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Two green DDR5 UDIMM sticks with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 CL40 1.1V 2Rx8 UDIMM for Gigabyte B650 Eagle AX AM5 memory upgrade

SKU CH-22W3-BVGFS

A 64 GB dual-channel DDR5 kit running at 4800 MT/s with CL40 latency and 1.1 V operation, validated for the Gigabyte B650 Eagle AX motherboard

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V

Capacity 64GB 2X32GB

  • 64 GB kit (2 × 32 GB) doubles desktop capacity
  • DDR5 4800 MT/s PC5-38400 bandwidth for responsive multitasking
  • CL40 CAS latency keeps timing tight at speed
  • 1 V operation reduces power draw and heat
  • Validated for Gigabyte B650 Eagle AX AM5 motherboard

64GB DDR5 kit for Gigabyte B650 Eagle AX

This 64GB kit contains two 32GB DDR5 UDIMM modules validated for the Gigabyte B650 Eagle AX motherboard. It targets builders and IT professionals who need reliable capacity expansion on AM5 platforms without overclocking headroom. The unbuffered, non-ECC design suits standard desktop workloads and entry-level workstation tasks.

Sustained-load behaviour at CL40 1.1V

Modules run at the JEDEC-standard 4800 MT/s with CL40 timings and 1.10V, so thermal output remains modest during long compiles, virtualization sessions or database workloads. The 2Rx8 organization distributes refresh cycles across ranks, helping maintain throughput when all 64GB are actively addressed. No heat spreader is fitted, so case airflow determines peak temperature under continuous load.

DDR5 UDIMM practical limits

The 288-pin DDR5 interface caps this kit at the base 4800 MT/s data rate and PC5-38400 bandwidth without manual tuning or XMP profiles. Dual-rank density caps the kit at two modules per channel on most consumer boards, so adding a second kit may require command-rate relaxation. ECC and registered signalling are absent, ruling out mission-critical server deployments that demand error correction.

How it compares

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

Price $939.99
Pricier than about 60% of the 21,161 comparable items (median $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 $14.69 per GB
Pricier than about 61% 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 lineGigabyte Gaming Motherboard Compatible Series Memory
Model nameGigabyte DDR5 4800 MHz Non-ECC Unbuffered UDIMM
Part numberMD38400-328K2
Total capacity64 GB (2 × 32 GB)
Product type288-PIN DDR5 UDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsGIGABYTE
In the box
Included items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

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Questions about this item

How much heat and power does the 64 GB DDR5 4800 kit draw when running continuously?

Each module operates at 1.1 V with no heat spreader, so thermals depend on case airflow rather than active cooling.

What must my motherboard provide for these 288-pin UDIMMs to work?

A Gigabyte B650 Eagle AX AM5 board with DDR5 slots and support for 4800 MT/s CL40 2Rx8 unbuffered memory.

Will the 2Rx8 organisation cause issues if I keep older single-rank DDR5 sticks?

Mixing 2Rx8 modules with different rank configurations can prevent the system from training at 4800 MT/s; use identical kits for stability.

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