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Two bare green DDR4 UDIMM sticks, 64GB kit

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR4 3200 CL22 UDIMM for MSI B550-A PRO memory upgrade

SKU CH-N40D-HS5V2

64 GB DDR4 3200 CL22 dual-channel kit (2×32 GB) built for MSI B550-A PRO 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 total capacity from two 32 GB modules
  • DDR4 3200 speed with PC4-25600 bandwidth rating
  • CL22 latency at 1.2 V for stable operation
  • 288-pin unbuffered non-ECC UDIMM form factor
  • Validated for MSI B550-A PRO motherboard compatibility

Product Identity

NEMIX RAM 64GB DDR4 3200 UDIMM kit delivers two 32GB modules rated at CL22 and 1.20V for the MSI B550-A PRO motherboard. The 288-pin unbuffered non-ECC design uses major OEM chips from Samsung, Micron or Hynix and runs at the standard PC4-25600 data rate. No heat spreaders are fitted, keeping the modules low-profile for tight CPU cooler clearances.

Ideal Users and Limits

This kit suits builders who need the full 64GB capacity supported by the board and want a straightforward two-slot population. Buyers who want tighter timings than CL22 or modules with integrated heat spreaders should look at other options. Systems requiring registered or ECC memory cannot use these unbuffered non-ECC DIMMs.

Decisive Specification

The 2Rx8 dual-rank organisation on each 32GB module determines how the memory controller addresses density and can affect maximum stable frequency on some MSI B550-A PRO BIOS revisions. Verify the motherboard's qualified vendor list for 2Rx8 32GB DIMMs before purchase.

How it compares

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

Price $326.99
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 $5.11 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 lineMSI Gaming Motherboard Compatible Series Memory
Model nameMSI 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 systemsMSI
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

What real-world bandwidth does the PC4-25600 rating on these 3200 MHz modules provide?

The DDR4 3200 kit is rated PC4-25600, which specifies the peak transfer rate the modules are validated to deliver when the motherboard runs them at 3200 MT/s.

Will the 288-pin DDR4 UDIMM interface work with the four slots on my MSI B550-A PRO?

Yes, each stick uses the standard 288-pin DDR4 UDIMM form factor that matches the four DIMM slots on the MSI B550-A PRO.

Do the modules need any extra clearance for a heat spreader when installed under a large CPU cooler?

The modules have no heat spreader, so they sit low in the slots and leave maximum clearance for oversized air coolers.

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