We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular DDR5 RDIMM module with black chips and gold contacts

OWC

OWC 16GB DDR5 5600 CL46 1Rx4 288-pin 1.1V ECC Registered RDIMM server RAM

SKU CH-527M-RP01P

16 GB DDR5 5600 ECC registered RDIMM with CL46 latency and 1.1 V operation

  • Capacity16GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5600 (PC5 44800)
  • CAS LatencyCL46
  • Voltage1.1V
  • ECCYes

Capacity 16GB

  • 16 GB DDR5 ECC RDIMM adds reliable capacity to servers
  • CL46 latency at 5600 MT/s delivers responsive throughput
  • 1 V operation reduces power draw per module
  • 1Rx4 single-rank layout keeps signal integrity clean
  • JEDEC and RoHS compliant for warranty-safe upgrades

Server ECC RDIMM upgrade

This OWC module is a 16GB DDR5 5600 CL46 registered DIMM built for select workstations and servers. It operates at 1.1V with a 1Rx4 organisation and a 288-pin interface. The part carries ECC and registered buffering for data integrity in multi-socket platforms. It will not work in standard desktop computers.

Capacity and headroom

A single 16GB stick adds substantial memory to compatible systems and handles typical virtualization or database workloads. Registered signalling and ECC protect data at scale but the module lacks a heat spreader, so sustained heavy loads depend on chassis airflow. Mixing with unbuffered or load-reduced DIMMs is not supported.

Registered DDR5 requirement

The decisive specification is the registered DDR5 ECC RDIMM form factor; only motherboards that explicitly support registered DDR5 5600 memory can use this module. Buyers whose platforms require unbuffered DDR5 or an earlier DDR generation cannot install this part.

Highlights

  • 16 GB DDR5 ECC RDIMM adds reliable capacity to servers
  • CL46 latency at 5600 MT/s delivers responsive throughput
  • 1 V operation reduces power draw per module
  • 1Rx4 single-rank layout keeps signal integrity clean
  • JEDEC and RoHS compliant for warranty-safe upgrades

Specifications

BrandOWC
Part Number5R6D51R416GB
Capacity16GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5600 (PC5 44800)
CAS LatencyCL46
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will this 1Rx4 DDR5 5600 CL46 288-pin ECC RDIMM work alongside other registered DDR5 modules I already have?

Mixing is only reliable when every module matches in capacity, speed, rank and manufacturer; the maker advises identical DIMMs for stable operation.

How can I confirm the 16 GB DDR5 5600 CL46 1.1 V ECC RDIMM is running correctly after installation?

Check the BIOS or UEFI memory report for 5600 MT/s speed, CL46 timings, 1.1 V voltage and ECC registered status on the slot you populated.

Does the single 16 GB DDR5 5600 PC5-44800 CL46 288-pin ECC RDIMM ship with any extra parts or cables?

Only the memory module itself is included; no heat spreader, cables, brackets or additional accessories come in the package.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.