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Two bare green DDR5 RDIMM sticks, 288-pin, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 4Rx4 ECC RDIMM ThinkMate 740RTP7 memory upgrade

SKU CH-FYK3-688PV

Adds 256 GB of DDR5 ECC registered memory to the ThinkMate 740RTP7 workstation

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB kit expands workstation capacity for heavy workloads
  • DDR5 4800 speed feeds data to CPU at PC5-38400 bandwidth
  • ECC registered design detects and corrects memory errors automatically
  • 4Rx4 organisation packs 128 GB per 288-pin module efficiently
  • 1 V operation keeps power draw low in dense configurations

Compatible ThinkMate 740RTP7 DDR5 upgrade

This 256 GB DDR5 4800 kit contains two 128 GB registered ECC RDIMMs built for the ThinkMate GPX-WS-740RTP7 workstation. Each module runs at 1.1 V with CL40 latency and uses a 4Rx4 organisation. The memory targets IT teams who need maximum capacity in a validated configuration.

Check motherboard slots and CPU support

Verify that the workstation has enough free 288-pin DDR5 RDIMM slots for two modules and that the installed processor supports registered ECC memory at this density. Confirm the system BIOS recognises 4Rx4 modules before ordering. The kit is qualified only for the listed ThinkMate model.

Kit delivers matched pair for dual-channel operation

The two modules are packaged together as a tested pair so they initialise in dual-channel mode without manual matching. No heat spreader is included, relying on server chassis airflow for cooling. The registered buffer and on-die ECC maintain data integrity under sustained enterprise workloads.

How it compares

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

Price $8,044.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $31.43 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineTHINKMATE Server/Workstation Compatible Series Memory
Model nameTHINKMATE DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K2
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the NEMIX RAM 256GB DDR5 4800 kit include both 128GB modules or must they be purchased separately?

The kit contains two 128GB modules for a total of 256GB; nothing else is required to reach the rated capacity.

Why choose the CL40 4Rx4 registered ECC version instead of a lower-latency or unbuffered alternative?

CL40 at 4800 MT/s with 4Rx4 registered ECC is the specification validated for the ThinkMate 740RTP7 workstation, ensuring stability under sustained server workloads.

What does the PC5-38400 rating mean for actual throughput in the ThinkMate 740RTP7?

PC5-38400 denotes a peak data rate of 38400 MB/s per module, delivering high-bandwidth ECC-protected memory performance for the workstation.

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