I was surprised by how 'flat' the performance increases are as well. If you interpret Moore's Law as expecting a doubling of performance ever 18 months (yes I know this wasn't what Moore's Law originally said, but for long time the transistor count on a die and performance ran hand in hand), 8 years gives time for 5.333 doublings. 2^5.333 is about 40.3. That is a big difference from the 'up to 11 times faster' results these benchmarks produced. If you're more lenient and allow for 2 years between expected performance doublings, the current processors should still be 16 times faster than those from 8 years earlier.