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Eight green DDR4 RDIMM modules, 288-pin, no heat spreader

OWC

OWC 512GB (8x64GB) DDR4 2666 ECC Registered RDIMM server RAM

SKU CH-JVEG-8T9BF

Eight 64 GB DDR4 2666 ECC registered RDIMMs totalling 512 GB for servers and compatible NAS systems

  • Capacity512GB (8 x 64GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 512GB (8 x 64GB)

  • 512GB total capacity from eight 64GB modules for maximum server memory
  • ECC Registered RDIMM with CL19 latency ensures data integrity in critical workloads
  • DDR4 2666MHz PC4-21300 speed with backward compatibility to 2133MHz and 2400MHz
  • 2V JEDEC-standard voltage reduces power draw in dense configurations
  • 2Rx4 288-pin dual-channel kit designed for Synology SA6400 and compatible NAS systems

Target System and Capacity

This kit provides 512GB of DDR4 ECC registered memory across eight 64GB modules. It is built for servers, workstations and compatible NAS appliances that require registered DIMMs. Standard desktop platforms cannot use this memory type.

Sustained Operation Characteristics

Registered buffering and ECC correction maintain data integrity during continuous workloads. The modules run at 2666MHz with CL19 timing and 1.2V, and they are backward compatible with 2133MHz and 2400MHz bus speeds. JEDEC compliance ensures stable operation under prolonged load.

Installation Notes

Each 288-pin RDIMM installs like any DIMM, but the platform must support registered ECC memory. Mixing with unbuffered or load-reduced modules will prevent boot. Verify the system accepts 2Rx4 64GB density before installation.

Points forts

  • 512GB total capacity from eight 64GB modules for maximum server memory
  • ECC Registered RDIMM with CL19 latency ensures data integrity in critical workloads
  • DDR4 2666MHz PC4-21300 speed with backward compatibility to 2133MHz and 2400MHz
  • 2V JEDEC-standard voltage reduces power draw in dense configurations
  • 2Rx4 288-pin dual-channel kit designed for Synology SA6400 and compatible NAS systems

Caractéristiques

BrandOWC
Part Number2R6D42R4512K
Capacity512GB (8 x 64GB)
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Questions sur cet article

How much power does the 1.2V DDR4 2666 kit draw when the server runs continuously?

Each 64 GB module operates at 1.2 V, the standard DDR4 voltage, so the eight-module kit stays within normal registered-DIMM power limits for 24/7 server workloads.

What must the Synology SA6400 already have to accept this 8×64 GB registered ECC kit?

The NAS needs free 288-pin DDR4 RDIMM slots that support registered ECC memory; the kit will not work in unbuffered or consumer boards.

Will these CL19 2666 MHz modules run stably beside existing 2133 MHz or 2400 MHz sticks in the same chassis?

Yes, the modules are backward-compatible with 2133 MHz and 2400 MHz speeds, so they will down-clock automatically to match slower installed DIMMs.

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