I've been using the stock heatsink on my E6600 for over 1.5 weeks - with the Gigabyte DS3, and getting good results, always under 40C or right around there.
After spending all day working on my computer, I went to check my CPU temp, just to see what it was at... 72C!!! I immediately shut down the machine and checked the BIOS settings, thinking maybe that Gigabyte's Easytune was having issues, but the BIOS confirmed the ridiculously high temperatures.
I then shut down and did a physical check of the HSF - only to find that it had UNSEATED on one of the corners, preventing it from making the proper contact with the CPU. I popped that corner back into place, and my temps are back fine now...
Something to be aware of!
edit: 20 minutes later, it's now idling at 25C.
After spending all day working on my computer, I went to check my CPU temp, just to see what it was at... 72C!!! I immediately shut down the machine and checked the BIOS settings, thinking maybe that Gigabyte's Easytune was having issues, but the BIOS confirmed the ridiculously high temperatures.
I then shut down and did a physical check of the HSF - only to find that it had UNSEATED on one of the corners, preventing it from making the proper contact with the CPU. I popped that corner back into place, and my temps are back fine now...
Something to be aware of!
edit: 20 minutes later, it's now idling at 25C.