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 240-pin DDR3 ECC registered RDIMM module, no heat spreader

OWC

OWC 16GB DDR3 1600 ECC Registered RDIMM 1R6D32R416GB

SKU CH-DZVR-WZPAY

16GB DDR3 1600 ECC registered RDIMM for servers, workstations and NAS systems

  • Total capacity16 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • ECC protection prevents data corruption in critical workloads
  • Registered design supports stable operation in multi-module server configurations
  • 16 GB capacity expands memory headroom for virtualization and databases
  • DDR3 1600 CL11 at 1.5 V matches JEDEC-standard timing and voltage
  • Direct replacement for HP part numbers 684066B21, 687465001 and A2Z52AA

DDR3 1600 ECC RDIMM

The OWC 16GB DDR3 1600 PC3-12800 CL11 module is a 240-pin registered DIMM designed for workstations, servers and NAS systems. It operates at 1.5V with ECC error correction and a 2Rx4 rank configuration. This memory will not function in standard desktop computers and cannot be mixed with unbuffered modules.

Sustained-load behaviour

JEDEC-standard compliance and ROHS adherence mean the module maintains its rated 1600MHz speed and CL11 latency during continuous server workloads. Registered buffering reduces electrical load on the memory controller, helping stability when all slots are populated in multi-socket platforms.

Registered ECC constraint

The single specification that decides fitment is the registered ECC RDIMM form factor; only systems that explicitly support 240-pin DDR3 registered ECC memory can use this upgrade. Builders needing unbuffered or non-ECC DDR3 must choose a different module.

How it compares

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

Price $49.99
Cheaper than about 84% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $3.12 per GB
Cheaper than about 88% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number1R6D32R416 GB
Total capacity16 GB
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.5 V

Questions about this item

How much power does the 16GB DDR3 1600 ECC Registered RDIMM draw at its rated 1.5V during continuous server workloads?

The module operates at the standard DDR3 voltage of 1.5V. As a registered ECC DIMM, it includes a register that adds a small, constant overhead compared to unbuffered memory, but total power per stick remains within the JEDEC DDR3 limits for 16GB density.

What motherboard features are required to run this 2Rx4 240-pin DDR3 1600 RDIMM?

The system must provide DDR3 slots that accept 240-pin registered ECC modules, support 1.5V operation, and have a chipset or CPU memory controller qualified for registered DIMMs. Standard desktop boards that only take unbuffered memory will not work.

Can this 16GB 2Rx4 PC3-12800 CL11 RDIMM share channels with older 1Rx4 or 2Rx8 registered modules in the same server?

Mixing ranks per channel is often allowed by server memory controllers, but the platform's qualified vendor list decides. Population rules usually require identical rank structure per channel for best stability; check the system manual before combining different rank geometries.

More in ECC Server RAM

Similar items