Hey peeps. Long time reader, first time poster 
I recently got an i5-7600k with an Evo 212x cooler, Noctua NT-H1 thermal paste, Asus Rog Strix 270H mobo and 16GB of Corsair Vengeance Platinum memory. I have (auto) overclocked the CPU to 4.7GHz with a v core of 1.4ish V (I know it's a bit high but have not had time yet to manually overclock, will probably do it this weekend).
When stress testing the CPU, the temperature constantly 'jumps' by about 15degrees C (58-73C) in a rhythmic pattern. Is this normal? I have a uploaded a pic here - http://imgur.com/a/Kpzu3
I will try to post a video to show fluctuation of voltages etc.

I recently got an i5-7600k with an Evo 212x cooler, Noctua NT-H1 thermal paste, Asus Rog Strix 270H mobo and 16GB of Corsair Vengeance Platinum memory. I have (auto) overclocked the CPU to 4.7GHz with a v core of 1.4ish V (I know it's a bit high but have not had time yet to manually overclock, will probably do it this weekend).
When stress testing the CPU, the temperature constantly 'jumps' by about 15degrees C (58-73C) in a rhythmic pattern. Is this normal? I have a uploaded a pic here - http://imgur.com/a/Kpzu3
I will try to post a video to show fluctuation of voltages etc.