[Solved] Power Consumption

Wondering

Is the Corsair AX850 850w psu enough to run the following stuff (peak not idle)

I7 2700k
MSI gtx580 Lightning XE x2 (3gb cards)
Asus P8Z68 Deluxe Gen3


Furthermore

Is the above psu capable of running this system if the 2700k were oc'd to 4.8ghz or even 5ghz?

Well, the system consumes 719W @ full load with i7 965 OCed @ 3.7, so the PSU should handle all just fine even with CPU OCed to 4.8.

But better upgrade to a 900-950W SPu if you don't want to push your PSU to limits and have more headroom for OCing your GPUs.

@vitornob, nVidia & AMD recommends higher wattage than needed to cover some certain stuff no need to be explained. But the fact that a high end system with a single GTX 580 draws about 470W. and test systems showed a maximum of 700W consumed in full load.

But you're right about OCing, if the OP will do some extreme OCing then a 900W is the best choice

Well I am fairly adament on a gold rated corsair psu which leaves me with the ax850 or the ax1200. newegg is sold out of the 1200 and its expensive and its way way way more than i need. Through my research I deduced that the 850 would be enough but that it would be very close which is why I came here. Some websites can be vague about their power consumption figures. Two 580's should eat up around 450w. I searched for the mobo and the processor and saw that the 2700k can eat up almost 300w when overclocked. I dont know if that was the mobo and cpu or just the cpu or mobo, cpu, and gpu. Just wanted to be sure. Think i'll go with the 850 and if its not enough (if the corsair h100 liquid cooler cant keep the 2700k below 80c at 5ghz) then i'll pay to restock it and get the 1200 when it comes back in stock.

If you want to objectively, accurately and scientifically determine what PSU power is required for your Vid card and PC in both watts and 12v rail amps., the forum Utility link below will show you how easy it is to calculate this information and objectively determine which PSUs are quality built, reliable PSUs that can meet your needs. Be advised that the available 12v rail amps. is just as important as the total PSU wattage. You need both to be correct.

http://www.tomshardware.com/forum/ [...] r-required

I can't find a review on the MSI Lightning XE but this shows two Asus DCUII's eating just under 450w. Please correct me if I am misunderstanding something.
http://www.guru3d.com/article/asus [...] i-review/8

The 2700k appears to use only a couple of watts more than the 2600k but can be overclocked higher. I doubt i'll try for higher than 4.8ghz.

The Corsair psu has a single 12v rail.

Lovely psu but it's white. Everything in my case is black and blue
Aesthetics are extremely important to me
Brand is extremely important to me
Everything is Asus/Corsair. The only thing that isn't are the gpu's and the only reason I allowed the MSI's is because they still match, they're dual slot instead of triple slot, and they're 3gb.

If you want more than 850w how about the seasonic platinum 1000w. http://www.newegg.com/Product/Prod [...] 6817151105

Thank ya sir. Newegg has deactivated the lightning xe's so I might have to bight the bullet and get em at tigerdirect now (FL resident so $90 in tax for the pair)