Quote Originally Posted by flyck View Post
Then you say the 2500 is 42.6% slower. But when the baseline is the 2500 you say the 2600 is 29% faster. In those slides the baseline is 2500 so in that relation the 2600 is 29% faster. If the baseline was the 2600 the 2500 would be 42.6% below that.
Because the WPrime score is given in seconds and where lower is better, you use the inverse of what you are suggesting. Or you can think of it this way, the 2500K does 32M digits in 10.37 seconds, or the equivalent of 3.086 million digits per second. The 2600K does 4.4 million digits per second or 42.6% more work (faster) than the 2500K.