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Four green DDR5 ECC RDIMM modules in anti-static tray

OWC

OWC 128GB (4x32GB) DDR5 4800 CL40 ECC Registered RDIMM memory upgrade

SKU CH-J3JW-FX01G

A 128GB kit of four 32GB DDR5 4800 CL40 ECC registered RDIMMs for Dell Precision 5860 and 7960 workstations

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB (4 x 32GB)

  • 128 GB capacity across four 32 GB modules expands workstation memory headroom
  • DDR5 4800 speed with CL40 latency delivers high-throughput data access
  • ECC registered design detects and corrects single-bit errors for data integrity
  • 1 V operation reduces power draw while maintaining JEDEC-standard compliance
  • Validated for Dell Precision 5860, 5860XL, 7960, 7960XL towers and 7960 rack systems

128GB DDR5 4800 ECC RDIMM kit

This 128GB kit contains four 32GB DDR5 4800 CL40 registered ECC modules built to JEDEC PC5-38400 standard at 1.1V. It targets Dell Precision 5860 and 7960 workstation owners who need maximum capacity with error-correcting registered memory.

Upgrading from lower-capacity DDR5 RDIMM

The kit replaces smaller DDR5 registered ECC sets when workloads exceed current capacity or when mixed-rank configurations cause instability. The jump is worth it only if the workstation board supports 2Rx8 registered DIMMs and the user cannot mix these with unbuffered or load-reduced modules.

Tool-free DIMM installation

Modules slot into the 288-pin DDR5 sockets without cables or software; the workstation firmware detects the registered ECC type automatically. The most common issue is installing these in a consumer desktop or mixing them with unbuffered memory, both of which prevent the system from posting.

Points forts

  • 128 GB capacity across four 32 GB modules expands workstation memory headroom
  • DDR5 4800 speed with CL40 latency delivers high-throughput data access
  • ECC registered design detects and corrects single-bit errors for data integrity
  • 1 V operation reduces power draw while maintaining JEDEC-standard compliance
  • Validated for Dell Precision 5860, 5860XL, 7960, 7960XL towers and 7960 rack systems

Caractéristiques

BrandOWC
Part Number4R8D52R8128S
Capacity128GB (4 x 32GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemDell Precision Workstation 5860 Tower
Dell Precision Workstation 5860XL Tower
Dell Precision Workstation 7960 Rack
Dell Precision Workstation 7960 Tower
Dell Precision Workstation 7960XL Tower

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Questions sur cet article

What form factor and pin count do the modules use for the Dell Precision 5860 and 7960 workstations?

Each module is a 288-pin DDR5 ECC Registered RDIMM, the standard form factor for the listed Dell Precision towers and rack.

Which slot population order does the Dell Precision 5860 and 7960 documentation require for a four-module kit?

Populate the four DIMM slots in the sequence shown in the system service manual — typically slots 1, 3, 2, 4 — so the memory controller trains all channels correctly.

When should the registered ECC RDIMMs be replaced if ECC correctable-error counts start rising?

Monitor the IPMI or iDRAC logs; when correctable-error thresholds are exceeded, schedule replacement of the affected 32 GB module to avoid uncorrectable failures.

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