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Sixteen green DDR5 RDIMM modules in anti-static packaging

NEMIX RAM

NEMIX RAM 768GB (16 x 48GB) DDR5 6400MHz PC5-51200 2Rx8 1.1V 288-PIN ECC RDIMM Server RAM

SKU CH-7FTX-59YXM

A 768GB registered ECC DDR5 kit of sixteen 48GB modules running at 6400MHz with CAS 52 latency

  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • Massive 768 GB capacity from sixteen 48 GB modules
  • DDR5 6400 MT/s speed rated at PC5-51200 bandwidth
  • ECC registered design protects data integrity in servers
  • Low 1.1 V operation reduces power draw per module
  • Dual-rank 2Rx8 organisation with CAS 52 latency

Server memory kit for registered DDR5 platforms

This 768GB kit contains sixteen 48GB ECC RDIMM modules rated at DDR5 6400 PC5-51200. It is built for servers and workstations that require registered memory with error correction. The kit is not compatible with standard desktop or consumer PC motherboards that use unbuffered DIMMs.

Sustained load behaviour with registered ECC design

Registered buffering reduces electrical load on the memory controller, allowing all sixteen modules to operate together at the rated 6400 speed. ECC circuitry detects and corrects single-bit errors during continuous operation, while the 1.1V voltage helps maintain thermal stability across the full population of slots.

Density and rank configuration decide fit

Each module uses a 2Rx8 organisation, so the kit presents thirty-two ranks to the memory controller. Platforms that limit the number of supported ranks per channel or total system capacity may not recognise the full 768GB. Verify the motherboard rank and capacity limits before purchase.

How it compares

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

Price $18,812.99
Pricier than about 92% of the 6,523 comparable items (median $188.99).
CAS latency 52
Higher than about 90% of the 439 comparable items (median 40).

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#: MR51200-4828K16-SM-SYS-112C-TN
Part numberPart#: MR51200-4828K16-SM-SYS-112C-TN
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latency52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Power
Rated voltage1.1 V

Questions about this item

Does the 1.1V operating voltage keep power draw low when all 16 modules run continuously?

Each module operates at 1.1V, the standard DDR5 voltage, so total power scales with the 768GB capacity rather than exceeding the DDR5 baseline.

Must the motherboard have 16 DDR5 RDIMM slots and support registered ECC memory for this kit to function?

Yes, the kit contains 16 registered ECC RDIMMs, so the platform needs 16 DDR5 RDIMM slots and a chipset that enables registered ECC operation.

Can these 2Rx8 modules be mixed with existing 1Rx8 DDR5 RDIMMs in the same server?

Mixing 2Rx8 and 1Rx8 ranks is possible only if the motherboard and memory controller explicitly support mixed-rank populations; otherwise the system may not boot or may run at reduced speed.

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