- Jun 25, 2004
I picked up a Q6600 B3 shortly after it was released, and it capped out at 3ghz. Later I traded it for a G0 rev Q6600 at no cost, and that one capped out at 3.2ghz. 3.6 was a good OC which not all chips were capable of.I may be thinking of Penryn regularly hitting 4.0 GHz. Still, 3.6 GHz is 16% faster than the 3.1 GHz tested, and 3.8 GHz is 22% faster. The point still stands that this comparison did not take into account significant headroom that most Q6600s had.
It also fails to account for the memory bandwidth issue someone above mentioned.
EDIT: I'd really like to see someone take a Core 2 Quad QX6850, Core 2 Quad QX9770, Core i7 875K, Xeon X5672 (in dual channel), Core i7 2700K, Core i7 3770K, Core i7 4770K, Core i7 5775C (L4 disabled), Core i7 6700K, and Core i7 7700K, clock them all to 4 GHz with 1866 MHz DDR3 (or 2133/2400 if you can push the Core 2s to do so), and benchmark them against each other. This would be a fantastic means to compare the IPC gains from the last ten years.