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Green rectangular DDR5 memory module with gold contacts and black chips, no heat spreader

OWC

OWC 128GB DDR5 4800 CL40 4Rx4 ECC Registered RDIMM 1.1V 288-pin memory upgrade

SKU CH-EV3Z-H7EZQ

A 128GB DDR5 4800 CL40 ECC registered RDIMM for compatible Gigabyte workstation and server systems

  • Capacity128GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS Latency40
  • Voltage1.1V
  • ECCYes

Capacity 128GB

  • 128 GB single-module capacity for high-density server upgrades
  • DDR5 4800 PC5-38400 CL40 speed for data-centre workloads
  • ECC registered 4Rx4 design protects data integrity in workstations
  • 1 V operation reduces power draw in multi-DIMM configurations
  • Validated for Gigabyte TO25-Z12 W753-W50 W773-W80 P163-P32 R183-P92 systems

System-specific 128GB DDR5 ECC module

This 128GB DDR5 4800 CL40 4Rx4 ECC registered RDIMM is built for Gigabyte TO25-Z12, W753-W50, W773-W80, P163-P32 and R183-P92 workstations and servers. It delivers a single-module capacity upgrade where registered memory is required.

JEDEC DDR5 4800 registered constraints

The module operates at 1.1V with CL40 latency and a 4Rx4 organisation. Registered ECC memory cannot be mixed with unbuffered or load-reduced DIMMs, and it will not function in standard desktop platforms that lack registered-memory support.

Replaces smaller registered DIMMs

It upgrades from lower-capacity registered modules when the platform qualifies the 128GB 4Rx4 density. The jump is worthwhile for workloads that need maximum memory per slot and ECC integrity, but it is not for systems that require unbuffered memory or mixed-rank configurations.

Ciri-ciri utama

  • 128 GB single-module capacity for high-density server upgrades
  • DDR5 4800 PC5-38400 CL40 speed for data-centre workloads
  • ECC registered 4Rx4 design protects data integrity in workstations
  • 1 V operation reduces power draw in multi-DIMM configurations
  • Validated for Gigabyte TO25-Z12 W753-W50 W773-W80 P163-P32 R183-P92 systems

Spesifikasi

BrandOWC
Part Number4R8D54R4128G
Capacity128GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS Latency40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemGigabyte TO25-Z12
Gigabyte W753-W50
Gigabyte W773-W80
Gigabyte P163-P32
Gigabyte R183-P92

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Is this single 128GB module the right choice for my Gigabyte W753-W50, or do I need smaller sticks?

The module is a single 128GB DDR5 4800 CL40 4Rx4 ECC Registered RDIMM validated for the Gigabyte W753-W50, so one stick delivers the full capacity if your board has a free 288-pin slot.

What does the 4800 MT/s rating actually deliver once installed in my Gigabyte TO25-Z12?

In the Gigabyte TO25-Z12 the module runs at the JEDEC-standard 4800 MT/s with CL40 latency at 1.1V, giving you the rated PC5-38400 bandwidth without manual tuning.

Does the 288-pin DDR5 ECC Registered interface limit what chipsets or CPU generations I can use this with?

The 288-pin DDR5 ECC Registered form factor only fits motherboards wired for DDR5 RDIMMs such as the listed Gigabyte W773-W80, P163-P32 and R183-P92; it will not work in desktop UDIMM slots.

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