My set-up:
CPU Block - EK Supreme Acetal
North Bridge Block - Swiftech MCW30
Radiator - Swiftech MCR220QP Dual 120MM Tri Cools @ high speed setting, custom painted white
Reservoir - Swiftech MicroRES V2
Pump - Danger Den DD-CP Pro
Tubing - Primochill Primoflex 1/2" ID / 3/4" OD Tubing, Black w/ 3/4" UV Reactive Red Anti-Kinking Coils
Coolant - Distilled Water, with Switech Hydrx Additive
Loops order is: Pump<Rad<CPU<NB<Res<Pump
Results with MX-2:
Ambient - Approx 20C
Idle - Core 0/1 - 32C
Core 2/3 - 29C
Load - Core 0/1 - 41C
Core 2/3 - 38C
Results with IC7:
Ambient - Approx 21C
Idle - Core 0/1 - 31
Core 2/3 -29
Load - Core0/1 - 39
Core2/3 -36
So, results here are basically no change with idle temps, and load temps gave me 2C cooler results. I also have a feeling that my bedroom has warmed up a tad bit since I tested the MX-2, so there may have been more of a difference that way.