My current i5-2200K I know is old but has been perfect for me with any game I throw as it running will up until recently when The Division was causing me game slowdowns with CPU despikes (speed lowering) on the task manager monitor.
So I did some testing with Prime95 and OCCT and noticed the same CPU despikes on the monitor that starts to happen after a few minutes of it being at 100%.
I have not noticed it on other games or processes that has been CPU intestive recently.
Link to an image of OCCT report when the drops happen
http://imgur.com/ThIRB2y
So I did some testing with Prime95 and OCCT and noticed the same CPU despikes on the monitor that starts to happen after a few minutes of it being at 100%.
I have not noticed it on other games or processes that has been CPU intestive recently.
Link to an image of OCCT report when the drops happen

http://imgur.com/ThIRB2y