I'm going to be building a new gaming rig soon, and was looking at a number of different AMD Phenom II quad core black edition processors. From what I've heard, the 955 black edition is a great choice. However, what I wanted to know is how much better other processors such as the 965 and 970 would perform in games such as Skyrim. Are they worth the extra money, or should I just stick with the 955. I will probably be using a Radeon 6850 with whatever CPU I get.