- Mar 14, 2016
See 2.8GHz all cores for that CPU seems more like what I'd expect. If one can run all cores at boost clock speed what exactly is the point of having a base clock?Also don't forget if you set cTPD, set package power limit too.
For some reason changing these on 7282 didn't do anything. Works great on 7452 though, changing from default 155w to 180w pulls almost exactly 50w more from the wall on 100% load.
I set to max on my 7452 with determinism on performance. All cores are running 2823 MHz on full load. Running different number of threads predictably lets those cores boost higher.
But it's definitely a power limit, and not temp related because both CPUs are running ice cold on SM 4U heatsinks.
*Edit: One question I have is, does changing other settings that contribute to total package power, change boost behavior by allowing more cores to run at higher frequency? AMD's tuning guide has a handful of references like this: "Lowering the memory clock speed also results in power savings in the memory controller, thus allowing the rest of the SoC to consume more power potentially resulting in a performance boost elsewhere."