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Green printed circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 8GB DDR4 3200 CL22 1Rx8 UDIMM ASRock B550M-HDV memory upgrade

SKU CH-TMJH-RSZ4R

8GB DDR4 3200 UDIMM module with CL22 latency and 1.2V operation, validated for ASRock B550M-HDV motherboards

  • Total capacity8 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 8GB DDR4 3200MHz boosts multitasking speed
  • CL22 1.20V timing balances efficiency and stability
  • 288-pin UDIMM fits ASRock B550M-HDV directly
  • 1Rx8 single-rank layout ensures broad compatibility
  • Major OEM chips deliver reliable desktop performance

8 GB DDR4 3200 UDIMM for ASRock B550M-HDV

This 8 GB DDR4 3200 CL22 module is built for the ASRock B550M-HDV motherboard. It runs at 1.2 V as a single-rank 1Rx8 UDIMM without ECC or a heat spreader. The part number is MD25600-818K1 and uses major OEM chips.

Tool-free DIMM slot installation

Align the notch with the 288-pin slot and press down until the retention clips click. No driver or BIOS update is required for basic operation. The most common issue is not seating the module fully, which can prevent the system from posting.

Builders adding 8 GB to a B550M-HDV system

Suits anyone upgrading that specific board with a single non-ECC stick. Not for servers or workstations needing ECC or registered memory. Buyers wanting higher capacity per slot or lower latency timings should look at other modules.

How it compares

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

Price $50.99
Cheaper than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.37 per GB
Cheaper than about 62% 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 numberMD25600-818K1
Total capacity8 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 rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items8 GB (1 × 8 GB) DDR4 3200 MHz PC4-25600 1Rx8 1.2 V CL22 288-PIN Non-ECC Unbuffered UDIMM

Questions about this item

How do I verify the module is running at 3200 MT/s CL22 1.20 V after installation?

Open the BIOS or a tool such as CPU-Z and confirm the memory tab shows DDR4-3200, CAS latency 22, voltage 1.20 V and a single 1Rx8 288-pin UDIMM detected.

What ships in the box and is anything else required to install it?

The package contains one 8 GB DDR4 3200 CL22 1.20 V 288-pin UDIMM module; no extra cables, brackets or software are needed for installation.

Which version should I choose for an ASRock B550M-HDV build?

Select the MD25600-818K1 part number — it is an 8 GB DDR4 3200 CL22 1Rx8 UDIMM validated for that motherboard.

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