1) Open Task Manager so you can observe the CPU performance.. right-click the graph and change to "show logical processors" to make sure the right number of threads are there (should be EIGHT).
2) Make sure the CPU usage is already relatively low before starting anything (maybe 5% or so)
3) launch Unigine Heaven so you can record the average FPS to test later in case it changes (write down the settings you use and always use the same ones)
4) run the Intel CPU diagnostic to make sure you get a PASS
https://downloadcenter.intel.com/download/19792/Intel-Processor-Diagnostic-Tool
5) Use CPUID's HWMonitor or other reliable tool to monitor the CPU temp (CPU shouldn't throttle until closer to 100degC in desktop, though laptops can set...