I'd only notice if I didn't fire up any games or any major CPU-intensive workload, which are few and far between most of the time. I run powerd on my 3.4GHz 4-

I'd only notice if I didn't fire up any games or any major CPU-intensive workload, which are few and far between most of the time. I run powerd on my 3.4GHz 4-core workstation, and the CPU spends 50% of its time between 800 and 1100 MHz, and it often goes all the way down to 100MHz if I shut down Firefox for the night.