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  • $716.32
  • Free 30-day Returns
  • Sold by Direct from manufacturerOWC
    4.7 (29 seller ratings)

    Shipped by Direct from manufacturerOWC

    Price alert
    Server System configurator/ABS
    Shop it at NeweggBusiness.

    Meet Your Seller

    OWC 64GB (8x8GB) DDR4 2666MHz PC4-21300 CL19 1RX4 ECC Registered RDIMM 1.2V 288-pin Memory RAM Upgrade for Server

    • 8GB
    • 16GB
    • 32GB
    • 32GB (2 x 16GB)
    • 32GB (4 x 8GB)
    • 64GB
    • 64GB (2 x 32GB)
    • 64GB (4 x 16GB)
    • 64GB (8 x 8GB)
    • 128GB
    • 128GB (2 x 64GB)
    • 128GB (4 x 32GB)
    • 128GB (8 x 16GB)
    • 256GB (2 x 128GB)
    • 256GB (4 x 64GB)
    • 256GB (8 x 32GB)
    • 512GB (4 x 128GB)
    • 512GB (8 x 64GB)
    • 1TB (8 x 128GB)
    • 1Rx4
    • 2Rx4
    • 4Rx4
    • ECC REGISTERED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED memory.
    • OWC 64GB UPGRADE: Consists of 8pcs of 8GB DDR4 2666MHz PC4-21300 CL19 1RX4 ECC Registered RDIMM 1.2V 288-pin Memory Modules
    • 100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs
    • MAXIMIZE YOUR SERVER: With OWC's ECC Load Reduced Server Memory, Our RAM upgrades will extend the life of your old infrastructure or save money when building a new one
    • INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing
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    Overview
    Specs
    Reviews

    Any questions? Ask CelesteSM will help you find out quickly.

    OWC DDR4 PC4-21300 2666MHz ECC REGISTERED DIMM SPECIFICATIONS

    Technology DDR4
    Speed PC4-21300 2666MHz CL19
    Form Factor 288PIN ECC REGISTERED DIMM
    ECC Type ECC REGISTERED
    Voltage 1.2v
    Compatibility Server, Workstation, NAS System
    Backward Compatibility Also Compatible with 2133MHz, 2400MHz
    ECC ddr4 ram 2666 REGISTERED memory mac pro pc4-21300 memory 32gb 64gb 128gb 2019 ram 7,1
    DDR5 ECC REGISTERED REG MEMORY RAM MODULE DIMM STICK 32gb 16gb 8gb 288pin 4800MHz PC5-38400 CL40
    ECC ddr4 ram 2666 REGISTERED memory mac pro pc4-21300 memory 32gb 64gb 128gb 2019 ram 7,1

    OWC DDR4 PC4-21300 2666MHz ECC REGISTERED DIMM SPECIFICATIONS

    Technology DDR4
    Speed PC4-21300 2666MHz CL19
    Form Factor 288PIN ECC REGISTERED DIMM
    ECC Type ECC REGISTERED
    Voltage 1.2v
    Compatibility Server, Workstation, NAS System
    Backward Compatibility Also Compatible with 2133MHz, 2400MHz
    ecc registered server dimm memory ram upgrade NAS 64gb 32gb 16gb 8gb 288pin stick module
    unbuffered dimm memory ram upgrade desktop workstation non ecc ram 288pin stick module
    ecc registered server dimm memory ram upgrade NAS 64gb 32gb 16gb 8gb 288pin stick module
    OWC DDR4 memory is Fully compliant with JEDEC specifications, ROHS compliant, providing a warranty safe upgrade. OWC Memory is the most cost effective and simple DIY upgrade you can install to unleash your Mac or PC's full potential and speed up overall responsiveness. Become a multitasking maven when you upgrade your Mac or PC with OWC Memory. Open more apps. Open larger files. Plus, work with multiple files all at the same time. We test every OWC memory module at our in house lab so you can upgrade with the confidence that your memory is built to last.

    We built your OWC Memory upgrade to meet or exceed the toughest industry specs to provide years of worry-free service. OWC recommends that all DIMMs be the same capacity, speed, and manufacturer to ensure optimal memory performance.

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
    • CONTACT

    Return Policies

    • Return for refund within: 30 days
    • Return for replacement within: 60 days
    • This item is covered by OWC Return Policy

    Manufacturer Contact Info

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    The OWC 64GB kit is server memory comprising eight 8GB DDR4-2666 ECC registered RDIMMs, designed for compatible servers and workstations that support 288-pin, 1Rx4 modules.

    Recommended For

    • Server owners upgrading a DDR4 platform that explicitly supports 2666 MT/s ECC RDIMMs and has eight compatible DIMM slots; this kit supplies 64GB as eight 8GB modules.
    • Workstation users whose system specifically requires registered ECC memory and who want an eight-module kit for supported compute or professional workloads.
    • NAS or home-lab builders expanding a compatible DDR4 RDIMM system, provided the system’s memory rules support this module type, capacity, rank, and speed.

    Real-World Use Scenarios

    • On a compatible DDR4 server running Proxmox or similar virtualization software, adding this 64GB kit can give multiple virtual machines and containers more memory to share, helping when the host is running short of RAM.
    • For a supported NAS or storage server, the upgrade can provide more memory for services such as file sharing and ZFS; ECC can correct certain memory errors, but it does not replace backups or other data-protection measures.
    • When an older compatible server is being kept in service, replacing or expanding its memory with this kit can add capacity for current workloads without replacing the whole system; check the server’s DIMM population rules before installation.
    • In a compatible workstation used for large projects or several memory-heavy applications at once, the added capacity can reduce reliance on disk swapping when the previous memory limit was the bottleneck.
    • For a small development or test server, the kit can give several test environments more room to run together; the actual benefit depends on their memory needs and whether the server supports this RDIMM type.