Clock speed is normally regulated by the multiplier depending on CPU usage. It's called SpeedStep and it means that Intel CPUs are automatically underclocked when idle. IT will run up to full speed at load (and now, possibly higher due to TurboBoost).
oH....I see. It is running at the set system multiplier of 42 once I opened Prime 95 and system load is 100% temps spiked to 65c. Should I disable speedstep and allow the system to run at 42 all the time? Is there a realized benefit from speedstep being enabled on bases of energy consumption and perhaps preservation of sytem.