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

OWC

OWC 16GB DDR5 4800 CL40 1Rx8 288-pin ECC Registered RDIMM server RAM

SKU CH-99NW-8QZFX

16 GB DDR5 ECC registered RDIMM running at 4800 MT/s with CL40 latency for servers and workstations

  • Capacity16GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes
  • ECC registered design protects data integrity in servers
  • 16 GB DDR5 4800 CL40 boosts throughput for heavy workloads
  • 1 V operation reduces power draw under load
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • 288-pin 1Rx8 RDIMM fits compatible server slots

16 GB DDR5 ECC RDIMM for Servers

This 16 GB DDR5 4800 module is an ECC Registered DIMM built for workstations and servers. It runs at 1.1 V with CL40 latency and a 1Rx8 organisation. The 288-pin form factor fits DDR5 server platforms that require registered memory with error correction.

Replaces Samsung M321R2GA3BB6-CQK

The module is a direct replacement for the Samsung part number M321R2GA3BB6-CQK and matches its JEDEC-standard PC5-38400 specification. Upgrading is worthwhile when expanding capacity in a compatible server or when a failed DIMM must be swapped for a validated, ROHS-compliant alternative.

Suited for ECC Registered platforms only

This memory suits administrators maintaining DDR5 servers or workstations that mandate registered ECC DIMMs and cannot use unbuffered or load-reduced modules. It will not work in standard desktop computers or in systems that require unbuffered ECC or non-ECC memory. Builders needing mixed-rank configurations or higher-density modules should look elsewhere.

Points forts

  • ECC registered design protects data integrity in servers
  • 16 GB DDR5 4800 CL40 boosts throughput for heavy workloads
  • 1 V operation reduces power draw under load
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • 288-pin 1Rx8 RDIMM fits compatible server slots

Caractéristiques

BrandOWC
Part Number4R8D51R816GB
Capacity16GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
Heat SpreaderNo

Questions sur cet article

Will this 288-pin DDR5 RDIMM fit in a standard desktop motherboard?

No, this registered ECC module requires a workstation or server board that supports RDIMM memory; standard desktop boards only accept unbuffered DIMMs.

What is the correct seating procedure for the 288-pin DDR5 module, and what step is often missed?

Align the notch with the slot key, press firmly until both retention clips click, then verify the module height is even; the step often missed is confirming both clips have fully engaged.

Does the 1.1V DDR5 module require any firmware updates or periodic maintenance after installation?

No firmware updates are needed for the memory itself; ensure the system BIOS is current for DDR5 4800 support, and reseat modules only if errors appear during routine diagnostics.

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