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Two green DDR4 UDIMM sticks, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR4 3200 CL22 2Rx8 1.2V 288-pin UDIMM memory upgrade

SKU CH-P9H5-J4NRN

64 GB dual-channel DDR4-3200 CL22 kit with two 32 GB unbuffered UDIMMs at 1.2 V for ASRock B660M motherboards

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 64 GB capacity with two 32 GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • CL22 CAS latency for responsive desktop performance
  • 2 V operation keeps power draw low
  • Validated for ASRock B660M motherboards including HDV ITX ac and eDP models

ASRock B660 compatible 64 GB kit

This 64 GB DDR4 kit contains two 32 GB unbuffered UDIMM modules built for ASRock B660M-HDV, B660M-ITX/ac and B660M-ITX/eDP motherboards. It runs at 3200 MT/s with CL22 latency at 1.20 V. The modules use major OEM chips from Samsung, Micron or Hynix and carry no heat spreader.

Two-slot 288-pin DDR4 upgrade

Each module is a 2Rx8 dual-rank 288-pin DDR4 DIMM that occupies a single standard memory slot. The kit adds 64 GB total capacity without requiring ECC or registered support. It frees no additional slots beyond the two used and needs no extra cooling hardware because the design is bare.

Sustained load stability validated

All modules undergo rigorous stress testing under load before shipping to confirm stability during extended workloads. The 1.20 V operating voltage and standard JEDEC timings keep thermal output predictable over long sessions. Buyers who need ECC error correction or registered buffering should choose a different memory type.

How it compares

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

Price $378.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $5.92 per GB
Cheaper than about 66% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Gaming Motherboard Compatible Series Memory
Model nameASRock DDR4 3200 MHz Non-ECC Unbuffered UDIMM
Part numberMD25600-328K2
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR4 UDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items64 GB (2 × 32 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will CL22 latency become a bottleneck during sustained heavy workloads?

CL22 is the rated CAS latency at DDR4 3200; it remains constant under load and does not throttle further.

How much heat and power should I expect from this 1.20 V kit running all day?

The modules run at 1.20 V with no heat spreader; power draw stays at standard DDR4 3200 levels and thermals are typical for unbuffered UDIMMs.

Do I need an ASRock B660M motherboard with four 288-pin slots to use both 32 GB modules?

The kit is validated for ASRock B660M-HDV, B660M-ITX/ac and B660M-ITX/eDP boards; each module fits a standard 288-pin DDR4 UDIMM slot.

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