Merom, the first mobile version of the Core 2, was officially released on July 27, 2006, but quietly began shipping to PC manufacturers in mid-July, alongside Conroe.

[1][2] Merom became Intel's premier line of mobile processors, with mostly the same features as Conroe, but with a greater emphasis on low power consumption to enhance notebook battery life.

The first version of Merom is "drop-in" compatible with Napa platform for Core Duo, requiring at most a motherboard BIOS update.

A native 2 MB L2 version of the Merom core, called Merom-2M, was rolled out in early 2007 as a counterpart to Allendale.

The processor features a 44 W TDP and requires the new Intel Centrino (Santa Rosa) platform.

The mobile version of the Allendale desktop processor is often called Merom-2M to identify the smaller L2 cache.

[8] Microsoft has released a microcode update (KB2493989) for Windows 7 that addresses several stability issues on selected "Penryn" and "Merom" CPUs.