I currently have a E6600, and would like to move up. I'm not sure what would be the next step for me though. What I want is a pretty noticeable increase in performance, so a E6700 probably won't cut. I'm thinking X6800, or should I go with a Quad-Core like a Q6600? For awhile now I've been having overheating issues while the computer has been on load, for instance playing World Of Warcraft. I assume a X6800 is going to run even hotter than a E6600, but I plan on buying a much better heatsink and fan (and I just bought some Arctic Silver 5 to use) than the stock one. I would go ahead a do that for my E6600 since I believe that to be the problem with the heating issues, but I would like to just go ahead and upgrade anyways.