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774173-001 ✓ Verified by PartsTable
HP · MEMORY · LRDIMM
WHAT YOU NEED TO KNOW
Memory is a hot market right now. DDR5 and DDR4 are extremely volatile with data centers driving availability to extreme lows. Always validate machine type and model. Remember: all RAM is Hynix, Samsung, or Micron underneath OEM labels — use that to find alternatives. Key checks: Check OEM alternatives — all RAM is Hynix/Samsung/Micron underneath. Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW
HP 16GB (1x16GB) 2RX4 PC4-17000P-L DDR4-2133MHZ LRDIMM

HP 16GB (1x16GB) 2RX4 PC4-17000P-L DDR4-2133MHZ LRDIMM. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY→ LRDIMM→ 774173-001
SPECIFICATIONS
Part Number774173-001
ManufacturerHP
InterfaceDDR4
Capacity16GB
Speed2133MHz
COMPONENT DIAGRAM
ECC 16GB 2Rx4 PC4 2133MHz LRDIMM HP NOTCH ~133.35 mm DDR4 LRDIMM | 16GB | 2133MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 LRDIMM PN 774173-001 MFR HP 16GB 2133MHz
KEY FEATURES
•
DDR4 Interface
•
16GB Capacity
•
2133MHz Speed
•
DDR4 LRDIMM
TYPICAL APPLICATIONS
  • Server memory expansion for virtualization workloads
  • Database performance optimization (in-memory computing)
  • VDI and remote desktop session hosting
  • High-performance computing (HPC) clusters
  • Mail server and collaboration platform scaling
  • Application server tier expansion
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
726720-B21Compatible
HP 16Gb PC4-2133P-L Load Reduced DR x4 CAS-15 DIMM - Intel v3 - G9
compatible
752371-081Compatible
HP 16Gb PC4-2133P-L Load Reduced DR x4 CAS-15 DIMM - Intel v3 - G9
compatible
752371-281Compatible
HP 16Gb PC4-2133P-L Load Reduced DR x4 CAS-15 DIMM - Intel v3 - G9
compatible
787865-B21Compatible
HP 16Gb PC4-2133P-L Load Reduced DR x4 CAS-15 DIMM - Intel v3 for DL380z G9
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 4
726720-B21SUBSTITUTE
HP 16Gb PC4-2133P-L Load Reduced DR x4 CAS-15 DIMM - Intel v3 - G9
HPE
752371-081SUBSTITUTE
HP 16Gb PC4-2133P-L Load Reduced DR x4 CAS-15 DIMM - Intel v3 - G9
HPE
752371-281SUBSTITUTE
HP 16Gb PC4-2133P-L Load Reduced DR x4 CAS-15 DIMM - Intel v3 - G9
HPE
787865-B21SUBSTITUTE
HP 16Gb PC4-2133P-L Load Reduced DR x4 CAS-15 DIMM - Intel v3 - G9
HPE
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FREQUENTLY ASKED QUESTIONS
What is 774173-001?
774173-001 is a HP 16GB (1x16gb) 2Rx4 Pc4-17000p-L DDR4-2133MHZ LRDIMM manufactured by HP. It is classified as a MEMORY (LRDIMM).
What parts can replace 774173-001?
There are 4 known substitutes for 774173-001: 726720-B21, 752371-081, 752371-281 and 1 more. Substitute compatibility should be verified for your specific system.
Is 774173-001 still available?
774173-001 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026