well ive got my h20 setup installed...and its running much cooler...but I seem to have hit a CPU limit @ 3.45 or so. It will run 3.45 nice and stable @ 1.4V, (266mhz * 13) but wont run 280 even with 1.6V....really odd.

That chipset heatsink gets *hot* though...I may slap a fan on it and see if that helps.