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Green rectangular DDR5 memory module with gold edge connectors and black chips, no heat spreader

OWC

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

SKU CH-SS99-KV26B

32 GB DDR5 ECC registered server DIMM running at 4800 MT/s with CL40 latency and 1.1 V operation

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • ECC registered design protects data integrity in servers
  • 32 GB DDR5 4800 CL40 delivers high throughput for demanding workloads
  • 1 V operation reduces power draw and heat
  • 2Rx8 288-pin RDIMM fits registered DIMM slots
  • JEDEC and ROHS compliant for warranty-safe upgrades

Server ECC RDIMM Upgrade

This 32GB DDR5 module is built for workstations and servers that require registered ECC memory. It will not function in standard desktop computers and cannot be mixed with unbuffered or load-reduced DIMMs.

Registered DDR5 4800 CL40 Spec

The module runs at DDR5 4800 (PC5-38400) with CL40 latency at 1.1V on a 288-pin 2Rx8 layout. This exact specification decides whether the part matches the slot and the memory controller.

For JEDEC-Compliant Server Builds

Buyers maintaining or expanding JEDEC-standard server platforms using Samsung M321R4GA3BB0-CQK or M321R4GA3BB6-CQK equivalents will find a direct match. Builders needing unbuffered desktop RAM, load-reduced DIMMs, or a different speed grade should look elsewhere.

How it compares

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

Price $789.99
Pricier than about 77% 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 $24.69 per GB
Pricier than about 86% 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

How does the 4800 MT/s speed translate once the module is installed in a server?

The module runs at the JEDEC-standard 4800 MT/s data rate with CL40 latency, delivering PC5-38400 bandwidth when the platform supports DDR5-4800 registered memory.

What does the registered ECC interface mean for compatibility and error handling?

Registered ECC adds a register between the DRAM and the memory controller and provides single-bit error correction; it only works in server or workstation platforms that explicitly support RDIMM ECC memory.

What physical slot and keying does the 288-pin RDIMM require?

It needs a 288-pin DDR5 RDIMM socket; the module is 1.1 V, has no heat spreader and follows the standard RDIMM height so it fits normal server DIMM slots.

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