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Four green DDR5 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 192GB (4x48GB) DDR5 5600 ECC UDIMM CL46 1.1V ASRock Rack W680D4U-2L2T/G5 memory upgrade

SKU CH-87CE-DT8K8

A 192GB kit of four 48GB DDR5 5600 ECC unbuffered UDIMMs at CL46 and 1.1V, built for the ASRock Rack W680D4U-2L2T/G5 motherboard

  • Total capacity192 GB (4 × 48 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 192 GB total capacity across four 48 GB modules
  • DDR5 5600 speed for high bandwidth workloads
  • ECC unbuffered design protects data integrity
  • Low 1.10 V voltage reduces power draw
  • Validated for ASRock Rack W680D4U-2L2T/G5 motherboard

192GB DDR5 ECC UDIMM kit for ASRock Rack

This 192GB kit contains four 48GB DDR5 5600 modules built for the ASRock Rack W680D4U-2L2T/G5 motherboard. It targets servers and workstations that require ECC protection and high capacity without registered DIMMs. The unbuffered design keeps latency low for supported platforms. Buyers get a matched quad-channel set validated for this specific board.

ECC and 2Rx8 organisation change data integrity

Each module uses 2Rx8 organisation with on-die ECC at 1.1V and CL46 timing. The error-correcting code detects and corrects single-bit errors in flight, which reduces silent data corruption in critical workloads. The dual-rank layout doubles bank groups per DIMM, helping the memory controller sustain throughput across all four slots. No heat spreader is fitted, so airflow across the bare PCB must be adequate.

Verify four free 288-pin slots

The motherboard must expose four DDR5 288-pin UDIMM slots and officially support DDR5-5600 ECC unbuffered memory at 1.1V. Confirm the BIOS version enables 48GB single-rank density per slot and quad-channel operation at the rated speed. Systems limited to lower speeds, registered DIMMs or smaller maximum capacity per slot will not run this kit as specified.

How it compares

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

Price $3,820.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 192 GB (4 × 48 GB)
Higher than about 75% of the 20,941 comparable items (median 32 GB).
Price per GB $19.90 per GB
Pricier than about 65% 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 Memory
Model nameDDR5 ECC Unbuffered UDIMM Memory
Part numberME44800-4828K4
Total capacity192 GB (4 × 48 GB)
Product type288-Pin DDR5 ECC UDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL46
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items192 GB (4 × 48 GB) DDR5 5600 MHz PC5-44800 2Rx8 1.1 V 288-PIN ECC UDIMM KIT

Questions about this item

Will the 48 GB modules need any firmware updates or heatsink additions later?

The kit uses standard JEDEC DDR5 ECC UDIMM modules without heatsinks, so no firmware updates are required and no aftermarket cooling is expected for normal server workloads.

What limit appears first when the 192 GB kit runs at 5600 MT/s continuously?

The CL46 latency at 1.10 V is the primary timing constraint; sustained throughput will be bounded by the 5600 MT/s data rate and the dual-rank 2Rx8 organisation.

How much heat and power should I expect from four 48 GB sticks running all day?

Each module operates at 1.10 V DDR5 standard voltage with no heat spreader, so total power draw stays within typical UDIMM limits and airflow from the chassis fans is sufficient.

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