PSU for x2 HD7990 ?

[leftcheats]

Hi,

ive got one HD7990 and just wondered whats the PSU required for x2 of these cards - ?

this forum is normally quicker than google - hence the post -

4770k
x2 1tb sata hdd
x2 256 ssd

 

[Tonester0011]

about 400w per card @stock.
1050w SF will be plenty, though a 1200w is only a few pence more

 

[pugheaven]

I'm running a 1200W Gold Antec for my two 7990's... runs fine normally and overclocked to 1100/1600mhz

 

[martinoheat]

2 x 7990 is a monster setup!!

Is that for gaming/mining/something else?

Also, are you water cooled? If not, what kind of temperatures do you get?

 

[pugheaven]

Well, if I run standard 1000/1500 then I can de-volt 100% stable to 1.125v and the maximum it'll run at is 85C under load for hours with Heaven.

To run over default clocks, I need to up the volts. So, if memory servers, at standard 1.200 volts, under load it'll run 98C... so sacrificing an 8% increase in benchmarks... keeps my GPU's cool and solid and will last a lot longer.

All air cooled.... basically I love quadfire... had 6990's before this... and now the 7990's and may go quadfire 290x2's later if any good...

Reason, not sure, just love having power... pathetic really ROFL

 

[Uncle Petey]

Two 7990's (@1.085v 1025/1625) + HDD / Celeron CPU and a D5 + a bunch of fans pulls about 1035w at the wall here if that helps.

 

[leftcheats]

cool, cheers for info guys

 

[Diagro]

Dont do it.

Quad cards dont work well together.
Better off getting 2 or 3 290x