Friday, November 1, 2013

Pentium 4 6x1 C-1 to D-0 Stepping Change

The boxed Intel® Pentium® 4 processors 631, 641 and 651 will undergo thefollowing changes for the C-1 to D-0 processor stepping conversion:

• CPUID will change from F64 to F65.
• New S-specs for converting products.
• Converting products will change from the 2005 Mainstream FMB (95W) to the 2006FMB (65W)
• TDP will change from 86W to 65W, Max Icc will change from 100A to 65A, MaxIcc_StopGrant will change from 50A to 40A, Max Icc_Enhanced_auto_halt willchange from 40A to 25A, and thermal profile will change from 05A to 06 thermalprofile.
• The Electrical, Mechanical and Thermal Specifications remain within thecurrent specifications. Intel anticipates no changes to current customerplatforms designed to Intel guidelines
• Converting products will ship in the Alternate Equivalent package only. Whilethe packages are visually different, Intel anticipates no changes to customerplatforms designed to Intel guidelines (Please see below)

The Platform Compatibility Guide indicating the processor FMBwill be changing from 05 to 06 to the processor mark as illustrated with thefollowing example:



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