I have an EVGA 8800 GTS 640 MB, and have the HR-03 installed with the ram heatsinks stuck on with Arctic Alumina. I let ATItool run to find my max memory clock and at around 1000 MHz, I went and stuck my finger on the little heatsinks under the heat pipe. It seemed way too hot, but I've never done this before. Also I read of people pushing their memory clock rates to about twice that. I'm afraid that if I keep going till I see artifacts I'm going to fry it. Should I get some kind of thermometer and stop when the ram gets to a certain temp, or am I worried about nothing?