Pentium Pro
The Pentium Pro is a sixth-generation x86 microprocessor developed and manufactured by Intel and introduced on November 1, 1995.: 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. While the Pentium and Pentium MMX had 3.1 and 4.5 million transistors, respectively, the Pentium Pro contained 5.5 million transistors.: 12 Later, it was reduced to a more narrow role as a server and high-end desktop processor and was used in supercomputers like ASCI Red, the first computer to reach the trillion floating point operations per second (teraFLOPS) performance mark in 1996. The Pentium Pro was capable of both dual- and quad-processor configurations. It only came in one form factor, the relatively large rectangular Socket 8. The Pentium Pro was succeeded by the Pentium II Xeon in 1998.
| General information | |
|---|---|
| Launched | November 1, 1995 |
| Discontinued | June 1998 |
| Marketed by | Intel |
| Designed by | Intel |
| Common manufacturer(s) |
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| CPUID code | 0F619h |
| Product code | 80521 |
| Performance | |
| Max. CPU clock rate | 150 MHz to 200 MHz |
| FSB speeds | 60 MT/s to 66 MT/s |
| Data width | 64 bits |
| Address width | 36 bits |
| Virtual address width | 32 bits |
| Cache | |
| L1 cache | 16 KB (8 KB instructions + 8 KB data) |
| L2 cache | 256 KB - 1 MB |
| Architecture and classification | |
| Application | Server Workstation |
| Technology node | 500 nm to 350 nm |
| Microarchitecture | P6 |
| Instruction set | x86 |
| Physical specifications | |
| Transistors |
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| Cores |
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| Socket(s) | |
| History | |
| Predecessor(s) | Pentium |
| Successor(s) | Pentium II, Pentium II Xeon |
| Support status | |
| Unsupported | |