Disabling turbo boost/frequency boosting would actually _decrease_ power consumption, as well as performance. The idea with boosting is to allow certain cores to exceed the maximum frequency, so long as certain parameters such as package temp, core temp, and power usage are within certain thresholds. This allows workloads that don't push the entire CPU to its limits to run faster, as the few cores that are in use can run at higher frequencies and increased performance per core, at the cost of higher power usage per core and lower efficiency.