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Green circuit board with gold edge connector and black memory chips, no heat spreader

OWC

OWC 128GB DDR4 2666 PC4-21300 CL19 8Rx4 288-pin 1.2V ECC LRDIMM server RAM

SKU CH-TBC6-R4NWS

Single 128GB DDR4 2666 ECC load-reduced DIMM for servers, workstations and NAS systems

  • Capacity128GB
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS Latency19
  • Voltage1.2V
  • ECCYes
  • 128 GB single-module capacity simplifies high-density server upgrades
  • ECC load-reduced design maintains data integrity under heavy workloads
  • DDR4 2666 CL19 at 1.2 V balances speed with low power draw
  • 288-pin LRDIMM form factor fits standard server and workstation slots
  • Backward compatible with 2133 and 2400 MHz systems for flexible deployment

128GB DDR4 ECC LRDIMM for servers

This 128GB DDR4 2666 PC4-21300 CL19 8Rx4 288-pin 1.2V ECC Load Reduced DIMM is built for workstations, servers and NAS systems that require registered memory. It replaces Crucial CT128G4ZFE426S and CT128G4ZFJ426S modules. The single-module design delivers 128GB capacity in one slot. JEDEC and ROHS compliance ensures a warranty-safe upgrade for supported platforms.

Load Reduced ECC is the deciding factor

The module uses Load Reduced ECC technology, which is electrically different from standard unbuffered or registered ECC DIMMs. It cannot be mixed with either type in the same system. The 8Rx4 rank configuration and 1.2V operation follow the DDR4 2666 specification. Backward compatibility with 2133MHz and 2400MHz speeds allows use in slower memory buses without configuration changes.

Suits servers needing maximum density per slot.

This memory suits administrators upgrading older DDR4 server platforms to higher capacity or building new systems that support Load Reduced DIMMs. It will not work in standard desktop computers or consumer motherboards that accept only unbuffered memory. Builders who need unbuffered or registered ECC modules should look at other memory types.

Points forts

  • 128 GB single-module capacity simplifies high-density server upgrades
  • ECC load-reduced design maintains data integrity under heavy workloads
  • DDR4 2666 CL19 at 1.2 V balances speed with low power draw
  • 288-pin LRDIMM form factor fits standard server and workstation slots
  • Backward compatible with 2133 and 2400 MHz systems for flexible deployment

Caractéristiques

BrandOWC
Part Number2L6D48R4128G
Capacity128GB
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2666 (PC4 21300)
CAS Latency19
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank8Rx4
Heat SpreaderNo

Questions sur cet article

What does the 128GB capacity mean once this module is installed in a server?

A single 128GB LRDIMM adds a full 128GB of ECC memory to one slot, letting the system address larger datasets without adding more modules.

How does the PC4-21300 2666MHz rating and CL19 latency cap real-world throughput?

The module runs at up to 2666 MT/s with CAS 19 timing; actual bandwidth is limited by the server memory controller and the slowest module in the channel.

What physical slot and clearance does the 288-pin LRDIMM need to fit?

It requires a standard DDR4 288-pin DIMM socket and fits the usual server DIMM height since it has no heat spreader.

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