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A-Tech

A-Tech 4GB DDR3 1866 ECC UDIMM 2Rx8 Server Memory

SKU CH-CNBB-R2Y4X

4GB DDR3 1866MHz ECC UDIMM server memory with CL13 latency and 1.5V operation

  • Total capacity4 GB
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL13
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • ECC protection guards data integrity in servers
  • 1866 MHz DDR3 speed accelerates workloads
  • 50 V standard voltage keeps power draw low
  • 240-pin UDIMM fits unbuffered server slots
  • 2Rx8 dual-rank layout maximises 4 GB capacity

4 GB DDR3 1866 ECC UDIMM

This A-Tech module is a 4 GB DDR3 1866 ECC UDIMM designed for server and workstation systems. It operates at PC3-14900 speed with a CL13 latency and standard 1.5 V. The single 240-pin DIMM uses a 2Rx8 organisation and major-brand chips for dependable operation.

IT professionals maintaining DDR3 platforms

System administrators upgrading compatible Samsung M391B5273DH0-CMA slots will find a direct replacement here. Builders who require registered DIMMs, higher densities per module, or non-ECC memory for consumer boards should look elsewhere.

ECC UDIMM with 2Rx8 organisation

The module is an unbuffered ECC DIMM built with a dual-rank 2Rx8 layout. This specific rank configuration and error-correcting capability determine whether the memory will initialise correctly in your server or workstation motherboard.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 95% of the 6,523 comparable items (median $188.99).
Total capacity 4 GB
Lower than about 95% of the 6,064 comparable items (median 32 GB).
Price per GB $5.00 per GB
Cheaper than about 73% of the 6,064 comparable items (median $7.25 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 nameA-Tech
Total capacity4 GB
Performance
Rated speedDDR3 1866 (PC3 14900)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL13
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.5 V

Questions about this item

What motherboard slot and voltage does this 240-pin DDR3 ECC UDIMM require?

It fits a standard DDR3 DIMM socket and operates at 1.5 V, the default voltage for DDR3 1866 modules.

Will this 1866 MHz CL13 module run stably alongside slower DDR3 DIMMs already in my server?

The memory controller will set a common speed and the loosest timings across all populated slots, so mixed speeds are supported but the faster module will run at the lower rate.

How can I confirm the module is detected as 4 GB ECC at 1866 MHz after installation?

Check the BIOS memory summary or run a tool such as dmidecode or CPU-Z; it should report 4 GB, ECC enabled, 1866 MT/s and CL13 timings.

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