Firstly do you need an OS??
Secondly,why an NVIDIA GPU?? BF3 is AMD sponsored. With an HD5850 1GB you can play Flight Simulator X at 5760X1200 on higher details:
http://www.hardocp.com/article/2010/...mance_review/6
An HD6870 1GB is faster and costs between £130 to £140. Also,unlike with the Nvidia cards you can run multiple displays in a panoramic configuration during gaming on one card.
Beware of listening to any of the old wives tales about AMD graphics cards.
Don't worry, I shall give out words of Moose inspired wisdom!
Oh,wise Moose of the East.....CRASH!!