Not sure if this is worthy of its own topic (cause I'm not close enough to being ready to buy something) but ...

If you have a locked CPU (like an i9-9900T or i9-9900F), can you still set the all-core multiplier up to the single-core boost spec (just not higher)?

Also, for anyone that has an i9-9900K, what speed does it run at under load on all cores, and what score does it get in Cinebench R15 & R20, if you set the power limit to various 15-watt increments from 120 watts down to about 30 watts?  And for those tests, no allowing it to run higher for a short time, it would need to be hard-capped.

(If I was going to get one, it'd be going into a thermally-constrained environment, where 105-110 watts or so is pretty close to the limit.  I've heard those CPUs can go well over TDP at "stock" settings.)