“So, once I'd sorted out my power supply problems with the Pi I wanted to give it a test to give myself confidence that it is now stable and I could continue in my Pi quest.
With the heat sink installed, which is very easy to do, it has been running a soak test for the last 4 days (200 odd hours) with no problems at all. We're now in the middle of a heatwave here, and the room it lives in is upstairs and really not that cool - a good test methinks.
The heat sink is warm to the touch, but definitely not hot enough to say Ow! Previously the IC was very hot to the touch.
So well done the heat sink, I can now move on with confidence.”