In idle the voltage should have been the same for both versions in theory, so that you see an difference is odd. But I did rewrite the whole calculation so it could have been a slight bug in the previous version. It does also a slight undervolting of the higher p-states, so it should run cooler during load, and could be the reason why you see a drop in temperature. I will probably add this as an modifiable option if it causes problems, and to let other users adjust it themselves.