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Four black DDR5 UDIMM modules in a row

OWC

OWC 128GB (4x32GB) DDR5 4800 CL40 ECC Unbuffered UDIMM desktop RAM

SKU CH-N2MH-X7H18

128 GB kit of four 32 GB DDR5 4800 CL40 ECC unbuffered UDIMMs at 1.1 V for workstations and servers

  • Capacity128GB (4 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity from four 32 GB modules for heavy multitasking
  • DDR5 4800 speed with CL40 latency for responsive data handling
  • ECC unbuffered design detects and corrects single-bit errors automatically
  • 1 V operation reduces power draw and heat output
  • 288-pin UDIMM form factor fits standard desktop and workstation slots

128GB DDR5 ECC kit for workstations

This OWC kit delivers 128GB of DDR5 memory across four 32GB modules. It runs at 4800 MT/s with a CL40 latency and operates at 1.1V. The modules are unbuffered ECC UDIMMs built for select workstations, servers and NAS systems.

JEDEC-standard 288-pin unbuffered DIMMs

Each stick uses the standard 288-pin DDR5 form factor without a heat spreader. Unbuffered ECC circuitry provides error correction for data integrity in critical workloads. The black PCBs fit standard desktop DIMM slots and require no extra clearance for oversized coolers.

Verify DDR5 ECC UDIMM support before ordering

Confirm your platform accepts DDR5 unbuffered ECC UDIMMs at 4800 MT/s and 1.1V. Check that the motherboard or workstation manual lists support for 2Rx8 32GB modules and a four-module population. Ensure the BIOS is current for full compatibility.

Highlights

  • 128 GB total capacity from four 32 GB modules for heavy multitasking
  • DDR5 4800 speed with CL40 latency for responsive data handling
  • ECC unbuffered design detects and corrects single-bit errors automatically
  • 1 V operation reduces power draw and heat output
  • 288-pin UDIMM form factor fits standard desktop and workstation slots

Specifications

BrandOWC
Part Number4E8D52R8128S
Capacity128GB (4 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

Will this kit run at 4800 MHz on a board that only supports 4800?

Yes, the modules are rated DDR5 4800 (PC5-38400) and will operate at that speed on any compatible motherboard.

Do I need a CPU and chipset that support ECC unbuffered memory?

Yes, ECC unbuffered DIMMs require a platform that explicitly enables ECC; standard consumer desktop chipsets usually do not.

Can I install the four 32 GB sticks in a dual-channel workstation?

The kit contains four 32 GB modules for 128 GB total; populate all four slots on a dual-channel board to run in dual-channel mode.

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