1-800-275-4576
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
- Memory is the most cost-effective DIY upgrade you can make to your Mac.
- Unleash the true speed and performance of your system and applications.
- Experience increased efficiency and productivity. Open more apps and files, all at the same time.
- Warranty Safe Upgrade
- Free step-by-step installation videos
- Why do I need more Memory?
- 30 Day Money Back Guarantee
- OWC Memory Lifetime Limited Warranty including Advanced Replacement Program
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 »
In Stock: Ships Same Day!
Overview
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.
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.
Includes
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- (1) 64GB PC21300 2666MHz DDR4 LRDIMM memory module
- OWC Memory Lifetime Limited Warranty including Advanced Replacement Program
Specs
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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)
- Mac Pro can use either RDIMM or LRDIMM, but they cannot be combined. Additionally, LRDIMM modules must all be of the same size.
- 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 Videos
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Mac Pro
Not Compatible
Not Compatible
Not Compatible
Not Compatible
Not Compatible
Not Compatible
Not Compatible
Not Compatible
Videos
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