Generally its said that 1.55v is max on air for single core and 1.6v for water but would people say thats the same for the dual core as these run a lot hotter (for 24/7 use). Currently at 1.5v at 3.1ghz so already better than my single core cpu but temperatures are very good - 4 degree difference between idle and load (just going over 30 on load in the evenings in this weather)