Optrons are the way to go.
I have some Optron 146's on DFI motherboards running 2.950Ghz (950Mhz OC) on stock 1.35 volts.
All systems stable in 12 hour tests.
I use PC Powercooling 510-ASL,G.Skill ram and Thermalright SI-120 coolers all set in CoolerMaster cases.
CPU's run 2C over room temps with Silverstone FM-121 fans for cooler and rear of case (fan grill on case's removed for 100% airflow).