We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL3
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • 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.

How it compares

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

Price $18.99
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 $4.75 per GB
Cheaper than about 75% 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
Product lineCompatible Replacement for Crucial
Model nameCT51272BA1067
Total capacity4 GB
Performance
Rated speedDDR3 1066 (PC3 8500)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL3
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.5 V

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.

More in ECC Server RAM

Similar items