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Eight green DDR5 RDIMM modules in a row

OWC

OWC 1TB (8x128GB) DDR5 5200 CL42 4Rx4 ECC Registered RDIMM server RAM

SKU CH-V2T0-M6R2H

Eight 128 GB DDR5 5200 CL42 registered ECC modules deliver 1 TB for workstations and servers

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 5200 (PC5 41600)
  • CAS latencyCL42
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 1TB (8 x 128GB)

Show 4 more

Rank 4Rx4

  • Massive 1TB capacity via eight 128GB modules
  • DDR5 5200 speed rated at PC5-41600
  • ECC registered design protects data integrity
  • 4Rx4 organisation maximises density per slot
  • JEDEC and RoHS compliant for warranty-safe upgrades

Kit purpose and audience

This OWC kit supplies 1TB of DDR5 server memory as eight 128GB registered ECC RDIMMs running at 5200 MT/s with CL42 latency and 1.1V operation. It is built for workstations and servers that require registered dual-rank modules and cannot use standard desktop memory. Buyers who need unbuffered DIMMs or consumer platforms should look elsewhere.

Compatibility checks

Verify that your system accepts 288-pin DDR5 RDIMMs with 4Rx4 organisation and registered ECC operation before ordering. The modules will not work in boards limited to unbuffered or load-reduced memory, and they cannot be mixed with those types. Confirm the platform supports the stated speed and voltage combination.

Thermals and power

Each module operates at 1.1V without a heat spreader, relying on chassis airflow for cooling in typical server environments. Registered buffering adds minimal overhead to power draw compared with unbuffered equivalents at the same data rate. Acoustic impact is negligible because the kit contains no active cooling components.

How it compares

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

Price $29,975.99
Pricier than about 94% of the 6,523 comparable items (median $188.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 92% of the 6,064 comparable items (median 32 GB).
Price per GB $29.98 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number5R2D54R41TBK
Total capacity1 TB (8 × 128 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5200 (PC5 41600)
Memory
CAS latencyCL42
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

Questions about this item

What is included in the OWC 1TB DDR5 5200 kit and do I need any extra parts?

The kit contains eight 128GB DDR5 5200 CL42 4Rx4 288-pin 1.1V ECC Registered RDIMM modules for a total of 1TB. No additional memory parts are required; install all eight modules into compatible server or workstation slots.

How do I choose between the listed versions or capacities for this OWC DDR5 5200 server memory?

This product is a single 1TB kit comprised of eight 128GB modules at DDR5 5200 CL42 4Rx4. There are no alternate capacities or speed grades in this listing; select this kit when your platform requires 1TB of registered ECC DDR5 in an eight-module configuration.

What does the DDR5 5200 PC5-41600 CL42 rating mean once the modules are installed in a real server?

The modules run at 5200 MT/s with a CAS latency of 42 cycles at 1.1V, delivering the JEDEC-standard PC5-41600 data rate. Actual throughput depends on the memory controller, channel population and BIOS settings of the specific workstation or server.

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