can you explain this horrific temperature?

is this real?

drb0iq.jpg
 
Solution
Unlikely unless room temperature is about -20°C .
The HD7480D is what used in an A4-4300 APU, I suspect that the iGPU doesn't have its own temp sensor so Kombuster is just glitching out. Go by your CPU temperature.

That's my room temperature, but without the '-' sign 😛.

Is there any good software to monitor CPU temps? However I'd doubt that it's bugging out like you told me. Temps rises to 14-20C under a typical load as normal GPU does.