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Two bare green DDR5 UDIMM modules, no heat spreader

NEMIX RAM

NEMIX RAM 64GB (2×32GB) DDR5 4800 CL40 1.1V 2Rx8 UDIMM for GIGABYTE B850I AORUS PRO

SKU CH-RXXW-S4EYC

64 GB dual-channel DDR5 kit with two 32 GB UDIMMs at 4800 MT/s, CL40 and 1.1 V, validated for the Gigabyte B850I Aorus Pro mini-ITX board

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 64 GB kit lets you run heavy workloads smoothly
  • 4800 MT/s DDR5 speed moves data fast
  • CL40 latency keeps response times low
  • 1 V operation reduces power draw
  • 2Rx8 dual-rank layout boosts memory density

Built for GIGABYTE B850I AORUS PRO

This 64 GB kit contains two 32 GB DDR5 UDIMM modules rated at 4800 MT/s with CL40 latency. It is designed specifically for the GIGABYTE B850I AORUS PRO Mini-ITX motherboard and suits builders who need high capacity on a two-slot board.

Fits two-slot Mini-ITX layout

The dual-rank 2Rx8 organisation delivers 64 GB across both DIMM slots, leaving no empty sockets for future expansion. Each module runs at the standard 1.10 V and uses the 288-pin DDR5 interface, so installation follows the normal UDIMM procedure without extra power or cooling requirements.

Steady throughput at JEDEC settings

Operating at the base 4800 speed with CL40 timings, the kit maintains consistent bandwidth during prolonged workloads such as large dataset processing or virtual machine hosting. The unbuffered non-ECC design means error correction is handled by the CPU memory controller rather than on-module circuitry.

How it compares

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

Price $955.99
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 $14.94 per GB
Pricier than about 61% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Memory
Model nameDDR5 Non-ECC Unbuffered UDIMM Memory
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 288-PIN Non-ECC UDIMM KIT

Questions about this item

Does the 1.10V operating voltage of these DDR5 modules stay stable during extended workloads?

The kit is rated at 1.10V and uses standard JEDEC DDR5 power management, so voltage remains steady under continuous load.

How warm do the bare 2Rx8 chips get when the system runs all day without a heat spreader?

Without a spreader the chips rely on case airflow; typical DDR5 4800 operation stays within normal thermal limits in a ventilated chassis.

Will the GIGABYTE B850I AORUS PRO motherboard automatically configure the CL40 timings at 4800 MT/s?

Yes, the board reads the SPD profile on these UDIMMs and sets 4800 MT/s CL40 without manual adjustment.

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