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462974-001 ✓ Verified by PartsTable
HP · 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

HP 256MB battery Backed Write P-Series Cache Memory Module. 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→ 462974-001
SPECIFICATIONS
Part Number462974-001
ManufacturerHP
Capacity256MB
COMPONENT DIAGRAM
ECC 256MB 2Rx4 PC4 — RDIMM HP NOTCH ~133.35 mm DDR4 RDIMM | 256MB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 462974-001 MFR HP 256MB —
KEY FEATURES
•
256MB Capacity
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
462968-B21Compatible
HP Smart Array BBWC 256Mb Upgrade for P212/P410i
compatible
013224-001Compatible
HP Smart Array BBWC 256Mb Module for P212 P410 P411 P712m
compatible
462986-B21Compatible
HP Smart Array BBWC 256Mb Module for P212 P410 P411 P712m
compatible
534108-B21Compatible
HP Smart Array BBWC 256Mb Upgrade for P212/P410i - FIO
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 4
013224-001SUBSTITUTE
HP Smart Array BBWC 256Mb Module for P212 P410 P411 P712m
HPE
462968-B21SUBSTITUTE
HP Smart Array BBWC 256Mb Module for P212 P410 P411 P712m
HPE
462986-B21SUBSTITUTE
HP Smart Array BBWC 256Mb Module for P212 P410 P411 P712m
HPE
534108-B21SUBSTITUTE
HP Smart Array BBWC 256Mb Module for P212 P410 P411 P712m
HPE
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FREQUENTLY ASKED QUESTIONS
What is 462974-001?
462974-001 is a HP 256MB battery Backed Write P-Series Cache Memory Module manufactured by HP. It is classified as a MEMORY (RDIMM).
What parts can replace 462974-001?
There are 4 known substitutes for 462974-001: 462968-B21, 013224-001, 462986-B21 and 1 more. Substitute compatibility should be verified for your specific system.
Is 462974-001 still available?
462974-001 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026