Just a head up for those that are planning to get a Q6600 in a near future, I got a Q6600 for my GF's family and the batch code is L745A with a VID of 1,2250V which seems to be quite good... I didn't test it much but I just raised it to 3GHz and lowered the voltage to 1,2V which resulted in P95 stability.

The CPU is running on a P5K Premium along with some G.Skill 4GB PC2-8000