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Four green DDR5 RDIMM sticks without heat spreaders in a 64GB kit

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR5 6400 CL52 1.1V ECC RDIMM 1Rx8 288-pin memory upgrade

SKU CH-GDCT-KE0DZ

A 64 GB DDR5 server kit of four 16 GB registered ECC RDIMMs running at 6400 MT/s with CL52 latency and 1.1 V, validated for Supermicro H13SRA-F and H13SRA-TF motherboards

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 64GB 4X16GB

Show 6 more
  • Full 64 GB capacity recognised at DDR5-6400 speed
  • Registered ECC design prevents silent data corruption in production
  • 1 V operation lowers power draw per 16 GB module
  • 288-pin RDIMM form factor fits Supermicro H13SRA boards exactly
  • Major-brand Samsung, Micron or Hynix chips ensure enterprise reliability

Exact-match server kit

This 64GB kit contains four 16GB DDR5 6400 RDIMMs built to the exact rank, voltage and timing the Supermicro H13SRA-F and H13SRA-TF memory controllers expect. Registered ECC architecture offloads the controller so every slot runs fully populated at rated speed while correcting single-bit errors on the fly. The 1.1V CL52 specification matches the board's native profile without manual tuning.

Sustained enterprise stability

Registered buffering keeps electrical load low across all four slots during continuous multi-threaded workloads, preventing the signal degradation that can appear when consumer modules fill every channel. ECC detection and correction operates transparently under sustained write pressure, stopping silent data corruption before it reaches storage or network layers. The 1Rx8 organisation maintains consistent latency across the full 64GB capacity during long-running compute or virtualization tasks.

DDR5 platform limits

DDR5 6400 (PC5-51200) is the maximum JEDEC speed this motherboard family supports with four ranks populated, so the kit cannot run faster without exceeding the platform's qualified memory controller specification. The 288-pin RDIMM form factor is mandatory; UDIMM or SODIMM modules will not fit the server's DIMM slots. Consult the Supermicro manual for approved population order and maximum supported capacity per channel before installation.

How it compares

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

Price $1,887.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $29.50 per GB
Pricier than about 84% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-618K4
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB 4 × 16 GB DDR5 6400 MHz PC5-51200 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Does the 1.1 V DDR5 kit run cool enough for a fully populated server chassis?

The modules operate at 1.1 V with no heat spreader, so they rely on the chassis airflow that Supermicro specifies for the H13SRA-F and H13SRA-TF platforms.

What motherboard slot type must my system provide for these 288-pin RDIMMs?

The kit requires DDR5 RDIMM slots on a Supermicro H13SRA-F or H13SRA-TF motherboard; UDIMM or SODIMM sockets will not accept the 288-pin registered form factor.

Can I mix the 1Rx8 Registered ECC modules with unbuffered UDIMMs already installed?

No, the registered architecture and ECC function are only supported when every populated slot uses matching RDIMMs; mixing with unbuffered memory will prevent the system from booting.

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