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Green bare circuit board with black memory chips and gold edge contacts

NEMIX RAM

NEMIX RAM 48GB DDR5 4800 ECC UDIMM CL40 2Rx8 memory upgrade

SKU CH-4RCM-ZXMM6

48 GB DDR5 4800 ECC UDIMM module with CL40 timing and 2Rx8 organisation for compatible ASUS motherboards

  • Total capacity48 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 48GB single module expands system memory capacity
  • DDR5 4800 speed with CL40 latency for responsive performance
  • ECC unbuffered design protects data integrity in critical workloads
  • 1V operation reduces power draw versus higher-voltage modules
  • Validated for ASUS Prime A620M, B650M and Q670M motherboards

48 GB DDR5 ECC UDIMM for ASUS Motherboards

This 48 GB module runs at DDR5 4800 with CL40 latency and 1.10 V operation. It uses a 2Rx8 unbuffered design with on-die ECC for data integrity. The 288-pin UDIMM fits desktop boards that support PC5-38400 speeds. Major-brand Samsung, Micron or Hynix chips provide enterprise-grade reliability.

Suited for ECC-capable ASUS boards.

Builders using compatible ASUS Prime A620M, B650M or Q670M motherboards gain error correction without registered overhead. Systems that require registered DIMMs or lack ECC support in the BIOS cannot use this module. Buyers needing higher capacity per slot should look at larger density kits.

Single 48 GB 2Rx8 rank at DDR5 4800 CL40

The 2Rx8 organisation delivers 48 GB in one slot at the rated 4800 MT/s with CL40 timing. This density and rank structure determines whether the board's memory controller can populate all channels at full speed. Verify the motherboard qualification list for 48 GB 2Rx8 support before purchase.

How it compares

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

Price $935.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 48 GB
Higher than about 55% of the 20,941 comparable items (median 32 GB).
Price per GB $19.50 per GB
Pricier than about 65% 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 lineASUS Gaming Motherboard Compatible Series Memory
Model nameASUS DDR5 4800 MHz ECC Unbuffered UDIMM
Part numberME38400-4828K1
Total capacity48 GB
Product type288-Pin DDR5 ECC UDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items48 GB (1 × 48 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN ECC Unbuffered UDIMM

Questions about this item

Will this 288-pin DDR5 UDIMM fit the DIMM slots on an ASUS Prime B650M-A II-CSM motherboard?

Yes, the module uses the standard 288-pin DDR5 UDIMM form factor that matches the four DDR5 slots on that board.

Which slot should I populate first when installing this single 48 GB stick, and what common step is missed?

Install it in the DIMM_A2 slot (second from the CPU) as the manual directs, and press down firmly until both side latches click — many builders stop before the latches engage.

Does the ECC function on this 2Rx8 module require any future firmware update or battery replacement to stay active?

No, ECC operates in hardware and needs no firmware updates or battery maintenance; the module itself has no serviceable parts.

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