Since switching the rear fan to intake the chipset temps have been around 60C, I'm happy with that.
CPU temps haven't been much of an issue with the H100 but as the volts are going up the fans are getting louder!
Might have to considor some replacement fans that are a bit quieter if I'm going to keep it ramped up.
@4.8 with 1.32v it was nice and quiet, I may well just drop it back down to that for long term use.
The bonus is with this setup is being able to run the OC with Speedstep using the offset voltage, therefore prolonging the life of my cpu.