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Two green DDR5 RDIMMs with black heat spreaders and gold contacts

NEMIX RAM

NEMIX RAM 256GB (2 x 128GB) DDR5 4800MHz PC5-38400 2Rx4 1.1V 288-PIN ECC RDIMM server RAM

SKU CH-WEN2-YPS30

A 256 GB DDR5 server memory kit in two 128 GB registered ECC modules running at 4800 MHz with CAS 40 latency and 1.1 V operation

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB total capacity across two 128 GB modules for large server workloads
  • DDR5 4800 MT/s speed rated at PC5-38400 for high-throughput data processing
  • ECC registered design detects and corrects memory errors to protect data integrity
  • Low 1.1 V operating voltage reduces power draw in dense rack deployments
  • Built with major OEM Samsung, Micron or Hynix DRAM chips for consistent reliability

Server-grade DDR5 capacity

This 256 GB kit delivers two 128 GB registered DIMMs running at DDR5 4800 with a CAS latency of 40. It is built for servers that require ECC error correction and registered buffering to maintain data integrity under sustained workloads. The modules operate at 1.1 V and use a 2Rx4 organisation with major OEM DRAM chips.

Fits DDR5 RDIMM slots only

The 288-pin registered form factor requires a motherboard with DDR5 RDIMM slots and a platform that supports registered memory and ECC. Standard desktop boards that accept only unbuffered DIMMs cannot use this kit. Each module occupies a single DIMM slot, leaving remaining slots free for further capacity expansion.

No bundled software or accessories

The package contains only the two memory modules; there are no cables, adapters or management utilities included. Configuration is handled entirely through the server BIOS or firmware, so no extra software installation is required. Buyers needing mounting hardware or diagnostic tools must source them separately.

How it compares

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

Price $7,732.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
CAS latency 40
Typical for this category: the median of 439 items is 40.
Price per GB $30.21 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Model namePart#: MR38400-724K2-SM-AS-1115S-FWTRT
Part numberPart#: MR38400-724K2-SM-AS-1115S-FWTRT
Total capacity256 GB (2 × 128 GB)
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.1 V

Questions about this item

How does the 1.1V operating voltage affect sustained thermal output?

The low 1.1V voltage reduces power draw per module, helping to limit heat generation during continuous server workloads.

What is the typical thermal behaviour under all-day load?

Registered DDR5 modules at 1.1V generally run cooler than higher-voltage alternatives, supporting stable 24/7 operation in airflow-managed chassis.

Which motherboard features are required for this kit to function?

A server platform with DDR5 RDIMM slots supporting ECC and registered memory topology is required for this 256GB kit to operate.

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