I'm not sure, if this is overheating problem here.
I suspect, this:
CPU 74C 74C
and this:
TEMP 74C 74C
are temps for video card, and this:
CORE 43C 46 - 51C
is CPU.
If that's true, 74C is not tragic for GPU
I may be wrong though
Download, and install
Everest Ultimate Edition 4.6:
http://www.lavalys.com:8081/everestultimate460.exeEnter following registration code (Help>Enter product key) to make it fully functional:
RHGJE-54X47-HML9C-V498I-UUMVI(it's all legal, the above version has been recently offered as a free download)
Expand
Computer folder.
Click on
Sensor.
Post all info from there.