Thats total BS that you need to upgrade a videocard to run UT2K7.
A 6800GT (or GS, whatever) runs today's best games on Med or high. A GeForce 7 card runs today's games maxed out.
When UT2K7 comes out, a GeForce 6800GT will run it low or low-end Med. A GeForce 7 will run it Med. And a GeForce 8 will run it high.
No SLI req.