Explanation: Effectiveness

This is a measure of how well does your system fare in clock-per-clock performance and is indicative of how much useful processing instructions your CPU executes per clock. The formula to calculate this is ([Score] x K) / ([CPU clock in MHz] x [Num threads]). The constant K is 1000, needed to keep the values in the 10-100 range. A CPU with high effectiveness does a lot of work for its clock speed, which usually means it is doing good for a relatively low clock speed. In turn, this suggests it is also electrically effective. However, this is misleading for HT systems, which (because of the doubled number of threads, and not-doubled performance) get a lot lower effectiveness scores, while their electrical effectivity is not worse, and even usually better.