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Green circuit board DDR5 RDIMM with black memory chips, no heat spreader

OWC

OWC 128GB DDR5 4800 CL40 4Rx4 ECC Registered RDIMM Gigabyte R283-Z91/Z92/Z93/Z94/Z95

SKU CH-X81B-YAZGS

Adds 128GB of DDR5 4800 ECC registered memory to Gigabyte R283-Z91 through Z95 servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 128GB

  • 128GB capacity expands server memory headroom
  • DDR5 4800 speed delivers high bandwidth for workloads
  • ECC registered design protects data integrity in critical systems
  • 1V operation reduces power draw per module
  • Validated for Gigabyte R283-Z91 through Z95 platforms

128 GB DDR5 RDIMM for Gigabyte

This 128 GB DDR5 4800 CL40 ECC Registered RDIMM is built for Gigabyte R283-Z91 through Z95 workstations and servers. It delivers a single-module capacity upgrade for platforms that require registered memory with error correction.

Replaces unbuffered or load-reduced DDR5

The module cannot be mixed with unbuffered or ECC load-reduced DIMMs. The jump is worth it when your R283-Z9x system needs maximum registered capacity per slot and the motherboard qualifies 4Rx4 organisation at 1.1 V.

Tool-free DIMM installation.

Align the notch on the 288-pin edge connector and press until the latches engage. The most common issue is installing this registered RDIMM into a board or slot that only accepts unbuffered memory, which prevents boot.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $4,054.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
CAS latency 40
Higher than about 70% of the 483 comparable items (median 22).
Price per GB $31.68 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D54R4128G
Total capacity128 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsGigabyte R283-Z91
Gigabyte R283-Z92
Gigabyte R283-Z93
Gigabyte R283-Z94
Gigabyte R283-Z95

Other versions of this model

5 more in the same range

Questions about this item

Will the 288-pin 1.1V DDR5 4800 ECC RDIMM fit the Gigabyte R283-Z91 through Z95 server boards?

Yes. The module is a 288-pin DDR5 4800 CL40 4Rx4 ECC Registered RDIMM built for those exact Gigabyte R283-Z91, Z92, Z93, Z94 and Z95 systems.

What is the correct way to seat this 128GB 4Rx4 registered DIMM so the server recognises the full capacity?

Power down, open the chassis, align the 288-pin key notch with the slot, press firmly until both retention clips click, then verify in BIOS that all 128GB appear at DDR5 4800.

Does the 4Rx4 ECC registered module require any firmware update or periodic replacement on the Gigabyte R283-Z91 to Z95 platforms?

No scheduled replacement is needed; the JEDEC-standard 1.1V DDR5 4800 RDIMM runs for the system life, and only a BIOS update would be required if the board vendor releases one for memory compatibility.

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