i recently installed a asus m4a79 delux mobo&the phenom 940. but my graphus card is a bgf 9800gtx +. I also bought a hd 4870 single card. my question is should i keep the 9800 or would i e better off using the 4870.? the mobo suppots cossfire,and to run that im looking at another hd 4870. i havent oc'd the phenom as yet but plan on it when i get the best graphics. what do u think.