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Four green circuit boards with black chips in a row

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR4 3200 CL22 2Rx8 1.2V 288-Pin UDIMM MSI B550-A PRO Compatible memory upgrade

SKU CH-NN5T-YE2T9

A 128 GB DDR4 kit of four 32 GB UDIMM modules running at 3200 MT/s CL22 for MSI B550-A PRO motherboards

  • Capacity128GB (4 x 32GB)
  • SpeedDDR4 3200 (PC4 25600)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 128GB total capacity in a 4x32GB kit
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • CL22 CAS latency at 1.20V operating voltage
  • 2Rx8 dual-rank unbuffered UDIMM modules
  • Validated for MSI B550-A PRO motherboard compatibility

128GB DDR4 3200 Kit for MSI B550-A PRO

This 128GB kit contains four 32GB DDR4 UDIMM modules rated at 3200MHz with CL22 latency. It is built for the MSI B550-A PRO motherboard and suits users who need maximum capacity for heavy multitasking or content creation. The unbuffered non-ECC design matches standard desktop requirements. Modules run at 1.2V without a heat spreader.

Suits high-capacity desktop builds.

Builders expanding a compatible MSI board to 128GB will find the density and speed appropriate. Systems that require ECC error correction or registered modules cannot use this kit. Laptops and small-form-factor boards needing SO-DIMM or lower-profile memory should look elsewhere. The four-module layout also demands four free DIMM slots.

2Rx8 organisation on four 32GB UDIMMs

Each module uses a 2Rx8 rank structure, giving the kit its total density across the 288-pin interface. This organisation determines how the memory controller addresses the chips and is the key specification for compatibility verification. Buyers should confirm their board supports 2Rx8 32GB UDIMMs at 3200MHz before purchasing.

Highlights

  • 128GB total capacity in a 4x32GB kit
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • CL22 CAS latency at 1.20V operating voltage
  • 2Rx8 dual-rank unbuffered UDIMM modules
  • Validated for MSI B550-A PRO motherboard compatibility

Specifications

BrandNEMIX RAM
SeriesMSI Gaming Motherboard Compatible Series Memory
ModelMSI DDR4 3200MHZ Non-ECC Unbuffered UDIMM
Part NumberMD25600-328K4
Capacity128GB (4 x 32GB)
SpeedDDR4 3200 (PC4 25600)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemMSI
CAS LatencyCL22
Heat SpreaderNo
Type288-Pin DDR4 UDIMM
Rank2Rx8
FeaturesDDR4 Non- ECC Unbuffered UDIMM Motherboard Compatible
Package Content128GB (4X32GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V CL22 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

What comes in the box and is anything else needed to install the 4 x 32 GB kit?

The box contains four 32 GB DDR4 3200 UDIMM modules for a total of 128 GB. No extra parts or cables are required; the sticks plug directly into the motherboard DIMM slots.

Should I choose the 128 GB CL22 kit or a lower-capacity option for the MSI B550-A PRO?

The 128 GB (4 x 32 GB) CL22 kit fills all four slots on the MSI B550-A PRO and runs at 3200 MT/s. Pick it when you need the maximum supported capacity; choose a smaller kit if 128 GB exceeds your workload.

What does the 3200 MT/s rating deliver once the modules are seated in the B550-A PRO?

At 3200 MT/s with CL22 timing and 1.2 V, the kit provides the board's standard DDR4 bandwidth for multitasking, content creation and gaming workloads without manual overclocking.

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