Actually the koolance is dead on correct for waterblock temp which is what it measures. If you go by underside cpu temp which is what most mobo's read it is 9F off which puts it at 90F cooling the overclocked 9800 pro and also the overclocked 2500+, so no I do not think I will have any fried components anytime soon with those great temps for both units both being cooled! Also yes I did go with an external powersupply because the stock 200W does not cut it with all the stuff I have onbored, I may go dual stock supplies soon, or mabey not