PA-RISC Processors
PA-8600 (PCX-W+)
Overview
The PA-8600 is basically a modified PA-8500 in a new manufacturing process to achieve higher clock speeds. Released in January 2000, the PA-8600 was a PA-RISC 2.0 64-bit processor, and used as upgrade in many HP 9000 servers and workstations.
Details
- PA-RISC version 2.0, 64-bit architecture, multi-processor capable, 4-way superscalar
- Ten functional units: 2 integer ALUs, 2 shift/merge units, 2 complete load/store pipelines, 2 Floating Point multiply/accumulate units, 2 Floating Point divide/square root units
- IRB: 56-entry instruction queue/reorder buffer
- TLB: 160-entry fully-associative dual-ported
- BTAC: 32-entry Branch Target Address Cache; BHT: 2048-entry Branch History Table
- Cache L1 0.5 MB I and 1 MB D on-chip, each 4-way set associative
- Memory: up to 1 TB memory supported with 40-bit physical addresses
- Memory and I/O controllers are external
- Bi-endian support
- MAX-2 multimedia extensions subword arithmetic for multimedia applications
- Runway+ system bus, 125 MHz, 64-bit, DDR, about 2 GB/s peak bandwidth
- Up to 550 MHz, clock speed with 2.0 V core voltage
- 21.3×22.0 mm2 die, 140,000,000 FETs, 0.25µ (micron), 5-layer metal CMOS packaged in a 544-pin LGA package
Used in
- HP 9000 A400-5X (rp2400), A500-5X (rp2450) servers
- HP 9000 B2000 (some), B2600 workstations
- HP 9000 C3600 workstations
- HP 9000 J5600, J6000, J7600 workstations
- HP 9000 L1000-5X (rp5400), L2000-5X (rp5450), L1500-5X (rp5430), L3000-5X (rp5470)
- HP 9000 N4000-5X (rp7400) servers
- HP 9000 V2600 mainframes
- HP 9000 Superdome mainframes
- NEC NX7000/L1000, NX7000/L2000, NX7000/L3000 servers
- Stratus Continuum 439, 449, 651-2, 652-2, 1251-2, 1252-2 mainframes