Question PC TEMPS, cpu dropped 11 degrees with side panel off.

Dec 15, 2019
So while playing games my gpu hits 86c(gpu is usally at 83c) tops and my cpu hits 70c (usually sits around 60-65), i took the side panel off and the gpu dropped about 2 degrees but the cpu dropped like 11 degrees! what now? should i replace my case fans? get a new cooler? I have the wraith prism stock cooler that comes with the 3900x

My specs:
I have 3 intake fans in the front, 2 exhaust at the top, and 1 exhaust at the back, all 1100 RPM.

edited, didn't realize I had to save it D:
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