Intel Core 2 Duo E6700 reviews

In June 2003 Intel released the 3.2GHz Northwood Pentium 4 and after that it entered a black period with the Prescott core which failed miserably to produce decent clock speeds despite a move to a 90nm fabrication process.

To add to Intel's woes, Prescott consumed huge amounts of power and therefore shed enormous amounts of heat. In short, Prescott wasn't a good processor so Intel took the bold step of scrapping the NetBurst architecture, including Prescott's 65nm Tejas successor, and instead returned to the drawing board.

This gave AMD two years of grace, in which time its Athlon 64 and Opteron processors have ruled the roost. But now Intel is back and it means business. The new desktop processor that launches this month is Core 2 Duo. This is the second version of Intel's notebook Core processor, while the 'Duo' means it is dual core, so in time we shall doubtless see Core 3 Trio and then Core 4 Quadro, or perhaps that should be Core 4 Quattro.

Core 2 Duo takes Intel's desktop processors in a new direction by putting the emphasis on efficiency rather than clock speed, so the new processors run on a Quad-pumped 266MHz Front Side Bus which is the equivalent of 1,066MHz.

However, the actual clock speeds are relatively low. The E6300 runs at 1.86GHz and costs £153, the E6400 is 2.13GHz and costs £182, the E6600 gives you 2.40GHz for £253 and the top-of-the-line E6700 has a clock speed of 2.67GHz and is on sale at £411.