Quote Originally Posted by Shadowmage View Post
No. Core Multiplexing just disables/enables the cores, leaving just one enabled. For example, core multiplexing will disable 3 cores on a Kentsfield, 1 core on a Conroe/Penryn, etc.

Also, I really don't think 14.x seconds for SuperPI 1M is possible at 2.66GHz stock speed for a Penryn family processor.
SuperPi loves cache, and disabling a core means the used core can use all 6MB, and that is the reason - maybe - of that score.