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R4000 Specifications

Detailed technical information and Application Scenarios

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R400010000Yes

R4000** is a high-performance microprocessor developed by **MIPS Technologies, Inc.

The R4000 is a high-performance microprocessor developed by MIPS Technologies, Inc.

Manufacturer Specifications:

  • Architecture: 64-bit RISC (MIPS IV ISA)
  • Clock Speed: Up to 100 MHz (varies by model)
  • Process Technology: 0.8 µm CMOS
  • Transistor Count: ~1.35 million
  • Cache:
  • L1 Instruction Cache: 16 KB
  • L1 Data Cache: 16 KB
  • Pipeline: 8-stage superpipelined
  • Floating-Point Unit (FPU): Integrated (64-bit)
  • Memory Management Unit (MMU): Integrated
  • Power Consumption: ~4W (typical)
  • Voltage: 5V

Descriptions:

The R4000 was one of the first commercially available 64-bit microprocessors, designed for high-performance computing, workstations, and servers. It introduced MIPS IV instruction set architecture (ISA) enhancements, including improved floating-point performance and superscalar execution capabilities.

Features:

  • 64-bit Data Paths: Enables large memory addressing and high-throughput computing.
  • Superscalar Execution: Capable of issuing multiple instructions per cycle.
  • Integrated FPU: Supports IEEE 754-compliant floating-point operations.
  • Large On-Chip Caches: Reduces memory latency for improved performance.
  • Multiprocessing Support: Can be used in multi-CPU configurations.
  • High Clock Speed (for its era): Competitive performance in scientific and engineering applications.

The R4000 was widely used in Silicon Graphics (SGI) workstations and servers, including the Indigo² and Onyx systems.

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