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SL2U3 (Intel Pentium II 350 MHz)

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Same socket
Same stepping

SL2U3 specifications

General information
TypeCPU / Microprocessor
FamilyIntel Pentium II
Part number80523PY350512PE
Frequency (MHz)  ? 350
Bus speed (MHz)  ? 100
Package typeSECC 3.00
Socket typeSlot 1
Architecture / Microarchitecture / Other
Core steppingdB0
Qualification sampleQ559
Previous steppingSL2S6
Processor coreDeschutes
Manufacturing technology (micron)0.25
L2 cache size (KB)  ? 512
Core voltage (V)  ? 2.0 (1.93 - 2.1)
Case temperature (°C)  ? 5 - 75
TagRAM steppingA0
Processor substrate revisionB1
Notes on sSpec SL2U3
  • Cacheable address space supports up to 4 Gbytes.
  • L2 cache supports ECC.

Related S-Spec numbers

In addition to the SL2U3 S-Spec, this processor was also manufactured with a few production and pre-production S-Spec numbers:

SteppingS-Spec 80523PY350512PE B80523P350512E BX80523U350512E
dA1 SL2SF   +  
SL2ZQ +    
dB0 Q559 +    
Q560 +    
SL2U3 +    
SL2U4 +    
SL2WZ   +  
SL356     +
SL37F     +
SL3FN     +
dB1 SL38M + +  
SL3J2     +
Unknown SL2TW +    

NOTE: Engineering and qualifications samples are marked with this color

SL2U3 CPUID information

Intel Pentium II Pentium II 350MHz SL2U3
Part number:80523PY350512PE
Frequency:348 MHz
Comment:... in my IntelliStation E Pro
Submitted by:Leon Esser
General information
Processor type:Original OEM Processor
CPUID signature:652
Family: 6 (06h)
Model: 5 (05h)
Stepping: 2 (02h)
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
4-way set
4-way set
Line size: 32 bytes 32 bytes 32 bytes
Instruction set extensionsAdditional instructions
Major featuresOther features
On-chip Floating Point Unit 36-bit page-size extensions
  Debugging extensions
  Machine check architecture
  Machine check exception
  Memory-type range registers
  Model-specific registers
  Page attribute table
  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.



2007-05-12 05:08:56
Posted by:


2008-03-12 20:45:27
Posted by: Thomsonicus

wicked radiator!

Another picture of a slightly different SL2U3

2010-02-12 17:40:48
Posted by: Kurt

Different heatsink

Another picture of a slightly different SL2U3

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