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Green 240-pin DDR3 UDIMM module with black memory chips and a silver label showing A-Tech branding

A-Tech

A-Tech 4GB DDR3 1066MHz ECC UDIMM 2Rx8 Server Memory

SKU CH-DKDG-X0WAQ

4GB DDR3 1066MHz ECC unbuffered DIMM module for server memory upgrades

  • Capacity4GB
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL3
  • Voltage1.50V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ECC protection guards data integrity for server workloads
  • DDR3 1066MHz PC3-8500 speed delivers responsive multitasking
  • 50V standard voltage ensures broad platform compatibility
  • 2Rx8 unbuffered DIMM architecture fits standard 240-pin slots
  • Lifetime warranty plus US-based tech support backs every module

Server memory upgrade

This 4GB DDR3 module runs at 1066MHz with PC3-8500 timing and CL3 latency. It operates at the standard 1.5V and uses an unbuffered ECC design with a 2Rx8 rank configuration. The 240-pin DIMM is built as a direct replacement for the Crucial CT51272BA1067 part number.

Suited for ECC UDIMM slots

It fits servers and workstations that accept DDR3 ECC unbuffered memory at this speed and voltage. Systems requiring registered or load-reduced modules cannot use this stick. Builders needing higher capacities or faster DDR3 speeds should look at other modules.

Steady throughput under load

The module maintains its rated 1066MHz frequency and CL3 timings during extended workloads thanks to standard-voltage operation and ECC error correction. Unbuffered architecture keeps latency consistent without the added register cycle of registered memory.

Highlights

  • ECC protection guards data integrity for server workloads
  • DDR3 1066MHz PC3-8500 speed delivers responsive multitasking
  • 50V standard voltage ensures broad platform compatibility
  • 2Rx8 unbuffered DIMM architecture fits standard 240-pin slots
  • Lifetime warranty plus US-based tech support backs every module

Specifications

BrandA-Tech
SeriesCompatible Replacement for Crucial
ModelCT51272BA1067
Capacity4GB
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL3
Voltage1.50V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
FeaturesCT51272BA1067

Questions about this item

Does my motherboard need 240-pin DDR3 slots to accept this ECC UDIMM?

Yes, this module uses the 240-pin DDR3 DIMM form factor and requires a motherboard with matching DDR3 slots.

Can I mix this CL3 1066 MHz stick with slower DDR3 modules already installed?

The system will run all modules at the speed and timings of the slowest stick, so slower DDR3 will work but overall bandwidth drops.

How can I confirm the ECC function is active after installation?

Check the BIOS or UEFI memory information screen — it should report ECC enabled and show the module running at 1066 MHz with CL3 timings.

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