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Technical Data Sheet
PartsTable / PROCESSOR / PA2557
PA2557 ✓ Verified by PartsTable
— · PROCESSOR · INTEL_XEON
WHAT YOU NEED TO KNOW
Intel Xeon processors — standard item. Cross-sell heatsink and fan.
PRODUCT OVERVIEW

Intel Xeon Platinum 8170 26C 2.1GHz 35.75MB. Key specifications include body_width: 1.812 INCHES NOMINAL IN, body_height: 2.438 INCHES NOMINAL IN, body_length: 1.938 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, mounting_method: THREADED HOLE(S) SINGLE GROUP, frequency_rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-810-9457, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
PROCESSOR→ INTEL_XEON→ PA2557
NSN: 5950-00-810-9457
FSC: 5950
CAGE: 80223 — UNITED TRANSFORMER CORP SUB OF OPT INDUSTRIES INC (USA)
SPECIFICATIONS
body_width1.812 INCHES NOMINAL IN
body_height2.438 INCHES NOMINAL IN
body_length1.938 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
thread_quantity_per_inch32 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_shielding_methodINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
winding_operating_current1.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
NSN5950-00-810-9457
COMPONENT DIAGRAM
PIN 1 SERVER CPU PROCESSOR LGA/SP SOCKET 76.0 mm 56.5 mm LGA/SP SOCKET — Server CPU Pin 1 alignment triangle IHS — Nickel-plated copper Thermal interface to heatsink TDP — 35W to 400W Bronze / Silver / Gold / Platinum CONTACT — LGA pads Socket-side pins (not on CPU) TITLE SERVER CPU PN PA2557 MFR Intel Xeon Platinum 8170 26C 2.1GHz 35.7
KEY FEATURES
•
35.75MB Capacity
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
•
MOUNTING FACILITY QUANTITY: 8 SINGLE GROUP
•
BODY WIDTH: 1.812 INCHES NOMINAL IN
•
WINDING SHIELDING METHOD: INTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
•
WINDING FUNCTION AND QUANTITY: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
•
WINDING OPERATING VOLTAGE: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
•
TERMINAL TYPE AND QUANTITY: 6 STANDOFF, SOLDER LUG
TYPICAL APPLICATIONS
  • Enterprise virtualization host density upgrades
  • Database server performance scaling
  • AI/ML inference workloads
  • High-performance computing (HPC) clusters
TECHNICAL CHARACTERISTICS (FLIS)
RELIABILITY INDICATORNOT ESTABLISHED
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
MOUNTING FACILITY QUANTITY8 SINGLE GROUP
BODY WIDTH1.812 INCHES NOMINAL IN
WINDING SHIELDING METHODINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
WINDING FUNCTION AND QUANTITY1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
WINDING OPERATING VOLTAGE6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
TERMINAL TYPE AND QUANTITY6 STANDOFF, SOLDER LUG
FREQUENCY RATING400.0 HERTZ NOMINAL SINGLE COMPONENT
MOUNTING METHODTHREADED HOLE(S) SINGLE GROUP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
8710Interchangeable
Intel Xeon Platinum 8170 26C 2.1GHz 35.75MB
interchangeable
739163-02Interchangeable
interchangeable cross-reference
interchangeable
S8710Interchangeable
interchangeable cross-reference
interchangeable
M52471/2B2130260Interchangeable
interchangeable cross-reference
interchangeable
1-300-487-02Interchangeable
interchangeable cross-reference
interchangeable
1-300-487-04Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PA2557?
PA2557 is a Intel Xeon Platinum 8170 26C 2.1GHz 35.75MB. It is classified as a PROCESSOR (INTEL_XEON).
What parts can replace PA2557?
There are 22 known substitutes for PA2557: 8710, 739163-02, S8710 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PA2557?
PA2557 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-810-9457. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026