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A green printed circuit board with gold edge connectors and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB DDR4 3200 4Rx4 ECC RDIMM ThinkMate RAX-XN24 XS4 XT10 XS8 XH8 XH10 XH12 XT24 S3 memory upgrade

SKU CH-X4S7-0YG1Q

Adds 64GB DDR4 3200 ECC registered memory to compatible ThinkMate rackmount servers for data-integrity workloads

  • Total capacity64 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 64 GB capacity expands server memory headroom for heavy workloads
  • DDR4 3200 speed delivers high bandwidth for data-intensive applications
  • ECC registered design corrects errors to protect critical data integrity
  • 2 V operation reduces power draw in dense rack environments
  • Validated for ThinkMate RAX XN24 XS4 XT10 XS8 XH8 XH10 XH12 XT24 S3 systems

Server memory upgrade

This 64GB DDR4 3200 module adds registered ECC capacity to ThinkMate rackmount servers including the RAX-XN24, XS4, XT10, XS8, XH8, XH10, XH12, XT24 and S3. It runs at 1.2V with CL22 latency and uses a 4Rx4 organisation across 288 pins. The stick is built with major OEM chips and validated for mission-critical workloads.

Build integration

The RDIMM format fits standard DDR4 server DIMM slots and the registered buffer reduces electrical load on the memory controller, allowing higher total capacities per channel. ECC protection corrects single-bit errors to maintain data integrity under sustained load. No heat spreader is fitted, so airflow across the module is unimpeded in dense chassis.

Replacement context

This module replaces lower-capacity or non-ECC DDR4 RDIMMs when the platform requires registered memory and 64GB per slot. The jump is worth it when the workload exceeds the current memory ceiling or when error correction becomes a requirement for stability. It does not suit systems that accept only unbuffered UDIMMs or that are limited to speeds below 3200 MT/s.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $414.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.48 per GB
Cheaper than about 61% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineTHINKMATE Server/Workstation Compatible Series Memory
Model nameTHINKMATE DDR4 3200 MHz ECC RDIMM Registered Server Memory
Part numberMR25600-944K1
Total capacity64 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items64 GB (1 × 64 GB) DDR4 3200 MHz PC4-25600 4Rx4 1.2 V CL22 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How does the 4Rx4 rank layout affect maximum memory capacity on the ThinkMate RAX-XN24?

Each 64 GB module uses a 4Rx4 organisation, so the server’s DIMM slots reach the platform’s rank limit with fewer modules than lower-rank parts.

What thermal load should I expect from the 1.20 V registered DIMMs during continuous operation?

The modules run at 1.20 V without a heat spreader; registered buffering moves some power to the register, but total draw stays within standard DDR4 RDIMM limits for rackmount airflow.

Which existing memory population rules must the ThinkMate XS4 follow to accept this 288-pin RDIMM?

The system requires registered ECC DDR4 RDIMMs; mixing unbuffered or non-ECC DIMMs is not supported, so all populated slots must match this 288-pin registered specification.

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