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Green 288-pin DDR4 RDIMM module with black chips, no heat spreader

OWC

OWC 16GB DDR4 2933MHz ECC Registered RDIMM 2Rx8 CL21 1.2V 288pin Server memory upgrade

SKU CH-6S2C-N8BX8

16GB DDR4 ECC registered RDIMM at 2933MHz CL21 for Supermicro X11 server motherboards

  • Total capacity16 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx8

Capacity 16GB

  • ECC registered design prevents data corruption in critical workloads
  • 2933 MHz DDR4 speed with CL21 latency supports responsive server performance
  • 2 V operation reduces power draw for dense configurations
  • Validated for Supermicro X11DAC, X11DAi-N, X11DDW-L, X11DDW-NT and X11DGO-T
  • Backward compatible with 2133, 2400 and 2666 MHz systems

Targeted Server Upgrade

This 16GB DDR4 2933MHz ECC Registered RDIMM is built for Supermicro motherboards including the X11DAC, X11DAi-N, X11DDW-L, X11DDW-NT and X11DGO-T. It delivers 16GB of error-correcting, registered memory at 1.2V with CL21 latency. The module fits 288-pin DDR4 slots in compatible workstations, servers and NAS systems. It will not work in standard desktop computers or alongside unbuffered memory.

Replaces Specific Supermicro Parts

This module directly replaces Supermicro part numbers MEMDR416LCL01ER29, MEMDR416LCL03ER29, MEM-DR416LD-ER29, MEMDR416LHL04ER29 and MEMDR416LHL05ER29. The upgrade is worth it when existing registered ECC memory has failed or when expanding capacity within the motherboard's supported limits. It also runs at 2133MHz, 2400MHz and 2666MHz for backward compatibility with slower memory configurations. Do not mix with unbuffered DIMMs.

Capacity and Headroom

The single 16GB rank configuration provides 16GB of addressable memory per module, using a 2Rx8 organisation. It comfortably handles multi-threaded server workloads, virtualization and large file caches within the platform's maximum memory ceiling. Headroom ends when all DIMM slots are populated or the motherboard's total capacity limit is reached. Buyers needing more than 16GB per slot or higher frequencies must choose different modules.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $108.99
Cheaper than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.81 per GB
Cheaper than about 58% of the 20,941 comparable items (median $8.19 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 number2R9D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro Motherboard X11DAC
Supermicro Motherboard X11DAi-N
Supermicro Motherboard X11DDW-L
Supermicro Motherboard X11DDW-NT
Supermicro Motherboard X11DGO-T

Other versions of this model

5 more in the same range

Questions about this item

Will the 288-pin DDR4 RDIMM fit my Supermicro X11DAC motherboard?

Yes, the module is a 288-pin DDR4 ECC Registered DIMM validated for the X11DAC, X11DAi-N, X11DDW-L, X11DDW-NT and X11DGO-T boards.

How do I install the 16GB CL21 ECC Registered module correctly?

Power off the server, open the chassis, align the notch on the 288-pin edge connector with the slot key, press firmly until both retention clips click, then power on and verify 2933 MHz operation in BIOS.

When will the 1.2V 2Rx8 RDIMM need replacement?

The memory is rated for continuous server workloads at 1.2V; replace only if ECC correctable errors rise sharply or the module fails POST, otherwise it runs for the system's service life.

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