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The Pentium Pro is a sixth-generation x86 microprocessor developed and manufactured by Intel and introduced on November 1, 1995. [1]: D-2 It introduced the P6 microarchitecture (sometimes termed i686) and was originally intended to replace the original Pentium in a full range of applications.
The successor to the Pentium M variant of the P6 microarchitecture is the Core microarchitecture which in turn is also derived from P6. P6 was used within Intel's mainstream offerings from the Pentium Pro to Pentium III, and was widely known for low power consumption, excellent integer performance, and relatively high instructions per cycle (IPC).
CPU instruction rates are different from clock frequencies, ... Intel Pentium Pro: 541 MIPS at 200 MHz: 2.7: 2.7: 1996 [53] Hitachi SH-4: 360 MIPS at 200 MHz: 1.8: 1. ...
Intel Pentium Pro: 52x P6: 1995–1998 150 MHz – 200 MHz Socket 8: 350 nm, 500 nm 29.2 W – 47 W 1 60 MHz, 66 MHz 16 KiB 256 KiB, 512 KiB, 1024 KiB N/A Pentium II: 52x Klamath Deschutes Tonga Dixon: 1997–1999 233 MHz – 450 MHz Slot 1 MMC-1 MMC-2 Mini-Cartridge: 250 nm, 350 nm 16.8 W – 38.2 W 1 66 MHz, 100 MHz 32KiB 256 KiB – 512 KiB N/A
The Pentium Pro is the first of Intel's sixth-generation CPUs targeted at the enterprise and server markets.. The processor was relatively unusual in that the Pentium Pro used a unique "on-package cache" arrangement; the processor and the cache were on separate dies in the same package and were connected closely by a full-speed bus.
Constant TSC behavior ensures that the duration of each clock tick is uniform and makes it possible to use the TSC as a wall-clock timer even if the processor core changes frequency. This is the architectural behavior for all later Intel processors. AMD processors up to the K8 core always incremented the time-stamp counter every clock cycle. [6]
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 ...
Processors began to have a front-side bus (FSB) clock speed used in communication with RAM and other components. Typically, the processor itself ran at a clock speed that was a multiple of the FSB clock speed. Intel's Pentium III, for example, had an internal clock speed of 450–600 MHz and an FSB speed of 100–133 MHz.