Conroe is the code name for many Intel processors sold as Core 2 Duo, Xeon, Pentium Dual-Core and Celeron.

Intel claimed that Conroe provided 40% more performance at 40% less power compared to the Pentium D; the E6300, lowest end of the initial Conroe lineup, is able to match or even exceed the former flagship Pentium Extreme Edition 965 in performance, despite a 50% clock frequency deficit.

When yields improve, they may be replaced with versions that only have the cache amount needed on the die, to bring down manufacturing cost.

Conroe CPUs have improved capabilities over previous models with similar processor clock rates.

Conroe chips also produce less heat than their predecessors – a benefit of the new 65 nm technology and the more efficient microarchitecture.

[3] An additional model, the E6540, was launched with specifications similar to the E6550 but lacking Intel Trusted Execution Technology and vPro support.

It uses the Conroe XE core and replaced the dual-core Pentium Extreme Edition processors.

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.

The fully unlocked multiplier is of use to enthusiasts as it allows the user to set the clock rate higher than shipping frequency without modifying the FSB frequency, unlike mainstream Core 2 Duo models whose multipliers are downward unlocked only.

They feature a lower front side bus frequency of 800 MT/s instead of 1066 MT/s and only half the L2 cache (2 MB, similar to the Core 2 Duo E6300 and E6400), offering a smaller die size and therefore greater yields.

Most media have subsequently applied the name Allendale to all LGA 775 processors with steppings L2 and M0, while Intel refers to all of these as Conroe.

A new E2000 series of Allendale processors with half their L2 cache disabled was released in mid-June 2007 under the Pentium Dual-Core brand name.

You'll find plenty of sources that will tell you the code name for these 2 MB Core 2 Duo processors is "Allendale," but Intel says otherwise.

These CPUs are still code-named "Conroe," which makes sense since they're the same physical chips with half of their L2 cache disabled.