Novuake said:
In general you should get the best SINGLE AMD graphics card since crossfire has many issues.
geofelt said:
AMD drivers are not doing well in cf so far as lagging/is concerned. FPS benchmarks look fine.
There is hope that will change.
My suggestion is to stick with a great single card as long as it will do the job.
I suggest you sell the 7850 in favor of a much stronger card like the GTX780.
A 7970 or GTX770 would be only a modest improvement.
But... how good do you need to be? at 1080P a modest upgrade should be very satisfying.
If you are looking at triple monitor gaming, or a 4k monitor, all bets are off.
I'm trying to spend the least amount of money really. Buying a new 7850 would be cheapest, but how would it compare against a 7970 or GTX770? And would that be good enough for 1080p gaming?