With my stock cooler and the thermal paste that was on it I had to undervolt my cpu to 1.24v after vdrop under load to keep my temps at 60C or less. When I removed the stock heatsink I noticed only a small amount of the thermal paste had stuck to the cpu and wondered if that meant like 30% or less of the die was actually making contact with the cooler. When I switched to a zalman 9700 and applied AS5 my temps dropped SIGNIFICANTLY. At 1.32 volts after vdrop my temp was 80C with the stock stuff and I can up it to 1.38 after vdrop with a way higher overclock and still keep the temps just under 60C for load. Is there any way I could have possibly messed up applying the stock cooler? All the instructions indicated was to push the 4 pins down until they clicked which I did. I'm really happy my temps dropped this significantly, but I'm sure that something must have been wrong with the stock cooler to cause this. Also, when I was removing the stock cooler not all 4 of the pins removed as stated in the directions. I had to simply remove my motherboard, get pliers and tear the bottom of the pin apart to get it out.