I'm looking at purchasing a new monitor to finally run a dual monitor set-up. My problem though is do I need a new video card to be able to game on my 27 inch (particularly Battlefield 3) while I run other programs on my 23 in.
My current is card is a 6870.
More aboutvideo card monitor purchase first
You'd be fine. It's not like you're stretching the game across 2 monitors, so it shouldn't be an issue.