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Eight green DDR4 LRDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR4 3200 PC4-25600 CL22 288-Pin ECC LRDIMM memory upgrade

SKU CH-B8J9-9PR5Z

Eight 64 GB DDR4 3200 ECC LRDIMM modules totalling 512 GB for ASRock Rack ROMED8-2T EPYC servers

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V

Capacity 512GB 8X64GB

  • 512 GB total capacity from eight 64 GB modules for high-density server workloads
  • DDR4 3200 speed with PC4-25600 bandwidth keeps data flowing in multi-threaded tasks
  • ECC LRDIMM load-reduced design improves signal integrity on heavily populated memory channels
  • 4Rx4 organisation and CL22 latency balance throughput and response time for EPYC platforms
  • 2 V operation reduces power draw across all eight modules in 288-pin form factor

Capacity and form factor

This kit delivers 512GB of DDR4 memory across eight 64GB LRDIMM modules. Each module uses a 288-pin interface and operates at 1.2V with CL22 latency. It is built for servers and workstations that require high-density registered memory with error correction.

Sustained-load behaviour

Load Reduced architecture lowers electrical loading on the memory bus so all eight ranks per module remain stable during extended workloads. ECC circuitry detects and corrects single-bit errors without halting the system. The 3200 MT/s data rate and PC4-25600 bandwidth support continuous throughput in virtualization and database tasks.

Compatibility checks

Verify that your motherboard accepts 4Rx4 LRDIMM modules and supports the full 512GB capacity across eight slots. Confirm the platform runs DDR4 at 3200 MT/s with 1.2V operation and provides ECC functionality. Ensure the BIOS recognises the module part number ML25600-944K8 for proper training.

How it compares

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

Price $3,681.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $7.19 per GB
Cheaper than about 56% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 3200 MHz ECC LRDIMM Load Reduced Server Memory
Part numberML25600-944K8
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR4 LRDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeLoad Reduced
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items512 GB (8 × 64 GB) DDR4 3200 MHz PC4-25600 4Rx4 1.2 V CL22 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

Other versions of this model

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Questions about this item

How much heat does the 1.2V DDR4 3200 kit generate under continuous server load?

The modules run at 1.20 volts with no heat spreader, so they rely on chassis airflow to stay cool during all-day operation.

Does the ASRock Rack ROMED8-2T need any specific BIOS setting or firmware revision to recognise eight 64 GB LRDIMMs?

The kit is validated for the ROMED8-2T with AMD EPYC processors; consult the motherboard manual for the exact BIOS version and memory population rules.

Can I mix these 4Rx4 ECC LRDIMMs with older registered DIMMs already installed in the same board?

Mixing load-reduced and standard registered modules is not supported; all slots should use identical 4Rx4 LRDIMMs for stable operation.

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