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-   -   enough to SLI GTX 480s (http://www.hardwarecanucks.com/forum/power-supplies/47200-enough-sli-gtx-480s.html)

Your_friendly_gamer October 10, 2011 03:33 PM

enough to SLI GTX 480s
 
Hey guys, I have i7 2600k clocked at 4.5ghz at 1.36v. Is a AX850 good enough to SLI GTX 480's?

boggtrotter59 October 10, 2011 03:55 PM

Should be plenty of power.

Bond007 October 10, 2011 06:21 PM

I say its fine as well.

yycraven October 10, 2011 06:40 PM

Yes you have lots there, should be no issues.

Razamatraz October 11, 2011 11:43 AM

the AX 850 can do a fair bit above it's limit but you are bumping up close to max there especially with the OC 2600K. Are the 480s overclocked? Do you use them to crunch/Fold? What else is in the machine?

If they are stock 480s I'd put your max consumption (full load) with a couple drives at just under 800 watts...not the most efficient but well within the AX 850's limits.

enaberif October 11, 2011 11:50 AM

Quote:

Originally Posted by Razamatraz (Post 556487)
the AX 850 can do a fair bit above it's limit but you are bumping up close to max there especially with the OC 2600K. Are the 480s overclocked? Do you use them to crunch/Fold? What else is in the machine?

If they are stock 480s I'd put your max consumption (full load) with a couple drives at just under 800 watts...not the most efficient but well within the AX 850's limits.

Sandybridge Processors use almost nothing for power compared to older Core 2s. With a 850 you'll have no issues whatsoever on that system even if the processor is overclocked.

Arinoth October 11, 2011 11:56 AM

The 1366 socket uses more power then SB when overclocked, though so does the 480 compared to the 580. From this and my own personal experience I would highly recommend going up to a 1kW power supply if you plan to overclock everything.

At 1.375V vCore + 580s rather heavily overclocked themselves they can pull more then 950W from the wall.

enaberif October 11, 2011 12:03 PM

Quote:

Originally Posted by Arinoth (Post 556494)
The 1366 socket uses more power then SB when overclocked, though so does the 480 compared to the 580. From this and my own personal experience I would highly recommend going up to a 1kW power supply if you plan to overclock everything.

At 1.375V vCore + 580s rather heavily overclocked themselves they can pull more then 950W from the wall.

Uh.. he's running a i7 2600k silly boy.

G777 October 11, 2011 12:11 PM

To give you some idea; my 850W Seasonic powers 2x480's, 2600k@4.7 (1.45v), 2 pumps, 10 or so fans, and some lighting.

While running f@h on the gpus and -smp 7 on the cpu (90%)...draw is right around 700W.

Razamatraz October 11, 2011 12:40 PM

Yah, it probably would not cross 850 Watts, I hate running up to the edge of my PSU ratings though. Corsair says 950+ for that configuration.


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