Market page: DDR5 RDIMM 256GB 6400 MT/s Memory

HPE 256GB DDR5 RDIMM 6400 MT/s ECC

MemoryHPEP73447-B21
Compatible
Trust: Tier 3

OEM Reference Overview

P73447-B21 is an OEM reference part for DDR5 RDIMM 256GB 6400 MT/s Memory. This part is typically not sold directly on the open market.

Vendors and procurement teams use this part number to specify required specifications, which are fulfilled by compatible third-party or original manufacturer modules.

This reference maps to the market category DDR5 RDIMM 256GB 6400 MT/s Memory

Use the compatible parts below to evaluate availability, risk, and pricing.

Technical Specifications

Brand
HPE
Manufacturer
HPE
Part Number
P73447-B21
Certification
Compatible
OEM Lock
No
DDR Generation
DDR5
Form Factor
RDIMM
Capacity (GB)
256
Speed Min (MT/s)
6400
Speed Max (MT/s)
6400
ECC
ECC
AI
AI Research Assistant
Ask about market signals and prices
Preview
What's the spread on DDR4 32GB RDIMM right now?
For DDR4 32GB RDIMM, OEM parts are clearing 18–22% above compatible alternatives. 6 active sellers, moderate liquidity. Compatible pricing has been stable for 30 days.
Should I wait or buy now?
Signals point to a stable-to-softening trend for compatible. If your timeline allows 2–4 weeks, holding may improve your position. OEM premiums are holding firm — only worth it if your platform requires validated memory.
Live assistant available to Pro subscribers at launch