Intel® is initiating a B-2 to L-2 stepping conversion for Intel® Core™2 Duo
processors E6300 & E6400 (Conroe) and Dual-Core Intel® Xeon® processors 3040 &
3050 (UP Xeon processors based on Conroe) where they will undergo the following
changes:

• New S-Spec and MM numbers for the converting products
• CPUID will change from 6F6 to 6F2
• Extended HALT power specification will reduce from 22 Watts to 12 Watts
• Die size optimized for manufacturability
• Minor visible difference between the B-2 and L-2 packages; see below for a
visual comparison
• L-2 package is pin compatible with B-2 package

Intel® is initiating a B-2 to L-2 stepping conversion for Intel® Core™2 Duo
processors E6300 & E6400 (Conroe) and Dual-Core Intel® Xeon® processors 3040 &
3050 (UP Xeon processors based on Conroe) where they will undergo the following
changes:

• New S-Spec and MM numbers for the converting products
• CPUID will change from 6F6 to 6F2
• Extended HALT power specification will reduce from 22 Watts to 12 Watts
• Die size optimized for manufacturability
• Minor visible difference between the B-2 and L-2 packages; see below for a
visual comparison
• L-2 package is pin compatible with B-2 package

Intel 1 B 2 To L 2 Stepping For 2MB Conroes

While the packages are visually different, the L-2 stepping package is pin
compatible with the B-2 stepping package and Intel anticipates no changes to
customer platforms designed to Intel guidelines. Additionally, the Extended HALT
power specification will reduce from 20-22 Watts to 12 Watts for Intel® Core™2
Duo processors E6600 & E6700 (Conroe) and Dual-Core Intel® Xeon® processors 3060
& 3070 (UP Xeon processors based on Conroe), and Intel is initiating new S-Spec
and MM numbers to better identify these processors having the new specification.

• The stepping will not change (remains B-2) for these processors
• CPUID will not change (remains 6F6) for these processors
• Die size and package will not change for these processors

Intel 2 B 2 To L 2 Stepping For 2MB Conroes