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Eight green DDR4 RDIMM modules in a row

OWC

OWC 128GB (8x16GB) DDR4 2133MHz CL15 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-PGGG-JQWKF

Eight-module kit provides 128 GB of registered ECC DDR4-2133 CL15 memory at 1.2 V for servers and workstations

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 128GB (8 x 16GB)

Rank 2Rx4

  • 128GB total capacity across eight 16GB modules
  • DDR4 2133MHz speed with CL15 latency for responsive server workloads
  • ECC registered design detects and corrects data errors in critical environments
  • 2V operation reduces power draw compared to higher-voltage DDR4
  • 288-pin RDIMM form factor fits compatible server and workstation slots

128GB DDR4 ECC RDIMM kit

This 128GB kit contains eight 16GB DDR4 2133MHz CL15 registered ECC modules. It is built for servers, workstations and NAS systems that require error-correcting registered memory. The dual-rank 2Rx4 organisation suits multi-channel platforms needing high capacity per slot.

Verify registered ECC support

Your motherboard and CPU must explicitly support DDR4 registered ECC RDIMMs; standard desktop boards will not accept them. Registered modules cannot be mixed with unbuffered memory in the same system. Confirm the platform accepts 288-pin DDR4 at 1.2V and 2133MHz before ordering.

JEDEC compliant build

Modules follow JEDEC PC4-17000 specifications and are RoHS compliant with no heat spreaders. The 288-pin RDIMM form factor fits standard server DIMM slots and the 1.2V operating voltage matches platform requirements. OWC tests every module in-house for reliability in continuous operation.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $839.99
Pricier than about 78% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $6.56 per GB
Cheaper than about 58% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number2R1D42R4128K
Total capacity128 GB (8 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Does the 128GB kit ship as eight 16GB modules or do I need to buy them separately?

The kit contains eight 16GB DDR4 2133MHz CL15 ECC Registered RDIMM modules — 128GB total — so nothing else is required for a full 128GB install.

How do I decide between this 128GB 2133MHz CL15 kit and a lower-capacity or higher-speed alternative?

Choose this 128GB (8×16GB) kit when your server or workstation needs maximum registered ECC capacity at the JEDEC 2133MHz CL15 1.2V spec; drop to a smaller kit only if the board has fewer than eight slots or the workload fits in less memory.

What does the 2133MHz PC4-17000 rating actually deliver once the modules are installed in a compatible server?

In a supported server or workstation the modules run at DDR4-2133 (PC4-17000) with CL15 latency at 1.2V, providing registered ECC bandwidth and error correction exactly to the JEDEC standard for the platform.

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