Cheers mate, it really shows off the Sabertooth
I haven't setup the Corsair H100i properly yet, I'm just testing it using the motherboard fan headers (this Sabertooth has CPU and CPU_OPT headers) and Thermal Radar.
At the moment I have the fans spinning very slow around 600 rpm and I'm getting roughly the same temps idle 25 oC, and I've lost about 10 -15 degrees under load.
I'll have a proper look at setting up a fan curve in Thermal Radar tomorrow.