Building a gaming rig in just about a week, need graphics card advice!

Hello all,

First of all I want to say this is my first post, I'm not even sure if I'm posting in the right place and if I'm not I hope a moderator can move the topic to the correct forum.

Anyways I'm a huge fan of the daily, been watching as many as I can over the past 6 months or so and I am really getting into Starcraft and just generally having more fun with it than I used to with Brood War. But I have a dilemma, my laptop I bought for college is just simply not powerful enough to perform the way I want it to in game, not just Starcraft, but in multiple games that I like to dabble in such as WoW and BF3. So I've decided that with my upcoming internship, and last summer's internship money I'm going to build my own desktop!

That is where you all come in; I am looking at a build that has a 3770K with a Asrock Extreme 4 MOBO and 8GB of ram all inside of a (hopefully very sexy after I CNC a zerg logo out of the side and front door panels) NZXT Phantom Full Tower Case. But I am currently at a loss as to which video card I should be leaning towards? My budget isn't too much of an issue, but I really don't want to drop $400 on a Gigabyte 7970 if I can get a Sapphire 7950 and get only minutely smaller FPS in game. I was wondering if there weren't any people out there in the "Day9iverse" that could help me out on my quest to being able to finally play SC2 and WoW (My two favorite computer games of all time) on a nice 24" 1920x1080 screen at Ultra settings. Please help, I've never been past low settings! The game might be all the better if I can finally see those 3D unit portraits on the UI lol

Anyways thanks for any help I can get from you all, and good luck to you all!

TLDR: 7950 or 7970 @ 1920x1080 resolution on a 3770K OC Platform?