I have a Lenovo G50-45 with came with an A8-6410 APU.
Before updating to the latest drivers (crimson 17.4 something) I was able to reduce the clock speed from 2.00Ghz to 1.00Ghz.
When I update the drivers I can not reduce the speed, so the laptop is running constantly at 2.00Ghz and the fan noise is unbearable.
Any ideas ?
Roll back to the previous driver set.