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Four green DDR4 UDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR4 3200 CL22 1.2V 288-pin UDIMM memory upgrade

SKU CH-J708-20669

A 128 GB DDR4-3200 CL22 kit of four 32 GB unbuffered UDIMMs at 1.2 V for ASUS B450, B550 and X570 motherboards

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 128 GB capacity across four 32 GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • CL22 latency with 1.20 V low-voltage operation
  • 288-pin unbuffered UDIMM fits standard desktop slots
  • Tested compatible with ASUS Prime B550M-A WiFi II, B450M-A II, X570-PRO

128GB DDR4 3200 kit for ASUS boards

This 128GB kit contains four 32GB DDR4 3200 UDIMMs built for ASUS Prime B550M-A WiFi II, Prime B450M-A II and Prime X570-PRO motherboards. It targets desktop builders who need maximum capacity on these specific platforms. The modules are non-ECC and unbuffered for standard desktop use.

CL22 latency at 1.2V

The decisive specification is CAS latency 22 at the JEDEC-standard 1.2V operating voltage. This timing and voltage combination determines whether the kit runs at its rated 3200MT/s without manual adjustment on the supported ASUS boards. No heat spreader is fitted.

Four-slot population on supported ASUS boards

The kit fills all four DIMM slots on the listed ASUS Prime motherboards, delivering 128GB in a single matched set. It requires a board that accepts 2Rx8 288-pin DDR4 UDIMMs at 3200MT/s. Builds needing ECC or registered memory cannot use this kit.

How it compares

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

Price $657.99
Pricier than about 55% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.14 per GB
Cheaper than about 75% 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 numberMD25600-328K4
Total capacity128 GB (4 × 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 items128 GB (4 × 32 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

What does the 3200 speed mean once the kit is installed in my desktop?

The modules run at DDR4 3200 (PC4-25600) so the memory controller transfers data at 3200 MT/s, delivering the rated bandwidth when the motherboard enables the matching profile.

How does the 288-pin DDR4 interface limit what I can use this kit with?

The 288-pin UDIMM form factor fits only desktop motherboards with DDR4 slots; it cannot be used in laptops, servers that require registered DIMMs, or any board wired for DDR5.

What physical space and power do the four 32 GB sticks need?

Each stick is a standard-height 288-pin UDIMM without a heat spreader, draws 1.2 V, and the kit occupies four adjacent DIMM slots on the motherboard.

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