How much energy would I have to have for my computer?

No, even with overclocking. Assuming this is a quality Power Supply, acutally capable of outputting 700watts.

700W is enough . This link help u : http://support.asus.com/powersupply.aspx

-1 :-)

Couple of AA batteries more than enough, with 700w being overkill.

I got i5 3570 with the same GPU.

BF3 on max setting can't really push it much past 300W

Ok AMD is less power efficient but IMO 700W is more than enough.

Hi - If you already have a 700w unit, it is way more than enough.
A quality 500w (what realhardtechX suggests) is plenty, and
leaves some headroom. If you already have the 700w, please
insure that it is capable of delivering it's specs, check a review
or post brand and model here.

Tom

2 - 670's in SLI require only 750w realhardtechX and that has headroom not 1,000w

That's absolutely fine for that configuration...

The only time you should be thinking about bumping that PSU up to 1000W+ though if you were thinking about adding a second GTX-670 card and running them in SLI...

- AJ

For a system using a single GeForce GTX 670 graphics card NVIDIA specifies a minimum of a 500 Watt or greater power supply that has a maximum combined +12 Volt continuous current rating of 30 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using two reference clocked GeForce GTX 670 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 700 Watt or greater power supply that has a maximum combined +12 Volt continuous current rating of 45 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most important factor.

Better psu calc the check "overclock my cpu" and have fun..

http://www.thermaltake.outervision.com/

So I could use an OCZ ModXStream Pro 700W Modular High Performance Power Supply right?

And I'm using a Corsair Hydro Series Extreme Performance Liquid CPU Cooler H100i

Alright, thank you

Best answer selected by WaterKisame.

All that just to agree with me? Sheesh. Did someone misread the OP when I said "no" to "do I need more than 700w" ?