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Two green DDR5 ECC registered RDIMM modules, no heat spreader

OWC

OWC 64GB (2x32GB) DDR5 4800 CL40 ECC Registered RDIMM server RAM

SKU CH-8J9G-P3G3R

A 64 GB dual-channel DDR5 4800 CL40 ECC registered RDIMM kit for compatible servers and workstations

  • Capacity64GB (2 x 32GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 64GB (2 x 32GB)

Show 4 more configurations

Rank 2Rx8

  • 64 GB dual-channel kit expands server memory capacity
  • DDR5 4800 speed delivers high data throughput
  • CL40 latency and 1.1 V operation balance responsiveness with efficiency
  • ECC registered design detects and corrects errors for reliability
  • 288-pin 2Rx8 modules comply with JEDEC and RoHS standards

Server DDR5 upgrade kit

This OWC kit supplies 64GB of DDR5 memory as two 32GB registered ECC modules rated at 4800 MT/s with CL40 latency. It is built for workstations and servers that require registered DIMMs and will not function in standard desktop platforms. The dual-channel kit lets compatible systems reach the full capacity in a matched pair.

Thermals and power draw

Each module operates at 1.1V JEDEC standard voltage without a heat spreader, relying on chassis airflow for cooling. Registered buffering adds minimal electrical load while the ECC circuitry corrects single-bit errors during normal operation. Power consumption scales with the 4800 speed rating and 2Rx8 organisation under typical server workloads.

Build integration

The 288-pin RDIMM form factor fits only motherboards designed for registered ECC DDR5; it cannot be mixed with unbuffered or load-reduced modules. Installing the matched pair populates two slots in a dual-channel configuration, leaving remaining slots free for further capacity expansion. JEDEC and RoHS compliance ensures warranty-safe integration into qualified OEM platforms.

Highlights

  • 64 GB dual-channel kit expands server memory capacity
  • DDR5 4800 speed delivers high data throughput
  • CL40 latency and 1.1 V operation balance responsiveness with efficiency
  • ECC registered design detects and corrects errors for reliability
  • 288-pin 2Rx8 modules comply with JEDEC and RoHS standards

Specifications

BrandOWC
Part Number4R8D52R8064P
Capacity64GB (2 x 32GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Other versions of this model

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Questions about this item

How do I install the 288-pin DDR5 RDIMMs and what step is often missed?

Power off the server, open the chassis, align the notch on each 288-pin module with the slot key, press firmly until both locking tabs click, then verify in BIOS that all 64GB are detected at 4800 MT/s.

What maintenance or replacement will the 2Rx8 ECC registered kit need over time?

No scheduled maintenance is required; ECC corrects single-bit errors on the fly, and a module should only be swapped if the system logs report uncorrectable errors or a DIMM fails POST.

What limit appears first when the 1.1 V modules run sustained workloads?

The CL40 latency at 4800 MT/s sets the throughput ceiling; thermals stay within JEDEC limits without a heat spreader, so bandwidth saturates before temperature throttles.

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