So I have a 512mb 4870 Asus video card and currently run a samsung 22" monitor. What is the biggest monitor I can go without running into issues. We play some video games (L4D and WOW) on reg. settings. I was thinking of hooking up to a 32" Vizio T.V. is this too much should I crossfire the card or go to the 4890 or do I ave to go with the 5870?