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Four green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM MR38400-618K4 64GB (4x16GB) DDR5 4800 ECC RDIMM

SKU CH-XKYH-RA8CS

A 64 GB quad-channel DDR5 ECC RDIMM kit running at 4800 MT/s with CL40 latency and 1.1 V operation

  • Capacity64GB (4 x 16GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 64GB 4X16GB

Show 3 more configurations
  • 64 GB total capacity for memory-intensive server workloads
  • DDR5 4800 speed delivers high bandwidth for data-heavy tasks
  • ECC registered design detects and corrects errors for reliability
  • 1 V operation reduces power draw in dense configurations
  • Validated for ASRock WRX90 WS EVO motherboard compatibility

Targeted Server Memory Kit

This NEMIX RAM kit provides 64GB of DDR5 memory in a matched set of four 16GB modules. It is built for ASRock WRX90 WS EVO motherboards that require registered ECC DIMMs. System integrators and IT professionals handling mission-critical workloads will find the specification aligned with enterprise stability requirements. The registered design and error-correcting code suit multi-socket server boards rather than consumer desktops.

Build Integration Requirements

Each module uses a 288-pin DDR5 RDIMM form factor and operates at 1.10V with a CL40 latency. The registered buffer reduces electrical load on the memory controller, freeing the platform to populate all slots without signal degradation. Installation follows standard server DIMM procedures; the kit assumes the motherboard firmware supports the stated speed and rank configuration. Buyers needing unbuffered or non-ECC memory for consumer platforms cannot use this product.

Sustained Load Behaviour

Modules are stress-tested under load before shipping to verify reliability during continuous operation. The 1Rx8 organisation and Samsung, Micron or Hynix chipsets deliver consistent throughput at the rated 4800MT/s data rate. Error-correcting code detects and corrects single-bit errors in real time, preserving data integrity during long compute runs. Systems without registered ECC support will not benefit from these protection mechanisms.

Highlights

  • 64 GB total capacity for memory-intensive server workloads
  • DDR5 4800 speed delivers high bandwidth for data-heavy tasks
  • ECC registered design detects and corrects errors for reliability
  • 1 V operation reduces power draw in dense configurations
  • Validated for ASRock WRX90 WS EVO motherboard compatibility

Specifications

BrandNEMIX RAM
SeriesASRock Server Motherboard Compatible Series Memory
ModelASRock DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-618K4
Capacity64GB (4 x 16GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemASRock
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank1Rx8
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content64GB (4X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

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Questions about this item

Does the CL40 latency become the bottleneck during sustained server workloads?

CL40 is the rated CAS latency for this DDR5-4800 kit; under continuous load the latency figure itself does not change, so the limit you hit first will be the 4800 MT/s transfer rate rather than the timing.

How much heat and power does the 1.10 V registered kit produce when running all day?

Each 16 GB module operates at 1.10 V without a heat spreader; registered DDR5 at this voltage typically draws only a few watts per DIMM and runs cool enough for standard server airflow.

What motherboard features must already be present for this 288-pin RDIMM kit to work?

The board needs DDR5 RDIMM slots, registered ECC support, and validation for 4800 MT/s operation — the ASRock WRX90 WS EVO is the platform this kit is built for.

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