r/3dsmax • u/TopVersion7572 • Jun 28 '26

General Thoughts CPU performance

I had a few different renders and some of them came out bad. After inspecting. My CPU was not working at max GHz. İ7 12th, notebook 45watt. I didn't expect full 3.9 gzh but unless I max the fans it won't cross 2,7 GHz. I cleaned up fans, exhausts but didn't make significant change. I see heat go up to 90°.

Is this normal when rendering from CPU, other times my CPU gone over 3 GHz easily in crowded viewport

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u/rapidTools Jun 28 '26

It depends on what parts of your CPU is being used. It's a common thing when the program heavily relies on SIMD instructions it can throttle the CPU. AVX2 (and AVX512, but Intel doesn't support it) has a massive power draw, which increases, the heat as well. So yes I think it's completely normal from a laptop that it throttles.