A mainstream quad-core is one of the best ideas that Intel had and 65nm Core 2 Quad Q6600 is still the most popular quad-cores around.

The prices have gone down, and even with 45nm quad-cores as competition Intel is selling Q6600 like hot cakes. This CPU is 2.4GHz Kentsfiend core and with an average price of €140 it is still the primary choice of many.

The 45nm based quad-core codenamed Yorkfield in its Q9300 iteration sells for slightly over €200, but is not even close to being as popular as Q6600.

OEMs and System Integrators really like Q6600, as four cores sounds better in adds than two cores and the majority of the market simply goes for it.

Q6600 will remain the most popular quad-core in 2008, but Yorkfield will most likely continue sharing some of this dominance.