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Two green DDR4 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR4 3200 PC4-25600 CL22 288-Pin UDIMM memory upgrade

SKU CH-DJ0B-9BZJ0

A 64 GB dual-channel DDR4 3200 kit with two 32 GB unbuffered UDIMMs at CL22 and 1.2 V for ASUS B560, B660, B760, H770 and Z790 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 for demanding workloads
  • DDR4 3200 speed with PC4-25600 bandwidth
  • CL22 latency at 1.2 V operation
  • 288-pin UDIMM fits standard desktop slots
  • Tested compatible with ASUS B560 B660 H770 Z790M motherboards

ASUS DDR4 3200 kit

This 64GB kit delivers two 32GB DDR4 3200 modules built for ASUS Prime B660, B760, H770, Z790M and B560 motherboards. Unbuffered non-ECC UDIMM layout keeps installation straightforward for desktop builders adding capacity. The 2Rx8 organisation and CL22 timing match the platform defaults for stable operation.

Thermals and power

Modules run at 1.2V without a heat spreader, so they rely on case airflow for cooling. Standard DDR4 voltage keeps power draw low during typical desktop workloads. No active cooling is required, leaving the memory silent under normal use.

Build fit

288-pin DDR4 form factor slots into any compatible ASUS board with four DIMM slots. Dual-rank density frees two slots for future expansion if the board supports it. Buyers needing ECC or registered memory should look elsewhere.

How it compares

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

Price $337.99
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 $5.28 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Gaming Motherboard Compatible Series Memory
Model nameASUS 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 systemsASUS
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

How do I install the 288-pin DDR4 UDIMM modules on an ASUS Prime B660 or Z790M board, and what step is often missed?

Align the notch on each 32 GB stick with the slot key, press down firmly until both retention clips click, then enable XMP in BIOS to run at 3200 MT/s — skipping the BIOS step leaves the kit at a lower default speed.

What maintenance or replacement will this 64 GB kit need over its service life?

No routine maintenance is required; the unbuffered non-ECC modules have no heat spreader and run at 1.20 V, so only a failed stick would need replacement under the lifetime warranty.

What limit appears first when the 2Rx8 modules run sustained workloads at CL22?

The CAS 22 latency at 3200 MT/s sets the throughput ceiling before voltage or thermal limits become a factor.

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