i have hte swiftech 8501 setup. I'm getting like 43-47 degrees with it on my 2.6c (not overclocking) and it's NOT quiet. it's set up to spec..on an antec tru controll 55W. I have the chipset cooler in place. is there anything special i should have done with it to make it quieter? without any bubbles in the circuit, how can you tell the water's actually moving? i'll try and upload pics tonight when i get home from work.