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Green DDR4 RDIMM module with black chips and gold contacts

NEMIX RAM

NEMIX RAM 16GB DDR4 3200 CL22 ECC RDIMM Supermicro H12DST-B EPYC

SKU CH-AYMR-3QV9H

16 GB DDR4 3200 CL22 ECC registered DIMM validated for Supermicro H12DST-B EPYC servers

  • Total capacity16 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 16 GB DDR4 3200 memory expands server capacity
  • ECC registered design protects data integrity in critical workloads
  • CL22 latency at 1.20 V balances speed and stability
  • 288-pin 2Rx8 module fits Supermicro H12DST-B EPYC systems
  • Major OEM Samsung Micron Hynix chips ensure reliable operation

16GB DDR4 3200 ECC RDIMM for Supermicro EPYC

This registered DIMM provides 16GB of DDR4 3200 memory with ECC error correction. It is built for the Supermicro H12DST-B motherboard and AMD EPYC server platforms. The module uses a 2Rx8 organisation and operates at 1.2V.

Registered DDR4 3200 speed and CL22 latency

The PC4-25600 standard sets the maximum data rate at 3200 MT/s with a CAS latency of 22 cycles. Registered buffering adds one clock cycle of address delay, which limits the highest frequencies reachable compared to unbuffered modules. ECC parity bits reduce usable bandwidth slightly versus non-ECC equivalents.

Simple DIMM slot installation with population rules

The 288-pin RDIMM inserts vertically into the motherboard DDR4 slots and locks with the side latches. Supermicro H12DST-B requires specific slot population order per CPU socket; installing modules in the wrong sequence will prevent the system from posting. No heat spreader is fitted, so airflow across the PCB must be maintained by the chassis fans.

How it compares

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

Price $124.99
Cheaper than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.81 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR4 3200 MHz ECC RDIMM Registered Server Memory
Part numberMR25600-628K1
Total capacity16 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro
In the box
Included items16 GB (1 × 16 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Is this 16 GB module the right capacity for my Supermicro H12DST-B, or should I choose a different size?

This module provides 16 GB in a single 2Rx8 DDR4 RDIMM. The H12DST-B supports multiple capacities per slot; match the total memory you need and keep rank counts consistent across channels.

What does the 3200 speed rating actually deliver once installed in an EPYC system?

The module runs at DDR4 3200 (PC4-25600) with CL22 latency at 1.2 V. Real-world throughput depends on the CPU memory controller, channel population and BIOS settings.

How does the 288-pin RDIMM interface and ECC registration affect compatibility and limits?

The 288-pin DDR4 RDIMM form factor with registered ECC is required by the H12DST-B. Registered buffering allows higher capacities per channel, while ECC corrects single-bit errors for server reliability.

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