In our series of test, a consistent ambient temperature of 26c and every mount and dismount of the tested heatsinks will have a new applied layer of thermal paste.
First up, the Stock QX6850 Heatsink fan.
Idle Temperature (Stock CPU Voltage)
Load Temperature (Stock CPU Voltage)
Idle Temperature (1.45v CPU Voltage)
As you can see, all 4 cores have a slightly different temperature and there is a significant difference between load , idle , voltage upped load and voltage upped idle.