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Four green DDR4 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR4 3200 ECC RDIMM CL22 1.2V 288-pin THINKMATE VSX-R5-540W3 memory upgrade

SKU CH-1WG5-MED5E

256GB DDR4 ECC registered server memory kit with four 64GB modules at 3200MHz CL22 1.2V for ThinkMate workstations

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 256 GB total capacity with four 64 GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • ECC registered RDIMM for data-integrity protection
  • 2 V operating voltage for efficient power draw
  • 288-pin form factor fits compatible ThinkMate workstations

256 GB DDR4 3200 ECC RDIMM Kit

This kit provides 256 GB of DDR4 3200 registered ECC memory in four 64 GB modules. It operates at 1.2 V with CL22 latency and uses a 288-pin RDIMM form factor. The modules are validated for the Thinkmate VSX-R5-540W3 workstation.

Suited for Thinkmate VSX-R5-540W3 upgrades.

The registered ECC design targets the Thinkmate VSX-R5-540W3 workstation where error correction and signal buffering are required. Systems that accept only unbuffered non-ECC DIMMs cannot use this kit. Buyers needing consumer desktop memory should look elsewhere.

256 GB total capacity with four 64 GB ranks

Four 64 GB 4Rx4 modules deliver 256 GB of addressable memory for large datasets and virtualization workloads. The 3200 MT/s rate and CL22 timing provide steady throughput within the platform's qualified speed. Workloads exceeding 256 GB will require a platform that supports higher density modules.

How it compares

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

Price $1,925.99
Pricier than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $7.52 per GB
Cheaper than about 54% 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 DDR4 3200 MHz ECC RDIMM Registered Server Memory
Part numberMR25600-944K4
Total capacity256 GB (4 × 64 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 items256 GB (4 × 64 GB) DDR4 3200 MHz PC4-25600 4Rx4 1.2 V CL22 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

My workstation has four DDR4 RDIMM slots — can I install this 4 x 64 GB kit alongside the existing modules?

This kit fills all four slots with 64 GB registered ECC modules, so any memory already installed must be removed before adding the 256 GB set.

The server currently runs DDR4 3200 registered ECC memory — will the new CL22 4Rx4 modules operate at the same speed and timing?

Each module is rated DDR4 3200 PC4-25600 CL22 1.20 V, matching the speed and voltage of your existing 3200 registered ECC DIMMs.

After seating the four 288-pin RDIMMs, how can I confirm the system recognises the full 256 GB at 3200 MT/s with ECC active?

Check the BIOS memory summary or run a hardware inventory tool; it should show 256 GB total, 3200 MT/s data rate, and ECC enabled for each 64 GB module.

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