Conroe XE

The Core 2 Extreme was officially released on July 29, 2006. However some retailers appeared to have released it on July 13, 2006, though at a higher premium. The less powerful E6x00 models of Core 2 Duo were scheduled for simultaneous release with the X6800, which are both available at this time. It is powered by the Conroe XE core and replaces the dual-core Pentium Extreme Edition processors. Core 2 Extreme has a clock rate of 2.93 GHz and a 1066 MT/s FSB, although it was initially expected to be released with a 3.33 GHz and 1333 MT/s. The TDP for this family is 75–80 watts. With SpeedStep enabled, the average temperature of the CPU when idle is essentially that of the ambient atmosphere with its fan running at 1500 RPM.[16]

At launch time, Intel's price for the Core 2 Extreme X6800 was US$2999 each in quantities of 1000. Like the desktop Core 2 Duo, it has 4 MB of shared L2 cache available. This means that the only major difference between the regular Core 2 Duo and Core 2 Extreme is the clock rate and unlocked multiplier, usual advantages of the "Extreme Edition." The unlocked upward multiplier is of use to enthusiasts as it allows the user to set the clock rate higher than shipping frequency without modifying the FSB unlike mainstream Core 2 Duo models which are downward unlocked only.