Intel Pentium II 266 - 80522PX266512 (B80522P266512)
Specifications
| General information | |||||||||||||||||||||||||
| Type | CPU / Microprocessor | ||||||||||||||||||||||||
| Market segment | Desktop | ||||||||||||||||||||||||
| Family | Intel Pentium II | ||||||||||||||||||||||||
| CPU part numbers | 80522PX266512 is an OEM/tray microprocessor B80522P266512 is a boxed microprocessor | ||||||||||||||||||||||||
| Frequency ? | 266 MHz | ||||||||||||||||||||||||
| Bus speed ? | 66 MHz | ||||||||||||||||||||||||
| Clock multiplier ? | 4 | ||||||||||||||||||||||||
| Package | Single Edge Contact Cartridge 5.505" x 2.473" x 0.647" (13.98 cm x 6.28 cm x 1.64 cm) | ||||||||||||||||||||||||
| Socket | Slot 1 | ||||||||||||||||||||||||
| Introduction date | 7-May-97 | ||||||||||||||||||||||||
| Price at introduction | $775 | ||||||||||||||||||||||||
| S-spec numbers | |||||||||||||||||||||||||
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| Architecture / Microarchitecture | |||||||||||||||||||||||||
| Microarchitecture | P6 | ||||||||||||||||||||||||
| Processor core ? | Klamath | ||||||||||||||||||||||||
| Core steppings ? | C0 (SL265, SL28L) C1 (Q202, SL2HC, SL2QB) | ||||||||||||||||||||||||
| CPUIDs | 633 (SL265, SL28L) 634 (Q202, SL2HC, SL2QB) | ||||||||||||||||||||||||
| Manufacturing process | 0.35 micron, 7.5 million transistors | ||||||||||||||||||||||||
| Data width | 32 bit | ||||||||||||||||||||||||
| Data bus width | 64 bit | ||||||||||||||||||||||||
| Floating Point Unit | Integrated | ||||||||||||||||||||||||
| Level 1 cache size ? | 16 KB code 16 KB data | ||||||||||||||||||||||||
| Level 2 cache size ? | 512 KB unified cache running at 1/2 of processor frequency | ||||||||||||||||||||||||
| Physical memory | 64 GB | ||||||||||||||||||||||||
| Multiprocessing | Up to 2 processors | ||||||||||||||||||||||||
| Low power features |
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| Electrical/Thermal parameters | |||||||||||||||||||||||||
| V core ? | 2.8V | ||||||||||||||||||||||||
| V L2 cache | 3.3V ± 5%V | ||||||||||||||||||||||||
| Maximum operating temperature ? | 75°C | ||||||||||||||||||||||||
| Maximum power dissipation ? | 44.23 Watt | ||||||||||||||||||||||||
| Thermal Design Power ? | 38.2 Watt | ||||||||||||||||||||||||
• Highlighted numbers and features indicate whether specific processor performs better or worse than Pentium II 266 MHz (80522PX266512)
• Within each category, the CPUs are sorted from slower (at the top) to faster (at the bottom)
• List of related CPUs is not complete.
• Features abbreviations:
SSE - SSE instructions
Pictures (4)
| Top view | |
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| Front view | |
266 MHz 512 KB L2 cache Single Edge Contact cartridge (slot 1) Front view Image reduced 2x times |
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| Inside | |
Includes: SL28V =??? M5M5V1132AGP-5H 133MHZ 4 pieces = Cache Static RAM - Selectable Burst Mode |
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| SL2QB | |
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Benchmarks
| Tested processor | ||||||||||||||||||||||||||||||||||||||||
| CPU ID: | 0634h | |||||||||||||||||||||||||||||||||||||||
| CPU vendor string: | GenuineIntel | |||||||||||||||||||||||||||||||||||||||
Integer performance
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Floating Point performance
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MMX / SSE / SSE2 performance
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CPU ID (2)
NOTE: CPU ID information below was taken from one CPU and may include features that are not present in all different steppings of the Intel Pentium II 266 CPU.
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| General information | |
|---|---|
| Vendor: | GenuineIntel |
| Processor type: | Original OEM Processor |
| CPUID signature: | 633 |
| Family: | 6 (06h) |
| Model: | 3 (03h) |
| Stepping: | 3 (03h) |
| TLB/Cache details: | Data TLB: 4-KB Pages, 4-way set associative, 64 entries Data TLB: 4-MB Pages, 4-way set associative, 8 entries Instruction TLB: 4-KB Pages, 4-way set associative, 32 entries Instruction TLB: 4-MB Pages, fully associative, 2 entries |
| Cache: | L1 data | L1 instruction | L2 |
|---|---|---|---|
| Size: | 16 KB | 16 KB | 512 KB |
| Associativity: | 4-way set associative |
4-way set associative |
4-way set associative |
| Line size: | 32 bytes | 32 bytes | 32 bytes |
| Instruction set extensions | Additional instructions | ||
|---|---|---|---|
| MMX | CMOV | ||
| CMPXCHG8B | |||
| SYSENTER/SYSEXIT | |||
| Major features | Other features | ||
| On-chip Floating Point Unit | Debugging extensions | ||
| Machine check architecture | |||
| Machine check exception | |||
| Memory-type range registers | |||
| Model-specific registers | |||
| Page global extension | |||
| Page-size extensions (4MB pages) | |||
| Physical address extensions | |||
| Time stamp counter | |||
| Virtual 8086-mode enhancements | |||
Our CPUID database has 2 records for this microprocessor. See all submitted records.
Comments (2)
overclockability 400mhz
The PII 266 cpu will run stable no problem running @100fsb if your motherboard has the option to switch from 66fsb to 100fsb using 100mhz sdram,the multiplier is locked @ 4x,this cpu runs unstable over 412mhz,this is a well known overclock ,this is the same chip as a 66fsb 400mhz version,luckily the 512kb cache can handle operating @100fsb,the cache has a speed limitation of running up to 200mhz 1/2 cpu speed(making this possible).This gives the cpu a real performance boost,operating at near PIII performance due to the 100fsb overclock.(adding a cpu fan to the heatsink is recommended)
83 MHz FSB with PC66 RAM also possible
In addition to 100 MHz FSB setting with PC100 RAM mentioned in previous comment, this CPU also works flawlessly @ 4x 83 MHz setting with PC66 RAM, resulting in 333 MHz speed. Tested with Asus P2L97 motherboard with 440LX chipset (100 MHz FSB setting is not available).
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