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Eight green DDR5 ECC RDIMM modules in a row

NEMIX RAM

NEMIX RAM 1TB (8 x 128GB) DDR5 6400MHz PC5-51200 2Rx4 1.1V 288-PIN ECC RDIMM server RAM

SKU CH-KRJ6-ATHR5

Eight 128 GB DDR5 registered ECC modules at 6400 MHz with CAS 52 and 1.1 V for high-capacity server upgrades

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 1TB total capacity with eight 128GB modules
  • DDR5 6400 speed rated at PC5-51200
  • ECC registered design detects and corrects data errors
  • 2Rx4 organisation on 288-pin DIMMs
  • Low 1.1V operating voltage reduces power draw

Server DDR5-6400 registered ECC kit

This NEMIX RAM kit provides 1 TB of DDR5 server memory across eight 128 GB registered DIMMs. Each module runs at 6400 MT/s with a CAS latency of 52 and operates at 1.1 V. The 2Rx4 organisation and on-die ECC suit multi-socket platforms that require registered, error-correcting memory. It is not compatible with standard desktop or laptop motherboards.

Replacing slower or smaller registered DDR5

The kit upgrades systems currently populated with lower-capacity or lower-speed registered DDR5 DIMMs. The jump is worthwhile when the workload needs the full 1 TB aggregate capacity or the 6400 MT/s data rate to reduce latency-bound stalls. Servers already running at this speed and capacity will not benefit from the swap.

Verify registered DDR5-6400 support and slot count

Confirm the motherboard accepts 288-pin registered DDR5 DIMMs at 6400 MT/s and that the CPU memory controller supports 2Rx4 modules at this frequency. Ensure eight DIMM slots are available and that the BIOS is current enough to initialise the full 1 TB configuration. Cooling clearance for tall heatsinks should also be checked.

How it compares

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

Price $32,485.99
Pricier than about 94% of the 6,523 comparable items (median $188.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 92% of the 6,064 comparable items (median 32 GB).
CAS latency 52
Higher than about 90% of the 439 comparable items (median 40).
Price per GB $32.49 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 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
Model namePart#: MR51200-724K8-SM-SYS-112C-TN
Part numberPart#: MR51200-724K8-SM-SYS-112C-TN
Total capacity1 TB (8 × 128 GB)
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latency52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.1 V

Questions about this item

Will the 288-pin DDR5 RDIMMs fit my server's memory slots?

These are standard 288-pin DDR5 RDIMMs, so they fit any server board with DDR5 RDIMM slots.

Do I need to populate all eight 128GB modules at once, or can I start with fewer?

You can install fewer than eight modules, but follow the motherboard's population rules for 2Rx4 registered DIMMs to keep the memory controller stable.

How long do the Samsung, Micron or Hynix chips typically last before replacement is needed?

Server-grade DDR5 chips are rated for years of continuous operation; replace a module only if ECC logs report uncorrectable errors or the system fails POST.

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