I have my dad's 2100 Tbred A at 2.02 on the stock heat sink with AS3 on it and on the crappy NB passive sink that came on the MSI board. Sitting at 50 - 54C at full load depending on room temps. There is only 2 case fans on it too, 1 front 80 and 1 back 80. Needs real cooling down the road but it's possible with the stock heat sink.