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650w PSU enough for x-fire 7950's ? - Page 2

post #11 of 44
For future proofing get a PSU with atleast 65Amps if you want to run Tri-Fire X, maybe even 70Amps


^^^ What i just said
     
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post #12 of 44
Quote:
Originally Posted by OldChap View Post

For me 2 x 5870's on an overclocked to 4.0 i7 920 pulled 680watts from the wall on a seasonic x 650.

Even though you are talking newer tech I feel that if you intend to overclock both rig and cards you need to consider getting a bigger psu in the 750-850 range.

It would be more efficient too.

Yep,you must allow the PSU to breath,not stress it to the limits.
   
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post #13 of 44
Thread Starter 
Quote:
Originally Posted by AndyM95 View Post

If it's a good PSU then yes that's enough, what power supply do you have?

I have a Thermaltake EVO_Blue 650w.
Has some decent reviews and has never missed a beat when it powered my OC 955be system with a 7950.
I plan on getting a Corsair 1200w later (i wanna TEC cpu block and a third 7950).
So it should be ok ? That's excellent news B-)
Thanks for the helpful info +reps
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post #14 of 44
5870's are much more hungry compared to 7950's. Newer cards give much more for less energy.
   
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post #15 of 44
^^^^ Agreed
     
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post #16 of 44
Quote:
Originally Posted by Grmadness View Post

5870's are much more hungry compared to 7950's. Newer cards give much more for less energy.

This basicly, if you really wanna waste that money on extra the wats then get a decent 700W, that will never run out on you. ever.
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post #17 of 44
I measured my rig yesterday

i7 @ 4.63GHz (1.25v) + HD7950 (1.06V core / 1.6V mem) 1130/1900

Linx = 220W
Linx + Furmark = 475W draw of the wall.
Idle 60W.

I wouldn't put a second HD7950 in.
post #18 of 44
Quote:
Originally Posted by glina View Post

I measured my rig yesterday

i7 @ 4.63GHz (1.25v) + HD7950 (1.06V core / 1.6V mem) 1130/1900

Linx = 220W
Linx + Furmark = 475W draw of the wall.
Idle 60W.

I wouldn't put a second HD7950 in.

http://www.techpowerup.com/reviews/Corsair/AX860i/2.html

This will handle 3 GTX680 with NO EFFORT. Have seen it with my own eyes. Just for future upgrades... It beats most 1200W PSU's I know of.
   
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post #19 of 44
Quote:
Originally Posted by Grmadness View Post

http://www.techpowerup.com/reviews/Corsair/AX860i/2.html

This will handle 3 GTX680 with NO EFFORT. Have seen it with my own eyes. Just for future upgrades... It beats most 1200W PSU's I know of.

I wonder if seasonic make those for corsair.. Because the specs and max load @ 1000watts are exactly what Seasonic X850 Gold psu delivers..

That yate loon fan can get loud btw..

For future reference my OCZ 750 can do

3770K @ 4.8 1.46v
7970 @ 1300/1700 + 7950 @ 1300/1700

No problems..
Edited by zGunBLADEz - 1/28/13 at 11:15am
post #20 of 44
Quote:
Originally Posted by Grmadness View Post

http://www.techpowerup.com/reviews/Corsair/AX860i/2.html

This will handle 3 GTX680 with NO EFFORT. Have seen it with my own eyes. Just for future upgrades... It beats most 1200W PSU's I know of.
It will handle 4 680s quite happily, that PSU is a beast.
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