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XFX 650w Sufficient for Crossfired 6970s? - Page 2

post #11 of 25
Quote:
Originally Posted by Vuashke View Post

the worst thing thatll happen if he pushes it too far is that his psu will turn off lol


My XFX 650W sizzled and went up in smokes. I had to RMA it. :( This is why I splurged on a AX850. This way I won't have to worry if my  PSU can handle my future SLI setup.

 

Also, to those who run a 600W system on a 650W system. I would suggest that they upgrade their power supply. The setup might run for a few weeks but after that, the PSU might just give up. That's what happen to mine.


Edited by listen to remix - 2/17/12 at 3:15pm
    
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post #12 of 25
atikmdag.sys can be caused by alot, most of the time its due to bad drivers from AMD's side, i've had the problem from the day i got 3 6970's, even with a 1250W PSU i get it every now and then, i've got a power meter hooked up and never goes pass 1000w during gaming so that should be OK.

With a good 650 i think you're OK, i would assume that your BSOD is caused by the drivers, i find the late 11 drivers better and more stable then the 12.x drivers.
post #13 of 25
Quote:
Originally Posted by listen to remix View Post



My XFX 650W sizzled and went up in smokes. I had to RMA it. frown.gif This is why I splurged on a AX850. This way I won't have to worry if my  PSU can handle my future SLI setup.

Also, to those who run a 600W system on a 650W system. I would suggest that they upgrade their power supply. The setup might run for a few weeks but after that, the PSU might just give up. That's what happen to mine.

Then yours was a faulty unit and it had nothing to do with load if i'm watching your sig rig.
Man, a 300w PSU could easily handle that system...
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post #14 of 25
a decent psu can run over its rated wattage without any troubles, so 90% of its rated capacity will be fine (unless you were unfortunate enough to get a dodgy unit)
post #15 of 25
crossfire 6970 stock with OC'd 2500k would pull around 600watts
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post #16 of 25
depends on what hes doing. at that voltage his cpu would only be using about 60-65w stressed in prime, and maybe half that in most games. 6970s do consume alot of power if pushed in furmark with powertune all the way up, but in games i dont think 0% powertune would really be a limiting factor unless you have high overclocks. TPU puts the stock power consumption of the gpus at 180w during 3dmark (more in furmark obviously, but furmark is furmark) which is pretty reasonable when compared to games
post #17 of 25
You'll need 700w to run HD 6970 Crossfire. HD 6950 Crossfire, however, only needs 600w, which the previous poster referred to. Get a 750w PSU from Corsair and you're good to go.

By the way, 700w is the minimum for HD 7970 Crossfire with overclocked CPU. 750w is the best bet for you, since it'll be prepared for future additions.

Good luck.
Edited by Empr1ze - 2/17/12 at 11:49pm
post #18 of 25
Quote:
Originally Posted by Imprezzion View Post

Then yours was a faulty unit and it had nothing to do with load if i'm watching your sig rig.
Man, a 300w PSU could easily handle that system...

This is a pretty stupid statement... I suggest you stop posting in PSU threads if you don't know what you're talking about for the sake of the OP.
post #19 of 25
300w would be really bad for crossfiring a HD6970, lol.
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post #20 of 25
Quote:
Originally Posted by Empr1ze View Post

This is a pretty stupid statement... I suggest you stop posting in PSU threads if you don't know what you're talking about for the sake of the OP.

i believe hes talking to the guy with the GT 240 + phenom, not the crossfire dude
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