> Anyone have a good solution?
A good cooler
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Downvotes, really? There is really no trick around thermals being the main performance limiting factor for the last 10 years, since CPUs started coming with hardware "turbo"
You cannot optimise around that.
And with modern CPUs the power density is sufficently high that the die and heatspreader thermal resistance is enough to cause substantial temperature changes even with completely overspecced cooling.
No, you can up/down the base/turbo limits, but the effect will be miniscule.
As said above, the performance, and power consumption of modern CPUs is an "all, or nothing" choice.
Modern laptop CPUs are nothing, but well disguised desktop/server cores. Nobody designs designated mobile use cores, unless you are in ARM world.
In principle, they are unable to work in the "middle gear." CPU makers tried to make them to, but never managed to get a reasonable trade off. So you cannot run them reasonably at "half-performance"