First of all, thanks for this great little app! I just have a few ideas and a typo fix.
I'm sure that the GPU should be referred to as PCIE GPU and not PECI; After all its Peripheral Component Interconnect Express and not Peripheral Express Component Interconnect!
Secondly would it be possible to have profiles? I'd gladly pay a small fee for a 'pro' version that could support multiple profiles and/or change settings when it detects a system state change (for example, when the dedicated graphics card automatically kicks in).
A final idea of mine is simply to have a simple toggle button that goes between the automatic control and maximum speed - This would be incredibly useful!
Thanks again for a great app!

Cheers,
Rich