Hi - I recently tried to put a radeon hd6870 in my computer with no luck. my local computer repair shop guy said he did a search and some people were having compatability problems like me. nothing would come up on the dispay at all - ever. my comp is a 4gb ddr2, intel core 2 quad 2.5ghz asus p5n-e sli. I have an 8800 gt geforce in there but need a better card for skyrim for my kids. looking to spend under 200 - any thoughts would be appreciated.