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Four green DDR4 UDIMM sticks without heat spreaders, 64GB total

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 3200 ECC UDIMM CL22 1.2V 2Rx8 memory upgrade

SKU CH-34XP-RCEM5

A 64 GB kit of four 16 GB DDR4 3200 ECC UDIMM modules at CL22 and 1.2 V, validated for select ASRock Rack server motherboards

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 64 GB capacity across four 16 GB modules for high-density server workloads
  • DDR4 3200 speed with CL22 latency delivers responsive data throughput
  • ECC unbuffered design protects data integrity in mission-critical environments
  • 2 V operating voltage reduces power draw and thermal load
  • Validated for ASRock Rack E3C256D4 series motherboards ensuring drop-in compatibility

Capacity and compatibility

This kit delivers 64GB of DDR4 memory across four 16GB modules for ASRock Rack E3C256D4 server and workstation boards. It targets administrators who need ECC protection on unbuffered DIMM slots without registered memory support.

Build and connectors

Each 288-pin UDIMM operates at 1.2V with no heat spreader, keeping the profile low for dense chassis. The 2Rx8 organisation and CL22 timing are validated for the listed motherboards, so installation follows the board manual without extra configuration steps.

Deciding specification

The DDR4 3200 PC4-25600 ECC unbuffered standard is the single parameter that determines fit; boards requiring registered DIMMs, a different voltage, or a non-ECC layout will not accept this kit. Buyers who need registered memory or a higher speed grade must select a different part number.

How it compares

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

Price $518.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $8.11 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 lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 3200 MHz ECC Unbuffered UDIMM
Part numberME25600-628K4
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items64 GB (4 × 16 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN ECC Unbuffered UDIMM KIT

Questions about this item

What DDR4 speed and PC rating does this 64GB kit run at?

The modules operate at DDR4 3200 with a PC4-25600 data rate.

What physical slot and pin count do these 288-pin UDIMMs require?

They fit standard DDR4 UDIMM sockets with 288 pins on the motherboard.

How do I seat the four 16GB sticks so the motherboard recognises all 64GB?

Insert each module vertically until the side clips click; populate the slots your ASRock manual specifies for a four-DIMM configuration.

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