etwas mehr gegoogle bringt noch mehr licht ins dunkle 
Fast timers waste performanceExecuting interrupts also uses some execution resources so having more interrupts per second should make your computer run a little bit slower. I tested this theory by writing a program that spins in a busy loop and reports every second on how quickly it’s getting work done. While this program was running I would change the timer resolution and see whether its throughput was affected.
It was affected. A lot.
quelle: http://randomascii.wordpress.com/2013/07/08/win…gawatts-wasted/