coming back to this,
THIS is the worst thing you can do, why ? i tired it and it keeps the GPU running at base clock even when you dont do anything with it
i was wondering why my fans started to spin in 20sek, interval, up - down, wait, up - down, wait etc.
this was the cause, the GPU was runing with baseclock and not idle clock at the desktop (140/400MHz for my GTX 1070 in idle) so i had ~1600/4000MHz clock all the time
if you want more performance out of your GPU then rise the Power Limit and with it the Temperatur Limit in MSI afterburner, but not with the Power Management of Nvidia Control Panel