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Green 288-pin DDR4 ECC LRDIMM module with black chips, no heat spreader

OWC

OWC 128GB DDR4 2400 CL17 8Rx4 288-pin 1.2V ECC LRDIMM server RAM

SKU CH-62CX-RHKXN

128 GB DDR4-2400 ECC load-reduced DIMM for Fujitsu-compatible servers and workstations

  • Total capacity128 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank8Rx4
  • 128 GB capacity supports large workloads
  • ECC load-reduced design protects data integrity
  • DDR4 2400 speed with CL17 latency
  • 2 V operation reduces power draw
  • Compatible with Fujitsu S26361-F3935 part numbers

128GB DDR4 ECC LRDIMM for servers

This 128GB DDR4 2400 CL17 module is built for servers, workstations and NAS systems that require ECC load-reduced memory. It operates at 1.2V using a 288-pin form factor with an 8Rx4 rank configuration. The module is designed for environments where data integrity and high capacity per slot are essential.

Fits DDR4 ECC LRDIMM slots only

The module installs in 288-pin DDR4 slots that support load-reduced ECC DIMMs. It cannot be mixed with unbuffered or standard registered ECC memory. Backward compatibility with 2133MHz systems allows deployment in older platforms without configuration changes. No heat spreader is fitted, so airflow across the DIMM rows must be adequate.

Replaces Fujitsu S26361-F3935 series modules

This unit replaces Fujitsu part numbers ending in L517, L617, E617 and E517. The jump is worthwhile when a server needs the maximum 128GB per DIMM to reduce slot count or when existing modules have failed. It is not for desktop PCs, consumer laptops or any system that does not explicitly support DDR4 ECC load-reduced memory.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $678.99
Pricier than about 75% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $5.30 per GB
Cheaper than about 71% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number2L4D48R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeLoad Reduced
Memory rank8Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Does the 128GB module hit any thermal throttle point during sustained server workloads?

The module has no heat spreader and runs at 1.2V, so sustained throughput is limited by the platform's airflow and DIMM-slot cooling rather than an on-module throttle.

How much power and noise does the 8Rx4 LRDIMM add when the system runs 24/7?

At 1.2V the module draws roughly 10–12 watts; it adds no moving parts, so any extra noise comes only from chassis fans reacting to the added heat load.

What must the motherboard already support for this 288-pin ECC LRDIMM to function?

The board needs DDR4 slots wired for load-reduced ECC, a memory controller that accepts 8Rx4 ranks, and BIOS/firmware that enables PC4-19200 (or 2133 MHz fallback) operation.

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