The 9000x3D has several limiters that we know exist,
https://skatterbencher.com/2024/10/01/ryzen-9-9950x-htfmax/
In this example there is a hidden high temp limiter that is not the same thing as curve shaper or curve optimizer.
The limiter essentially kicks in at 35C and restricts the maximum frequency the chip can run at.
It’s not clear what chips have it, but it is real and can be fixed with other methods like ECLK which is good.
But are there any important settings like this on 9950x3D or 9800x3D that exist and should be disabled for max performance? Have you noticed any specific settings in PBO that actually should not be enabled or set a certain way?
Some people recommend not putting manual TDC/EDC/PPT limits and instead just set “motherboard”.
I know for example my CPU has the hftmax limiter because no matter how insane my CO value gets, no matter how high I set my other values. It is stuck at 5250 all core in heavier workloads.
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You see the same kind of boost binning in Nvidia’s chips. It’s kind of become standard practice to maximize chip longevity. It also is designed so that you don’t “cheat” and get free performance across the board at the cost of increased risk of hardware failure. The risk of failure and warranty claims is too high from the manufacturers perspective.