I bought a GTX 660 SC on ebay new for 200$ and a few days later learned the competitor is a radeon 7950. I looked on new egg and for 25$ more i could have got the radeon that has 1 gb more gddr5 and is 384 bit on top of 3 free games. I noticed though the core clock and memory clock are both considerably lower than the 660 SC, so my question is how much better(or worse) is the HD7950.