2nd look is 850w enough?

[SslagleZ28]

I bought my PSU before I had my GPU picked out, I went with the hd 6950 with a 6970 bios flash and an overclock. Now in a month I want another one, to crossfire. I bought a Corsair AX850 PSU, is that enough to run my system. I have a chart i found but im not sure if its the power of the cards alone or if its the entire system


For testing power consumption, we took our test system and plugged it into a Kill-A-Watt power meter. For idle numbers, we allowed the system to idle on the desktop for 15 minutes and took the reading. For load numbers we measured the peak wattage used by the system while running the OpenGL benchmark FurMark 1.8.2 at 1280x1024 resolution.

 

[Ethan3.14159]

Yes, it is plenty.

That graph shows total system power consumption.

 

[SslagleZ28]

Yes, it is plenty.

That graph shows total system power consumption.

Will my overclock to 4.2ghz and 1.450volts affect it enough to make a difference? I tried using one of those PSU calculator thing but I know they are inaccurate.

 

[Ethan3.14159]

Will my overclock to 4.2ghz and 1.450volts affect it enough to make a difference? I tried using one of those PSU calculator thing but I know they are inaccurate.

You could overclock everything until smoke poured out. That PSU is definitely enough.

 

[SslagleZ28]

You could overclock everything until smoke poured out. That PSU is definitely enough.

thats what I like to hear thank you:good:

 

[Drenlin]

That's easily enough power.

For reference, this is a Kill-A-Watt:
http://www.newegg.com/Product/Product.aspx?Item=N82E16882715001

Those charts are showing power drawn from the wall. Assuming at least 80% efficiency, the crossfire'd 6970 rig is pulling no more than 477 watts from the PSU. Most likely it's a bit less than that.

 

[SslagleZ28]

That's easily enough power.

For reference, this is a Kill-A-Watt:
http://www.newegg.com/Product/Product.aspx?Item=N82E16882715001

Those charts are showing power drawn from the wall. Assuming at least 80% efficiency, the crossfire'd 6970 rig is pulling no more than 477 watts from the PSU. Most likely it's a bit less than that.

477w at crossfire, that seems kinda low

 

[Drenlin]

True

Maybe they already compensated for efficiency?