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Green rectangular circuit board with gold edge connectors and black memory chips on both sides

OWC

OWC 16GB DDR4 2133MHz ECC Registered RDIMM 2Rx4 CL15 1.2V Server Memory

SKU CH-6TWX-8KD6D

16 GB DDR4 ECC registered RDIMM running at 2133 MHz with CL15 latency for servers and workstations

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • ECC registered design protects data integrity in servers
  • 16GB capacity at DDR4 2133MHz CL15 expands memory headroom
  • 2V low voltage reduces power draw per module
  • 288-pin RDIMM 2Rx4 fits Dell A7910488 A7945660 A7946645 SNP1R8CRC/16G
  • JEDEC and RoHS compliant for warranty-safe upgrades

Server-grade ECC RDIMM for Dell workstations

This OWC 16GB DDR4 module is built for servers, workstations and NAS systems that require registered ECC memory. It matches the specifications of Dell part numbers A7910488, A7945660, A7946645 and SNP1R8CRC/16G. The 288-pin RDIMM uses a 2Rx4 rank configuration and operates at 1.2V.

Registered ECC cannot mix with unbuffered memory

The registered buffer and ECC functionality make this module incompatible with standard desktop computers. It cannot be mixed with unbuffered memory in the same system. Buyers who need memory for a consumer desktop or laptop cannot use this part.

DDR4 2133MHz CL15 speed rating

The module runs at 2133MHz (PC4-17000) with a CAS latency of CL15. This speed rating determines whether the module matches the memory controller requirements of the target server or workstation platform.

How it compares

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

Price $110.99
Cheaper than about 65% 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 $6.94 per GB
Typical for this category: the median of 6,064 items is $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 number2R1D42R416 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Should I choose this 16GB DDR4-2133 ECC registered module or a lower-capacity stick?

This 16GB module provides a single-slot upgrade path; add multiple sticks to reach your server's maximum supported memory.

What does the PC4-17000 rating mean for actual throughput in my server?

PC4-17000 indicates a peak transfer rate of 17 GB/s at 2133 MHz, which the memory controller will use when all channels are populated.

Will the 288-pin DDR4 ECC registered interface work in my workstation?

The 288-pin RDIMM fits DDR4 server and workstation slots that support registered ECC; it will not work in standard desktop boards.

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