This is my response from AMD.... When asking about the thread i have linked to sereral times already.
Response and Service Request History:
That specific thread is one that I am all-too-familiar with, to say the least. I was the original tech who was talking with Bubba Hotepp, and you can see our e-mail correspondence on page 8. Basically, the guide there is somewhat misleading. Tctl is a ridiculously confusing temperature reading that indicates the "safe zone" and is used by the motherboard for calculations on when it should start powering down the CPU because things are too hot. The 61C reading is for TCase, which is the temperature inside the physical CPU. This will be a higher reading than the CPU reading, which is at Tjunction, where the CPU and motherboard meet. TCore (CPU Core temperature) is a mathematically derived temperature based on the temperature at Tjunction, with input from Tctl as well. It's not an official reading, as it is mathematically calculated, but is a closer representation than the CPU temp which is often found where the CPU and motherboard meet, which is almost always cooler than the CPU temperature internally.
I struggle to follow a bit so if anyone can dumb it down a bit i would greatly appreciate it.