I should mention that the APU is a mere CPU now because of the GTX 760. And yes yes, I know it defeats the point in having a APU but the AMD is not a staying CPU.
So it should lower the load on temps because the GPU is working alone away from the CPU.
As for temps using the stock cooler, I was getting very strange reading the older it got, Dust or a faulty fan, When I got it, it ran ice cold, not over 30c, now the old stock cooler runs at 4000-5000 RPM in idle and makes a clicking sound, not only that but even with my cases great airflow the cpu was sitting at 69c in idle
I'm not sure if they are faulty readings but, what can you do lol.