To be honest, all I want to do is water-cool the CPU, but there're two extreme options here: (since I'm configuring a XoticPC custom gaming desktop) H20 Stage 3 CPU Only (with only a 240mm rad), same for stage 4 and 5. Only stage 6 offers 360 rad + 240mm rad watercooling but it's CPU and GPU, no CPU only option. From what I've heard, 240mm rad is not enough to cool a six-core 5.2GHz processor