64GB OWC Memory Upgrade Module
only $679.99 $429.99 Limited supply! Only 16 available.

64GB OWC Memory Upgrade Module

PC21300 DDR4 ECC-R 2666MHz LRDIMM for Mac Pro (2019) 8-Core Models


Mfr P/N: 2666D4LRE64G OWC SKU: OWC2666D4LRE64G

$90.99 off - *NOW* Get Parallels Desktop Pro Edition - Windows/Multi OS Compatibility software for Mac - Only $29.00 with select OWC SSDs, HDDs, Memory, External Storage, and Optical Drives! (Limit 3 rebates, 1 rebate per qualifying item)

Must purchase with: Parallels Desktop Pro Edition for Mac - 1 Year License. SPECIAL PURCHASE

Memory Built by Mac People, for Over 30 Years

OWC Memory Trade-in Rebate

Trade In Your Original Memory and SAVE!

Within 60 days from the purchase date of qualifying OWC memory, you can choose to trade in your old memory for a cash rebate! Learn More »

availabilityIn Stock: Ships Same Day!
$679.99
$429.99
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Limited supply! Only 16 available.
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Overview

OWC Memory for Mac & PC

OWC Memory. Built for Macs + PCs.

Experience your computer's true performance potential.

Improve System Speed

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.

More Apps. More Files

Become a multi-tasking 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.

Save $$ vs Factory

Save BIG vs factory memory options. Plus, select among options not offered by the factory. OWC makes it easy to find the perfect upgrade to fit your needs.

Lab Tested Compatibility

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.

Lifetime Warranty

We built your OWC Memory upgrade to meet or exceed the toughest industry specs to provide years of worry-free service.

Step-by-Step Videos

Our detailed install videos guide your upgrade from start to finish. We provide all the steps to make your OWC Memory upgrade DIY easy.

OWC Logo

Experience the OWC Difference

Rely on the trusted name for memory upgrades, drives and accessories for over 30 years. Your OWC Memory upgrade was built by Mac and PC people, for Mac and PC people. Our expert support team is always a call or click away. You can talk to an actual human who will kindly provide advice and guidance for any questions you may have.

Being helpful and treating others the way you would want to be treated is not just a novel idea. It’s how we do business. It's how we’re built. It's what we’ve been doing since 1988.

IncludesIncludes

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    Data Rate

    • 2666MT/s

    I/O Clock Speed

    • 1333MHz

    Registration

    • Registered

    Error Correction

    • ECC

    Cycle Time

    • 0.75 ns

    Form Factor

    • LRDIMM

    Type of Memory

    • DDR4

    PC Speed

    • 21300

    Timing

    • CAS = 18.0
    • Full Parameters: 18-18-18-14

    Bandwidth

    • 21.3GB/s

    JEDEC

    • Fully compliant with JEDEC specifications

    Total Capacity

    • 64GB

    Voltage

    • 1.2 Volts

    Pin Count

    • 288-pin

    Chip Architecture

    • 8192M x 72

    Printed Circuit Board Type

    • Low noise 8-layer PCB

    RoHS Compliant

    • Yes

    Ambient Temperature

    • Operating: 32°F to 185°F (0°C to 85°C)
    1. Mac Pro can use either RDIMM or LRDIMM, but they cannot be combined. Additionally, LRDIMM modules must all be of the same size.
    2. Mac Pro supports up to 12 DIMMs installed in configurations of 4, 6, 8, or 12 DIMMs. Configurations of 5, 7, 9, 10, and 11 DIMMs are not supported. Other configurations of 1, 2, and 3 DIMMs are for diagnostic use only.

    Compatibility & Installation VideosCompatibility & Installation Videos

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    Note: Works with Apple and OWC 64GB LRDIMM. Cannot be combined with RDIMM.
    Mac Pro (Late 2019)
    Mac Pro (Late 2019)
    Late 2019
    Model ID: MacPro7,1
    3.5GHz 8-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro Rack (Late 2019)
    Mac Pro Rack (Late 2019)
    Late 2019
    Model ID: MacPro7,1
    3.5GHz 8-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro (Late 2019)
    Mac Pro (Late 2019)
    Late 2019
    Not Compatible
    Model ID: MacPro7,1
    3.3GHz 12-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro Rack (Late 2019)
    Mac Pro Rack (Late 2019)
    Late 2019
    Not Compatible
    Model ID: MacPro7,1
    3.3GHz 12-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro (Late 2019)
    Mac Pro (Late 2019)
    Late 2019
    Not Compatible
    Model ID: MacPro7,1
    3.2GHz 16-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro Rack (Late 2019)
    Mac Pro Rack (Late 2019)
    Late 2019
    Not Compatible
    Model ID: MacPro7,1
    3.2GHz 16-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro (Late 2019)
    Mac Pro (Late 2019)
    Late 2019
    Not Compatible
    Model ID: MacPro7,1
    2.7GHz 24-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro Rack (Late 2019)
    Mac Pro Rack (Late 2019)
    Late 2019
    Not Compatible
    Model ID: MacPro7,1
    2.7GHz 24-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro (Late 2019)
    Mac Pro (Late 2019)
    Late 2019
    Not Compatible
    Model ID: MacPro7,1
    2.5GHz 28-Core Xeon
    Detailed SpecsInstall Videos
    Mac Pro Rack (Late 2019)
    Mac Pro Rack (Late 2019)
    Late 2019
    Not Compatible
    Model ID: MacPro7,1
    2.5GHz 28-Core Xeon
    Detailed SpecsInstall Videos
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