Intel Pentium Pro 256 KB - KB80521EX 256K
Specifications
Only samples of this part were released.
| General information | |||||||||||||
| Type | CPU / Microprocessor | ||||||||||||
| Market segment | Server | ||||||||||||
| Family | Intel Pentium Pro | ||||||||||||
| CPU part number | KB80521EX 256K is an OEM/tray microprocessor | ||||||||||||
| Package | 387-pin Modified Staggered Ceramic Pin Grid Array with gold plated heat spreader 2.66" x 2.46" (6.76 cm x 6.25 cm) | ||||||||||||
| Socket | Socket 8 | ||||||||||||
| S-spec numbers | |||||||||||||
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| Architecture / Microarchitecture | |||||||||||||
| Microarchitecture | P6 | ||||||||||||
| Manufacturing process | 0.6 and 0.35 micron 5.5 million transistors | ||||||||||||
| Data width | 32 bit | ||||||||||||
| Data bus width | 64 bit | ||||||||||||
| Floating Point Unit | Integrated | ||||||||||||
| Level 1 cache size ? | 8 KB four-way set associative code 8 KB two-way set associative data | ||||||||||||
| Level 2 cache size ? | 256 KB | ||||||||||||
| Pipeline | 12-stage | ||||||||||||
| Multiprocessing | Up to 4 processors | ||||||||||||
| Low power features |
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CPUs, related to Intel Pentium Pro KB80521EX 256K
| Model | Freq. | L2 cache |
Multi- processing |
TDP | Features |
|---|---|---|---|---|---|
| Intel Pentium Pro family, Socket 8 | |||||
| Intel Pentium Pro 133 MHz (KB80521EX-133 256K) | 133 MHz | 256 KB | 4 | ||
| Intel Pentium Pro 150 MHz (KB80521EX150 256K) | 150 MHz | 256 KB | 4 | 29.2 Watt | |
| Intel Pentium Pro 166 MHz (KB80521EX166 512K) | 166 MHz | 512 KB | 4 | 35 Watt | |
| Intel Pentium Pro 180 MHz (KB80521EX180 256K) | 180 MHz | 256 KB | 4 | 31.7 Watt | |
| Intel Pentium Pro 200 MHz (KB80521EX200 256K) | 200 MHz | 256 KB | 4 | 35 Watt | |
| Intel Pentium Pro 200 MHz (KB80521EX200 512K) | 200 MHz | 512 KB | 4 | 37.9 Watt | |
| Intel Pentium Pro 200 MHz (GJ80521EX200 1M) | 200 MHz | 1 MB | 4 | 47 Watt | |
| Other families, P6 micro-architecture, Socket 8 | |||||
| Intel Pentium II Overdrive 333 MHz (PODP66X333) | 333 MHz | 512 KB | MMX | ||
• Highlighted numbers and features indicate whether specific processor performs better or worse than Pentium Pro KB80521EX 256K
• Never released microprocessors are marked with magenta color
• Within each category, the CPUs are sorted from slower (at the top) to faster (at the bottom)
• Features abbreviations:
MMX - MMX instructions
Pictures (1)
| Engineering sample | |
256 KB L2 cache 387-pin modified SPGA Gold plated heat spreader Image reduced 2x times Engineering sample |
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CPU ID
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