Intel® Pentium® Silver and Intel® Celeron® Processors

Datasheet, Volume 1 of 2

ID 633935
Date 12/27/2022
Document Table of Contents

Perform Carry-Less Multiplication Quad Word (PCLMULQDQ) Instruction

The processor supports the carry-less multiplication instruction, PCLMULQDQ. PCLMULQDQ is a Single Instruction Multiple Data (SIMD) instruction that computes the 128-bit carry-less multiplication of two 64-bit operands without generating and propagating carries. Carry-less multiplication is an essential processing component of several cryptographic systems and standards. Hence, accelerating carry-less multiplication can significantly contribute to achieving high speed secure computing and communication.

PCLMULQDQ specifications and functional descriptions are included in the Intel® 64 Architectures Software Developer’s Manual, Volume 2. Available at: