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Eight black DDR4 UDIMM sticks in a row

OWC

OWC 256GB (8x32GB) DDR4 2666MHz CL19 ECC Unbuffered UDIMM 1.2V 288-pin desktop RAM

SKU CH-NDYT-4RT4Y

Eight 32 GB DDR4 2666 MHz CL19 ECC unbuffered UDIMMs at 1.2 V for workstation, server or NAS upgrades

  • Capacity256GB (8 x 32GB)
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 256GB (8 x 32GB)

  • 256GB total capacity across eight 32GB modules for heavy multitasking
  • ECC protection detects and corrects single-bit errors to safeguard data integrity
  • DDR4 2666MHz CL19 speed delivers responsive performance for workstation workloads
  • 2V low-voltage operation reduces power draw and heat output
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

256GB DDR4 ECC kit for workstations and servers

This kit provides 256GB of DDR4 memory across eight 32GB unbuffered UDIMMs. It is built for workstations, servers and NAS systems that require error-correcting code protection. The modules run at 2666MHz with a CL19 latency and operate at 1.2V. They are fully compliant with JEDEC specifications.

Capacity headroom at 256GB across eight modules

Eight 32GB modules give 256GB total capacity for large datasets, virtualisation and heavy multitasking. The kit runs natively at 2666MHz and is backward compatible with 2133MHz and 2400MHz platforms. ECC functionality detects and corrects single-bit errors to maintain data integrity under sustained load. Unbuffered design keeps latency low for responsive performance.

Thermals and power draw at 1.2V without spreaders

Modules operate at the standard 1.2V DDR4 voltage without heat spreaders, relying on case airflow for cooling. Power draw scales with the eight-module population and 2666MHz frequency. The unbuffered design avoids the extra power of registered DIMMs. JEDEC compliance ensures stable operation within normal thermal limits.

Points forts

  • 256GB total capacity across eight 32GB modules for heavy multitasking
  • ECC protection detects and corrects single-bit errors to safeguard data integrity
  • DDR4 2666MHz CL19 speed delivers responsive performance for workstation workloads
  • 2V low-voltage operation reduces power draw and heat output
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

Caractéristiques

BrandOWC
Part Number2E6D42R8256K
Capacity256GB (8 x 32GB)
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

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Questions sur cet article

Will this 256 GB kit run in a standard desktop motherboard with four DDR4 slots?

The kit contains eight 32 GB modules, so a board with only four slots cannot accept all of them at once; you need a platform that provides eight DDR4 DIMM sockets.

Does the memory require a CPU or chipset that supports ECC?

Yes, ECC operation only functions when the processor and motherboard both support error-correcting code; otherwise the modules will run as non-ECC memory.

Can I mix these 2666 MHz CL19 sticks with existing 2400 MHz modules?

The kit is backward compatible with 2133 MHz and 2400 MHz speeds, so the system will simply run all modules at the lowest common frequency and latency.

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