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Eight black DDR5 UDIMM modules in a row

OWC

OWC 256GB (8x32GB) DDR5 4800 CL40 ECC UDIMM desktop RAM

SKU CH-SVKV-SW3T6

Eight 32GB DDR5 4800 CL40 ECC UDIMM modules provide 256GB at 1.1V for workstations, servers and NAS systems

  • Capacity256GB (8 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 256GB (8 x 32GB)

  • 256 GB total capacity from eight 32 GB modules
  • DDR5 4800 speed with CL40 latency for responsive throughput
  • ECC unbuffered design protects data integrity in critical workloads
  • 1 V operation reduces power draw and heat
  • 288-pin UDIMM form factor fits compatible workstation, server and NAS systems

256GB DDR5 ECC UDIMM kit

This OWC kit delivers 256GB of DDR5 memory across eight 32GB unbuffered UDIMMs. It runs at 4800 MT/s with CL40 latency and 1.1V operation. ECC support adds error correction for data integrity in workstations, servers and NAS systems. The modules use standard 288-pin DDR5 form factor without heat spreaders.

Suited for ECC platforms only

Systems that require ECC unbuffered DDR5 and accept 32GB dual-rank modules can use this kit. Platforms limited to non-ECC memory or registered DIMMs will not be compatible. Buyers needing lower capacities or higher speeds should evaluate other configurations. The eight-module layout fills eight DIMM slots.

4800 MT/s CL40 at 1.1V

The JEDEC-standard 4800 MT/s speed with CL40 timing at 1.1V is the decisive specification. Motherboards must support DDR5-4800 ECC unbuffered operation at this voltage. If the platform demands a different speed, latency or voltage, this kit will not function correctly.

Highlights

  • 256 GB total capacity from eight 32 GB modules
  • DDR5 4800 speed with CL40 latency for responsive throughput
  • ECC unbuffered design protects data integrity in critical workloads
  • 1 V operation reduces power draw and heat
  • 288-pin UDIMM form factor fits compatible workstation, server and NAS systems

Specifications

BrandOWC
Part Number4E8D52R8256K
Capacity256GB (8 x 32GB)
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

Other versions of this model

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Questions about this item

How can I confirm the 256GB kit is running at the rated DDR5 4800 CL40 speed after installation?

Open your system BIOS or UEFI and check the memory information screen; it should report 4800 MT/s with a CAS latency of 40. In Windows, Task Manager's Performance tab also shows the operating speed.

What does the 8 x 32GB kit include and is any extra hardware required?

The box contains eight 32 GB unbuffered ECC UDIMMs, giving 256 GB total. No additional cables, brackets or heat spreaders are needed; the modules install directly into standard 288-pin DDR5 slots.

Should I choose this 256GB kit or a smaller capacity for my workstation?

Select the 256 GB (8 × 32 GB) kit when your workload — such as virtualization, large datasets or heavy multitasking — benefits from maximum capacity. For lighter tasks a smaller kit may be sufficient.

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