I have to choose between two processors, but don't know which one to choose. I know these processors are old, but I really are not sure which one to keep. Either my Intel Q6600 (Kentsfield) or the Q9400 (Yorkfield). The Q6600 is an overclocking monster, although the Q9400 overclocks to the same level. The Q6600 has way more transistors on the die than the Q9400, but that wouldn't make a big difference since they perform very much the same in any benchmark. I am thinking of keeping the Q9400 since it is a 45nm processor, runs cooler, uses less power, has SSE4.1 instruction set and does not overclock too bad. My Q6600 could overclock up to 50% and this one slightly less, but it has a higher core speed anyway (not much). They perform about exactly the same in the benchmarks (when overclocked to their limits). Any one with experience in both these processors can maybe give me a hint?