P64707-B21 HPE 64GB (1x64GB) Dual Rank x4 DDR5-5600 CAS-46-45-45 EC8 Registered Smart Memory Kit

HPE Gen11 Server Memory

HPE 64GB (1x64GB) Dual Rank x4 DDR5-5600 CAS-46-45-45 EC8 Registered Smart Memory Kit

SKU: P64707-B21
    NEXT DAY Delivery if ordered by the daily cutoff on business days · FREE Ground shipping on US orders over $100

    Fits 5 HPE ProLiant server models. See the list

    In Stock: Qty 73
    Condition:
    NewIf factory sealed packaging is required, please request a quote below and enter your special request in the 'Notes' field.
    Warranty: 5 Years
    Was $6,459.00
    $3,786.00 Today's price
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    Part number cross-reference

    Part number
    P64707-B21

    Overview

    This item, P64707-B21, is the HPE option part number for the product described as 64GB (1x64GB) Dual Rank x4 DDR5-5600 CAS-46-45-45 EC8 Registered Smart Memory Kit. Further details below.

    Unlock unparalleled performance for your server with this 64GB DDR5-5600 ECC Registered memory module. This item delivers exceptional capacity and speed, ideal for handling memory-intensive workloads, large databases, and complex virtual environments. Operating at a rapid 5600 MHz with CL46 latency, this module maximizes data throughput and minimizes latency.

    This 64GB DDR5 memory module is compatible with Gen11 servers using 5th Generation Intel processors. The list of compatible machines includes but may not be limited to these models. Experience the enhanced reliability and data integrity provided by ECC Registered memory, vital for maintaining uptime and preventing data corruption in critical applications.

    HPE Option Part #: P64707-B21
    HPE Spare Part #: P65255-001
    HPE Assembly Part #: P53627-0A1

    PRODUCT SPECIFICATIONS FOR P64707-B21:

    • Capacity: 64 GB
    • Upgrade Type: System specific
    • Type: DRAM memory module
    • Technology: DDR5 SDRAM
    • Form Factor: DIMM 288-pin
    • Speed: 5600 MHz (PC5-44800)
    • Latency Timings: CL46 (46-45-45)
    • Data Integrity Check: ECC
    • Features: Dual Rank, registered
    • Chips Organization: X4
    • Voltage: 1.1 V

    COMPATIBLE WITH:

    PROLIANT DL SERIES

    DL320 Gen11(5th Gen CPU) DL360 Gen11(5th Gen CPU) DL380 Gen11(5th Gen CPU) DL380a Gen11(5th Gen CPU)

    PROLIANT ML SERIES

    ML110 Gen11(5th Gen CPU) ML350 Gen11(5th Gen CPU)

    OTHER HPE MACHINES

    DX380 Gen11(5th Gen CPU) Synergy 480 Gen11(5th Gen CPU)

    ** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.

    FREQUENTLY ASKED QUESTIONS FOR P64707-B21:

    Q: Will this 64GB memory module work with my HPE Gen11 server?
    A: This DDR5 module is compatible with HPE Gen11 servers utilizing 5th Generation Intel processors. Consult your server's documentation to confirm. The list of compatible machines includes but may not be limited to those specified in the product description.
    Q: How does 64GB of memory benefit my server?
    A: 64GB allows you to run medium-sized databases, application servers, and a higher number of virtual machines with improved performance compared to lower capacities.
    Q: What is the advantage of Dual Rank memory in this module?
    A: Dual Rank improves memory performance by allowing the memory controller to access two sets of memory chips simultaneously, increasing data throughput.
    Q: What is the CAS Latency (CL46) of this memory?
    A: The CAS Latency is 46. Lower latency generally means quicker response times from the memory, contributing to faster performance.

    HPE PARTSURFER INFO FOR P64707-B21

    Spare PNDescription
    P68075-001SPS-DIMM,64GB PC5-5600B-R,4Gx4 CN

    Last Updated: 2026-10-31

    Compatible servers

    Each server opens that model's memory page, with its slot rules and a kit picker.

    All HPE Gen11 Server Memory

    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

    1 review

    HPE memory

    “Authentic HPE memory, delivered quickly!”

    Barry Osborn · Oct 13, 2026

    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.

    $3,786.00In stock: 73