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Four green DDR5 RDIMM sticks without heat spreaders, 288-pin, 256GB kit

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5-6400 ECC Registered RDIMM CL52 1.1V 2Rx4 Supermicro H14SSL-N memory upgrade

SKU CH-H1TX-VS1Q3

A 256 GB DDR5 registered ECC memory kit with four 64 GB modules at 6400 MT/s, CL52 and 1.1 V, validated for the Supermicro H14SSL-N motherboard

  • 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

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  • 256GB total capacity across four 64GB modules for maximum server density
  • DDR5-6400 speed with CL52 latency delivers rated bandwidth for demanding workloads
  • Registered ECC architecture offloads the memory controller and corrects single-bit errors on the fly
  • 10V operation matches the platform specification for stable full-population performance
  • Verified fitment for Supermicro H14SSL-N motherboard with 288-pin RDIMM form factor

Exact-match DDR5 kit for Supermicro H14SSL-N

This 256GB kit contains four 64GB DDR5-6400 Registered ECC RDIMMs built to the precise rank, voltage and timing the Supermicro H14SSL-N memory controller expects. The modules are recognized at full capacity and run at their rated speed without manual tuning. IT administrators and system integrators deploying memory-intensive workloads on this platform receive a validated, single-part upgrade.

Registered ECC limits and DDR5-6400 constraints

Registered RDIMM architecture buffers address and command signals so every slot can be fully populated at the rated 6400 MT/s data rate while ECC corrects single-bit errors on the fly. The 288-pin DDR5 form factor is not interchangeable with UDIMM or SODIMM slots, and the 1.1V operating voltage is fixed by the DDR5 standard. Buyers needing non-ECC unbuffered memory or a different pin layout cannot use this kit.

Upgrade path from lower-capacity DDR5 RDIMMs

Replacing a smaller matched set of DDR5 Registered ECC modules with this four-module kit doubles or quadruples usable memory while keeping the same 6400 MT/s speed, CL52 latency and 1.1V power envelope. The jump is worthwhile when workloads exceed the current capacity ceiling and the motherboard population rules allow four ranks per channel. Systems already at the board’s maximum supported capacity or requiring UDIMM modules gain no benefit.

How it compares

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

Price $8,572.99
Pricier than about 85% 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 $33.49 per GB
Pricier than about 90% 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

Should I choose the 256GB kit or a smaller capacity for my Supermicro H14SSL-N?

The 256GB kit provides four 64GB modules that fill the board's DDR5 RDIMM slots for maximum registered ECC capacity at 6400 MT/s.

What does DDR5-6400 actually deliver once installed in the server?

The modules run at 6400 MT/s with CL52 latency at 1.1V, giving the memory controller the exact speed and timing it expects for full registered ECC throughput.

How does the 288-pin RDIMM interface limit or enable performance on this platform?

The 288-pin registered DDR5 form factor matches the H14SSL-N's slot keying and buffered architecture, allowing all four ranks per DIMM to operate at the rated 6400 MT/s without downclocking.

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