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Logo from 1993 The latest standard badge design used by Intel to promote the Pentium brand. The Intel Pentium brand was a line of mainstream x86-architecture microprocessors from Intel. Processors branded Pentium Processor with MMX Technology (and referred to as Pentium MMX for brevity) are also listed here. It was replaced by the Intel ...
The Pentium III was the first x86 CPU to include a unique, retrievable, identification number, called Processor Serial Number (PSN). A Pentium III's PSN can be read by software [20] through the CPUID instruction if this feature has not been disabled through the BIOS.
28 million transistors; All models support: MMX, SSE The 'B' suffix denotes a 133 MHz FSB when the same speed was also available with a 100 MHz FSB. The 'E' suffix denotes a processor with support for Intel's Advanced Transfer Cache [1] in Intel documentation; in reality it indicates a Coppermine core when the same speed was available as either Katmai or Coppermine.
The processor serial number was introduced on Intel Pentium III, but due to privacy concerns, this feature is no longer implemented on later models (the PSN feature bit is always cleared). Transmeta's Efficeon and Crusoe processors also provide this feature.
The Pentium 4 was a seventh-generation CPU from Intel targeted at the consumer and enterprise markets. It is based on the NetBurst microarchitecture. Desktop processors
All models support: MMX L2 cache is off-die and runs at 50% CPU speed; The Pentium II OverDrive is a Deschutes Pentium II core packaged for Socket 8 operation. It comes with 512 KB of off-die full-speed L2 cache, which makes it very similar to the Pentium II Xeon.