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 circuit board 240-pin DDR3L RDIMM module with black memory chips

A-Tech

A-Tech 16GB DDR3L 1066 ECC RDIMM 4Rx4 Server Memory

SKU CH-WA03-6RFYV

16GB DDR3L 1066MHz ECC registered server memory with 4Rx4 organisation and 1.35V low voltage

  • Total capacity16 GB
  • Rated speedDDR3L 1066 (PC3L 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • 16GB capacity expands server memory for heavier workloads
  • DDR3L 1066MHz speed delivers reliable data throughput
  • ECC registered design detects and corrects memory errors
  • 35V low voltage reduces power draw and heat
  • 240-pin DIMM form factor fits standard server slots

16GB DDR3L 1066 ECC RDIMM Server Module

This is a single 16GB DDR3L 1066 ECC Registered DIMM built for server and workstation platforms. It operates at 1.35V with CL7 latency and uses a 4Rx4 rank configuration on a 240-pin interface. The module is validated as a direct replacement for Samsung M393B2K70CM0-YF8 and equivalent part numbers. It targets administrators who need registered ECC memory to maintain data integrity in multi-slot configurations.

Suits registered ECC DDR3L 1066 systems only

This module fits servers that require DDR3L 1066 registered ECC DIMMs with 4Rx4 organisation and 1.35V operation. It will not work in desktops or laptops that accept only unbuffered non-ECC memory. It is also incompatible with platforms limited to DDR3 1.5V or higher voltage modules. Buyers needing unbuffered ECC or consumer SO-DIMM form factors should look at other products.

4Rx4 rank density decides motherboard slot support

The 4Rx4 organisation means each module presents four logical ranks to the memory controller. Many server boards limit the number of ranks per channel, so installing multiple 4Rx4 DIMMs can exceed that limit and prevent the system from posting. Verify the platform's maximum ranks per channel and qualified vendor list before purchasing.

How it compares

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

Price $27.99
Cheaper than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $1.75 per GB
Cheaper than about 94% 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 capacity16 GB
Performance
Rated speedDDR3L 1066 (PC3L 8500)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Power
Rated voltage1.35 V

Questions about this item

Will this DDR3L 1066 CL7 1.35V 4Rx4 RDIMM run reliably alongside existing DDR3L 1066 modules in my server?

Yes — matching speed, voltage, CAS latency, rank layout and registered ECC design lets it operate in the same channel without timing conflicts.

How can I confirm the module is detected at 1066 MHz with ECC active after installation?

Check the BIOS memory summary or run dmidecode / CPU-Z; they should show 1066 MHz, 1.35 V, ECC enabled and registered operation.

Does the package include only the single 240-pin DIMM or are any brackets or cables supplied?

Only the 16 GB 240-pin DDR3L RDIMM is included; no brackets, cables or additional hardware are provided.

More in ECC Server RAM

Similar items