I tested these coolers at 8700k 1.25v 4.7GHz. Open stand and room temperature 25C. I ran prime95 without avx for 10 minutes and got the following results: c7g - 97C, axp90 - 92C.
Therefore, I recommend buying the axp90-47 full back (copper + nickel), it is cheaper and more powerful.
It has two...