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Four green DDR4 UDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 3200 CL22 ECC UDIMM Kit for ASRock Rack B550D4 Series

SKU CH-9Z05-K1NJ2

64GB kit of four 16GB DDR4 3200 ECC UDIMMs with CL22 latency at 1.2V for ASRock Rack B550D4 motherboards

  • Capacity64GB (4 x 16GB)
  • SpeedDDR4 3200 (PC4 25600)
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 64GB kit expands server memory capacity
  • ECC UDIMM protects data integrity under load
  • DDR4 3200 CL22 matches platform timing
  • 2V operation reduces power draw
  • 4x16GB 2Rx8 layout fills four DIMM slots

ASRock Rack B550D4 ECC UDIMM Kit

This NEMIX RAM kit delivers 64GB of DDR4 ECC unbuffered memory across four 16GB modules. It is built for ASRock Rack B550D4 series motherboards including the B550D4-4L, B550D4ID-2L2T, B550D4M, B550D4U and B550D4U-2T models. The modules run at DDR4 3200 with CL22 latency at 1.20V. System builders targeting those specific server boards use this kit to add error-correcting capacity.

Suited for ECC server builds; not for non-ECC boards

The kit suits administrators populating ASRock Rack B550D4 platforms that require ECC unbuffered UDIMMs. It will not work in systems that only accept non-ECC memory or registered DIMMs. Buyers needing registered ECC modules or consumer desktop memory without error correction should look elsewhere. Compatibility is limited to the listed motherboard series.

64GB quad-channel capacity at DDR4 3200

Four 16GB 2Rx8 modules provide 64GB total, filling four slots for quad-channel bandwidth on supported boards. The DDR4 3200 speed with CL22 timing handles virtualization, file serving and database workloads within the platform's memory controller limits. Headroom ends at the board's maximum supported frequency and total capacity per slot.

Highlights

  • 64GB kit expands server memory capacity
  • ECC UDIMM protects data integrity under load
  • DDR4 3200 CL22 matches platform timing
  • 2V operation reduces power draw
  • 4x16GB 2Rx8 layout fills four DIMM slots

Specifications

BrandNEMIX RAM
SeriesASRock Server Motherboard Compatible Series Memory
ModelASRock DDR4 3200MHZ ECC Unbuffered UDIMM
Part NumberME25600-628K4
Capacity64GB (4 x 16GB)
SpeedDDR4 3200 (PC4 25600)
ECCYes
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemASRock
CAS LatencyCL22
Heat SpreaderNo
Type288-Pin DDR4 ECC UDIMM
Rank2Rx8
FeaturesDDR4 ECC Unbuffered UDIMM Motherboard Compatible
Package Content64GB (4X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V CL22 288-PIN ECC Unbuffered UDIMM KIT

Questions about this item

Do I need a motherboard with four 288-pin DDR4 slots to install all four 16 GB modules?

Yes, the kit contains four 288-pin UDIMMs, so the board must provide four DDR4 DIMM slots.

Will these 3200 CL22 ECC UDIMMs run at rated speed on a B550D4 board that currently uses slower DDR4?

The motherboard will negotiate the highest common speed; the modules are rated for DDR4 3200 at CL22 and 1.20 V.

How can I confirm the ECC function is active after installing the kit?

Check the BIOS memory information screen or run a system utility that reports ECC status for each DIMM.

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