HPE 64GB (1x64GB) Dual Rank x4 DDR5-6400 CAS-46-45-45 EC8 Registered Smart Memory Kit
Listed servers for this part are being looked up.
- Secure checkout
- Card, P-card, purchase order, ACH, wire transfer, PayPal
- Tested or factory sealed
- Free Ground shipping on US orders over $100
need a formal quote?
Request a quote by email in PDF format, valid for 24 hours
Part number cross-reference
- Part number
- P69721-0A1
Overview
This item, P69721-0A1, is the HPE assembly number for the product described as 64GB (1x64GB) Dual Rank x4 DDR5-6400 CAS-46-45-45 EC8 Registered Smart Memory Kit. Further details below.
Expand your HPE Gen12 server with the P69721-0A1, a genuine HPE SmartMemory 64GB (1x64GB) DDR5-6400 registered DIMM. Running at 6400 MT/s (PC5-51200) on a 288-pin Dual Rank x4 (2Rx4) RDIMM at just 1.1V, it delivers the bandwidth headroom demanding virtualization, database, and analytics workloads need, while EC8 registered ECC guards against single-bit errors for dependable, around-the-clock uptime.
As HPE SmartMemory, P69721-0A1 is authenticated by the server to report full performance and reliability data, so you avoid the compatibility guesswork of third-party modules. It is supported in a wide range of Gen12 platforms including the DL320, DL340, DL340e, DL360, DL380, DL380a, DL580, DL110, ML350, EL140, Synergy 480 Gen12, and the Alletra Storage Server 4210 - making it an easy, scalable upgrade path across your fleet.
HPE Option Part #: P69728-B21
HPE Spare Part #: P71256-001
HPE Assembly Part #: P69721-0A1
PRODUCT SPECIFICATIONS FOR P69721-0A1:
- Capacity: 64 GB (1 x 64 GB module)
- Memory Type: DDR5 SDRAM
- Speed: 6400 MT/s (PC5-51200)
- Form Factor: 288-pin DIMM (RDIMM - Registered DIMM)
- Rank & Organization: Dual Rank (2Rx4), x4 chip organization
- Error Correction: ECC (EC8 Registered)
- Voltage: 1.1V
- CAS Latency: CL52 (or CL46 depending on specific sub-vendor/profile specs)
- Brand: HPE SmartMemory
COMPATIBLE WITH:
PROLIANT DL SERIES
PROLIANT SYNERGY SERIES
PROLIANT ML SERIES
PROLIANT EL SERIES
PROLIANT ALLETRA SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS FOR P69721-0A1:
- How much memory does P69721-0A1 include?
P69721-0A1 is a single-module kit: one 64GB DDR5 registered DIMM (1x64GB). Order multiple kits to populate additional channels or slots as your workload grows. - Which servers support P69721-0A1?
P69721-0A1 is supported in HPE Gen12 platforms including DL320, DL340, DL340e, DL360, DL380, DL380a, DL580, DL110, ML350, and EL140 Gen12, Synergy 480 Gen12, and the Alletra Storage Server 4210. - What are the key technical specs of P69721-0A1?
It is a 64GB DDR5-6400 (PC5-51200) 288-pin RDIMM, dual rank x4 (2Rx4) organization, EC8 registered ECC, 1.1V, HPE SmartMemory branded. CAS latency is CL46/CL52 depending on the profile.
Last Updated: 2026-10-22
Other sizes in this family
| Part number | Capacity | Type | Rank | Price | Availability |
|---|
Working out how many you need? Each server's memory page counts the modules for the capacity you want: see Compatible servers.
Specifications
Compatible servers
Each server opens that model's memory page, with its slot rules and a kit picker.
Part numbers
Every number below identifies this same part. Match any of them to the label on the part you are replacing.
Questions about P69721-0A1
Warranty and returns
5-year replacement warranty
Covered against hardware failure for 5 years from the date of purchase. While HPE's own warranty runs, HPE replaces a failed part through the HPE Enterprise Support Center. After that, send it back to us for a working replacement; you ship it to us and we pay Ground or Economy shipping on the replacement.
Ordered the wrong part?
It is the customer's responsibility to verify compatibility before ordering. A part ordered by mistake can be returned for a refund, less a 25% restocking fee, within 5 business days of receipt. Freight is not refunded, and factory-sealed items can only be returned unopened. Check Compatible servers before you order.
Start a return or claim
Complete the RMA request form and send it to us, or choose Warranty or return on the contact form.
Reviews of this part
No reviews yet for this part number. Write the first review
Write a Review
P69721-0A1 HPE 64GB (1x64GB) Dual Rank x4 DDR5-6400 CAS-46-45-45 EC8 Registered Smart Memory Kit
Filling a whole server?
Each server's memory page works out how many modules a capacity takes and where they go. For a full bill of materials, send it with your server model and we reply with pricing and availability within 24 hours.
