Best Power Supply for Gaming PC with dual video cards?

I will be investing in a gaming rig from cyberpower pc in the near future. I intend to get a system with dual video cards. Two AMD Radeon HD 6750 1GB GDDR5 16X PCle Video Cards. I was thinking that a 1200 watt power supply should be enough. But since Im so new to gaming systems, I probably need as many good opinions as well as advice as possible. What do you guys think? Is 1200 too much or too less? And can I get away with more inexspensive cards? I only want a system to play Lord Of The Rings online with ultra high graphics and no lag, period. My current system is crap for any kind of gaming. Any and all advise appreciated. Go easy on me, Im still learning =)|||You're far better off getting a much better single card, like the Radeon 6870 or 6950



And yes, 1200 watts is way overdoing it for lower end cards like that|||Single 6750:

" Minimum PSU Wattage Requirement: 400 Watt"



So a dual should have 200W more, so a 600W should run it just fine.|||450w-550w power supply will be more then enough.|||1200w is ludicrous overkill. The 6750 is the exact same thing as a 5750. They don't eat much over 100w apiece, if even that. You could run them both on a 550w power supply, although 600-650w would be dandy. A pair of 6750s seems to roughly match a Radeon 5870 in performance, so you should be just fine with those. However, bear in mind that a 6950 is going to be a tad faster and will cost about as much, and you can XFire a second one down the road. If you want to do that, then a 650w PSU would be the minimum for two of them.



And DO NOT cheap out on a PSU. Antec, Corsair, and Seasonic are all solid brands.