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Ryzen 9 7950x clock and fan and performance

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Joined
27 Jan 2019
Posts
170
Hi all, I would like to ask if it is possible to disable the CPU (don’t know the technical name) ability to bring up and down the clock and just leave it up to the max? I use the PC to do heavy editing (photo) and use a lot LR + PS and others softwares and have noticed when doing heavy stuff the CPU fan increases speed meaning that probably the cpu clock went up. Maybe might be the GPU. Either case, the reason is that I think I notice as delay when this happens (changes in the clock) and just thought that maybe having it always maxed out would improve overall performance and also remove the delays when doing heavy stuff. Tia
 
Fan speed increases after a delay and its intentional.
It reacts to increased temperature, which is not instant, and applies some hysteresis, else the fan speed changes would be too frequent and annoying

CPU itself manages its clockspeed in millisecond increments, there is no delay there, no lost performance

It is possible to lock CPU speed at a static value, but for current Zen4 processors that results in reduced performance in low threaded stuff like Adobe.
It is additionally possible to lock the fan speed to a higher value. There is a potential (tiny!) gain in CPU performance due to slightly higher boost clock thermal headroom.

Current best method to improve performance on Zen4 is using PBO and Curve Optimizer. Potential gain best case around 5%
There could be some headroom in tuning memory timings as well.
 
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Just tweak the fan profile in the bios to suit your requirements. The default curves will be quite aggressive on fan speed vs temp target causing the ramp up / ramp down experienced.
 
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