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Four green DDR5 RDIMM sticks with black chips, no heat spreaders, 288-pin registered ECC server memory kit

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 6400 CL52 2Rx4 ECC Registered RDIMM Supermicro H13SRA-F/TF memory upgrade

SKU CH-E67F-1V6PP

A 256GB DDR5 server memory kit of four 64GB registered ECC RDIMMs running at 6400MHz with CL52 latency, validated for Supermicro H13SRA-F and H13SRA-TF motherboards

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

Show 6 more
  • 256 GB total capacity with four 64 GB modules for maximum server density
  • DDR5-6400 speed rated at PC5-51200 for high-throughput workloads
  • CL52 latency at 1.10 V for efficient registered operation
  • 2Rx4 ECC registered RDIMM architecture prevents silent data corruption
  • Verified fitment for Supermicro H13SRA-F and H13SRA-TF motherboards

Exact-match server upgrade

This 256 GB kit contains four 64 GB DDR5 registered ECC RDIMMs rated at 6400 MT/s with CL52 latency and 1.1 V operation. The modules use a 2Rx4 organisation and 288-pin form factor to match the memory controller expectations of the Supermicro H13SRA-F and H13SRA-TF motherboards.

Suited for fully populated enterprise servers

The registered buffer and on-die ECC allow every slot to run at full capacity while correcting single-bit errors in flight. Buyers who need unbuffered UDIMMs, SODIMMs, or non-ECC memory for workstation or consumer platforms should look elsewhere because this kit is built for the specific registered RDIMM topology these server boards require.

Verify board population rules before ordering

Consult the motherboard manual for the approved DIMM population order, maximum supported capacity per channel, and any BIOS version requirements for DDR5 6400 operation. Confirm that your chassis provides clearance for standard-height RDIMMs and that the power budget accounts for the additional modules.

How it compares

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

Price $7,732.99
Pricier than about 84% 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 $30.21 per GB
Pricier than about 86% 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 numberMR51200-924K4
Total capacity256 GB (4 × 64 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 4 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Do I need a Supermicro H13SRA-F or H13SRA-TF motherboard for this 256GB kit to work?

Yes, the 4x64GB DDR5 6400 CL52 2Rx4 Registered ECC RDIMM kit is validated for those two Supermicro motherboards and their DDR5 6400 memory controller.

Can I mix these 2Rx4 Registered ECC modules with older DDR5 UDIMMs in the same server?

No, Registered RDIMMs and unbuffered UDIMMs use different electrical signalling and cannot be installed together on the H13SRA-F or H13SRA-TF platforms.

How do I confirm the kit runs at 6400 MT/s with CL52 after installation?

Check the BIOS memory information or run a tool such as dmidecode to verify speed shows 6400 MT/s, CAS latency 52, voltage 1.1V and all four 64GB ranks detected.

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