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Eight green DDR4 RDIMM modules with gold contacts and black chips, no heat spreaders

OWC

OWC 128GB (8x16GB) DDR4 2400 CL17 ECC Registered RDIMM 288-pin 1.2V Cisco UCS B200 M4 C220 M4

SKU CH-EK02-9HAS5

A 128 GB kit of eight 16 GB DDR4 2400 CL17 ECC registered RDIMMs for Cisco UCS B200 M4 and C220 M4 servers

  • Capacity128GB (8 x 16GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 128GB (8 x 16GB)

  • 128GB capacity across 8 modules expands server memory headroom
  • DDR4 2400 CL17 at 1.2V delivers registered ECC reliability
  • 288-pin RDIMM form factor fits Cisco UCS B200 M4 and C220 M4
  • 1Rx4 organisation optimises signal integrity for dense configurations
  • Replaces Cisco part numbers UCSMR1X161RVA and UCSMR1X161RVG for direct compatibility

Server-grade memory kit

This 128GB kit contains eight 16GB DDR4 2400 CL17 ECC registered RDIMMs built for Cisco UCS B200 M4 and C220 M4 servers. Each module runs at 1.2V with a 1Rx4 organisation and no heat spreader. It is designed for workstation and server platforms that require registered ECC memory and will not work in standard desktop systems.

Sustained workload behaviour

Registered buffering and ECC correction keep data integrity stable during continuous multi-threaded tasks such as virtualisation, database serving or long render jobs. The CL17 latency at 2400MHz delivers predictable throughput without the error accumulation that can degrade unbuffered memory over extended periods. Modules are validated to JEDEC PC4-19200 specifications for reliable 24/7 operation.

Installation notes

Install all eight modules in matched channels according to the Cisco server memory population guide for the B200 M4 or C220 M4. Do not mix these registered DIMMs with unbuffered or load-reduced ECC memory, as the systems will not post. The 288-pin form factor fits only DDR4 registered slots; desktop DDR4 slots are physically incompatible and will not accept the modules.

Points forts

  • 128GB capacity across 8 modules expands server memory headroom
  • DDR4 2400 CL17 at 1.2V delivers registered ECC reliability
  • 288-pin RDIMM form factor fits Cisco UCS B200 M4 and C220 M4
  • 1Rx4 organisation optimises signal integrity for dense configurations
  • Replaces Cisco part numbers UCSMR1X161RVA and UCSMR1X161RVG for direct compatibility

Caractéristiques

BrandOWC
Part Number2R4D41R4128K
Capacity128GB (8 x 16GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B200 M4
Cisco UCS C220 M4

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Questions sur cet article

How much heat and power does the 128 GB DDR4 2400 kit draw when the server runs continuously?

Each 16 GB module operates at 1.2 V without a heat spreader; the registered ECC design keeps power draw low for 24/7 server workloads.

What must the Cisco UCS B200 M4 or C220 M4 already have for this 8-module kit to work?

The server needs free 288-pin DDR4 RDIMM slots that support registered ECC memory; mixing with unbuffered or load-reduced DIMMs is not supported.

Can I add this 1Rx4 CL17 kit alongside older Cisco UCS memory such as part numbers UCSMR1X161RVA or UCSMR1X161RVG?

Yes, the kit replaces those Cisco part numbers directly, so it will operate with matching registered ECC modules already installed in the same server.

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