Skip to main content
OWC 128GB (2x64GB) DDR5 4800MHz ECC RDIMM 2Rx4 288-pin Memory RAM | PC5-38400, ECC Registered, 2Rx4, 1.1V, CL40, Compatible with Select Workstations, Servers, and NAS Systems
OWC

OWC 128GB (2x64GB) DDR5 4800MHz ECC RDIMM 2Rx4 288-pin Memory RAM

Bottom line: The OWC 128GB DDR5 4800MHz ECC RDIMM 2Rx4 288-pin Memory RAM is a specs-and-price decision rather than a crowd-consensus one in the memory (ram) category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

Check price on Amazon

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Check price on Amazon → Compare to similar memory (ram)

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For desktop and laptop memory upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Backed by OWC's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored OWC 128GB DDR5 4800MHz ECC RDIMM 2Rx4 288-pin Memory RAM using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. OWC's memory (ram) lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory (ram) of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • OWC 128GB UPGRADE: Consists of 2pcs of 64GB DDR5 4800 PC5-38400 CL40 2Rx4 288-pin 1.1V ECC Registered DIMM Memory RAM Module Upgrade Kit for Select Workstations or Servers.
  • *** IMPORTANT: The memory offered here is NOT compatible with systems powered by AMD Ryzen -or- AMD Threadripper CPU's. ***
  • 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 -or- ECC LOAD REDUCED memory.
  • 100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs.
  • MAXIMIZE YOUR SERVER: With OWC's ECC Registered Server Memory, you 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.

Full Specifications

BrandOWC
Voltage1.1 volts_of_direct_current
RAM Size128 GB
Model NameOWC 128GB DDR5 ECC Registered RDIMM
Form FactorWorkstation Server
Memory Speed4800 MHz
Model NumberOWC4R8D52R4128P-B923-SF
100% COMPLIANTJEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs.
Number of Pins288
Mfr Part NumberOWC4R8D52R4128P-B923-SF
INDUSTRY LEADINGConsumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing.
Memory GenerationDDR5
Compatible DevicesWorkstation Server
Memory Form FactorRDIMM
Additional FeaturesName Brand Components
Computer Memory Size128 GB
MAXIMIZE YOUR SERVERWith OWC's ECC Registered Server Memory, you will extend the life of your old infrastructure or save money when building a new one.
Warranty DescriptionOWC Memory Lifetime Limited Warranty including Advanced Replacement Program
RAM Memory TechnologyDDR5 4800
Column Address Strobe Latency40
Full listing titleOWC 128GB (2x64GB) DDR5 4800MHz ECC RDIMM 2Rx4 288-pin Memory RAM | PC5-38400, ECC Registered, 2Rx4, 1.1V, CL40, Compatible with Select Workstations, Servers, and NAS Systems

Ready to buy?

OWC 128GB (2x64GB) DDR5 4800MHz ECC RDIMM 2Rx4 288-pin Memory RAM | PC5-38400, ECC Registered, 2Rx4, 1.1V, CL40, Compatible with Select Workstations, Servers, and NAS Systems is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

Related Memory (RAM)

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
OWC 128GB (2x64GB) DDR5 4800MHz ECC RDIMM 2Rx4 288-pin Memory RAM | PC5-38400, ECC Registered, 2Rx4, 1.1V, CL40, Compatible with Select Workstations, Servers, and NAS Systems
View on Amazon →