrong
4 will then take app. 4 x 200W = 800W or 4 x 250 = 1000W

I haved choosed a PSU with at least 1000W, i rec. 1200/1250

also check so there is enough Ampere och each rail and buy a psu that can handle SLI or QUAD GPU setups  

[katodumisani]

thanks dave! thanks nordicbtcminers!
is that dependent on processors and memories? is it constant consumption?
kato

[davidhanson]

Athlon x2 and 4 gb ram.

[katodumisani]

dave, how do you cool your setup, what abut power consumption of that?

[davidhanson]

One 30-50 watts extra fan should be enough.

[r1nftw]

I'm using 3x7950 @corsair HX850 + Sempron x2 190.Great combo, no problems.