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Green printed circuit board with black memory chips on both sides 288 gold edge contacts no heat spreader

OWC

OWC 32GB DDR5 4800 CL40 2Rx8 288-pin 1.1V ECC Registered RDIMM server RAM

SKU CH-53JA-YPF4S

32 GB DDR5 4800 CL40 ECC Registered RDIMM for server and workstation upgrades

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • 32 GB capacity supports larger workloads and more virtual machines
  • DDR5 4800 speed delivers high bandwidth for demanding server tasks
  • ECC registered design corrects errors and stabilises multi-DIMM configurations
  • 1 V operation reduces power draw and heat in dense chassis
  • JEDEC and RoHS compliant for broad platform compatibility

Server-grade DDR5 ECC RDIMM

This 32GB OWC module delivers DDR5 4800 speed with CL40 latency at 1.1V. It uses a 2Rx8 registered design with ECC for data integrity in workstations and servers. The 288-pin form factor fits compatible DDR5 slots. It replaces Micron part numbers MTC20F2085S1RC48B and MTC20F2085S1RC48BR.

JEDEC compliance and direct replacement

The module meets JEDEC standards and is ROHS compliant for a warranty-safe upgrade. It is tested to meet or exceed OEM specifications for the listed Micron parts. No heat spreader is included, matching the original component design. This ensures physical compatibility in dense server chassis where clearance is tight.

For registered ECC platforms only

This memory suits administrators upgrading or repairing servers and workstations that require registered ECC DDR5. It will not work in standard desktop computers or consumer laptops. It cannot be mixed with unbuffered or load-reduced ECC modules. Buyers needing unbuffered memory or higher capacities per module should look elsewhere.

How it compares

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

Price $887.99
Pricier than about 79% of the 6,523 comparable items (median $188.99).
Total capacity 32 GB
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $27.75 per GB
Pricier than about 89% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R832 GB
Total capacity32 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Will the 2Rx8 rank configuration require any specific slot population rules when I add more modules later?

Registered ECC RDIMMs follow the motherboard's documented population order; keep identical capacity, speed and rank (2Rx8) across all populated channels for stable operation.

What thermal limit appears first when this DDR5 4800 module runs at 1.1 V continuously in a fully populated server?

The DRAM junction temperature reaches its JEDEC-rated maximum before the 1.1 V supply or the registered buffer becomes a bottleneck.

How much extra power and noise does a full bank of these 32 GB RDIMMs add compared with a half-populated chassis?

Each module draws only its 1.1 V operating current; total incremental heat scales linearly with module count and stays within the platform's existing cooling design.

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