Rapidly fluctuating CPU temperatures - need help please.

Hello, so I'm having an issue with my CPU temperature, it's fluctuating 20-30 degrees whenever I actually do anything on my computer and by that I mean if I open a game, browser, watch an online stream or a video on youtube, If I exit out of them it drops dramatically and within seconds. The temperatures are going between ~20 degrees Celsius idle and if I open a game or whatever it spikes up to around ~45 degrees Celsius and if I have say, a game like World of Warcraft open and a browser it goes to 50-60 degrees Celsius depending on what is open on the browser, it's doing this within seconds and I don't really know why. All I can think is maybe a sensor on my motherboard is broken?

Oh and I'm using Core Temp to monitor the temperatures.

Anyways, here's PC spec's:

AMD FX 8350 not OC'd, with Stock cooler (getting a new one in a week or so because this stock one is ridiculously noisy)
Gigabyte 970a-DS3 motherboard
8 gigs of patriot ram 1600 speed
Gigabyte GTX 650 graphics card, no issues here
700 watt power supply
120 gig ssd, no issues there
Corsair 200R case
Currently 6 fans in my case 2 on top and 1 in back are exhaust, 2 on side and 1 in front are intake.

If you need anymore information please let me know and I'll do my best for yah.