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PartsTable / MEMORY / 5552764-A
5552764-A ✓ Verified by PartsTable
HITACHI · MEMORY · RDIMM
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

Hitachi VSP G1000 16GB 2RX4 PC3L-12800R. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY→ RDIMM→ 5552764-A
SPECIFICATIONS
Part Number5552764-A
ManufacturerHITACHI
Capacity16GB
COMPONENT DIAGRAM
ECC 16GB 2Rx4 PC4 — RDIMM HITAC NOTCH ~133.35 mm DDR4 RDIMM | 16GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 5552764-A MFR HITACHI 16GB —
KEY FEATURES
•
16GB Capacity
•
Generation 1000 Platform
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 2
H6G21ACompatible
HP XP7 Cache Backup Memory 32Gb (2x16Gb DIMM's)
compatible
HITX5552764-ACompatible
HP XP7 Cache Backup Memory 16Gb DIMM
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
H6G21ASUBSTITUTE
HP XP7 Cache Backup Memory 16Gb DIMM
HPE
HITX5552764-ASUBSTITUTE
HP XP7 Cache Backup Memory 16Gb DIMM
HPE
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FREQUENTLY ASKED QUESTIONS
What is 5552764-A?
5552764-A is a Hitachi VSP G1000 16GB 2RX4 PC3L-12800R manufactured by HITACHI. It is classified as a MEMORY (RDIMM).
What parts can replace 5552764-A?
There are 2 known substitutes for 5552764-A: H6G21A, HITX5552764-A. Substitute compatibility should be verified for your specific system.
Is 5552764-A still available?
5552764-A is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026