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Green printed circuit board with black memory chips on both sides and gold edge contacts

OWC

OWC 5R6D54R4128G 128GB DDR5 5600 CL46 4Rx4 288-pin 1.1V ECC Registered RDIMM memory upgrade

SKU CH-3QXP-9BVX8

A single 128GB DDR5 5600 ECC registered RDIMM with CL46 latency and 1.1V operation for compatible Supermicro SuperServer systems

  • Capacity128GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5600 (PC5 44800)
  • CAS Latency46
  • Voltage1.1V
  • ECCYes

Capacity 128GB

  • 128 GB capacity expands server memory headroom
  • DDR5 5600 speed supports high-throughput workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces platform power draw
  • Validated for Supermicro SuperServer SYS-221BT series

Target system and purpose

This 128GB DDR5 ECC Registered RDIMM is built for Supermicro SuperServer SYS-221BT models including the DNC8R, DNTR, HNC8R, HNC9R and HNR. It serves workstations, NAS appliances, servers and network switches that require registered error-correcting memory.

Capacity and rank as the fitment gate

The module delivers 128GB in a single 4Rx4 288-pin stick rated at DDR5 5600 with CL46 latency. Registered ECC DIMMs of this rank and voltage cannot be mixed with unbuffered or load-reduced memory, so the slot population must match the server's qualified configuration.

Thermals, noise and power in normal use

Operating at 1.1V without a heat spreader, the module relies on the chassis airflow typical of 1U and 2U server designs. Power draw stays within JEDEC limits for DDR5 5600 registered parts, adding no audible noise beyond the system fans already moving air across the DIMM slots.

Highlights

  • 128 GB capacity expands server memory headroom
  • DDR5 5600 speed supports high-throughput workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces platform power draw
  • Validated for Supermicro SuperServer SYS-221BT series

Specifications

BrandOWC
Part Number5R6D54R4128G
Capacity128GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5600 (PC5 44800)
CAS Latency46
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemSupermicro SuperServer SYS-221BT-DNC8R
Supermicro SuperServer SYS-221BT-DNTR
Supermicro SuperServer SYS-221BT-HNC8R
Supermicro SuperServer SYS-221BT-HNC9R
Supermicro SuperServer SYS-221BT-HNR

Other versions of this model

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Questions about this item

How does the 5600 MT/s speed translate to real-world throughput in a Supermicro SuperServer?

At 5600 MT/s the module delivers 44800 MB/s peak bandwidth per DIMM, so a fully populated server sees that rate multiplied by the number of active channels.

What does the PC5-44800 designation cap in practice?

PC5-44800 is the JEDEC standard name for DDR5 5600; it caps the module at 5600 MT/s and 1.1 V, and the memory controller will not exceed those limits.

Will the 288-pin RDIMM fit the DIMM slots in a SYS-221BT-HNC9R?

Yes, the 288-pin registered DIMM matches the DDR5 RDIMM slots used in the listed Supermicro SuperServer models.

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