Got my Q6600 726B Vid:1,23 and its a real nice chip, does 3,8Ghz 1,44v Water cooled. But it does get hot, max temp when priming is 68c on the hottest core, next step is to lower the Vcore to see where it fails.
And i am running it on the Gigabyte P35 DQ6 with 4x1 Crucial BallistiX PC6400.