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Green circuit board with black memory chips and gold edge connector

A-Tech

A-Tech 4GB DDR3 1333 PC3-10600 ECC UDIMM 2Rx8 1.5V 240-Pin Server Memory

SKU CH-4X80-3SCQ9

A 4 GB DDR3 1333 ECC unbuffered DIMM with 2Rx8 organisation and 1.5 V operation for server upgrades

  • Total capacity4 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • ECC protection prevents data errors in critical workloads
  • 1333 MHz DDR3 speed handles demanding server tasks
  • 2Rx8 dual-rank organisation increases memory density per slot
  • 5 V standard voltage ensures broad platform compatibility
  • 240-pin UDIMM form factor fits standard server motherboards

4GB DDR3 1333 ECC UDIMM for servers

This 4GB DDR3 1333 ECC UDIMM module is built for servers and workstations that require error-correcting unbuffered memory. It operates at PC3-10600 speed with CL9 latency and standard 1.5V voltage. The single 240-pin DIMM uses a 2Rx8 organisation and major-brand chips. It serves as a direct replacement for the listed Hynix part numbers.

Simple DIMM installation with ECC verification

Installation follows standard DDR3 DIMM procedure: power down, open the chassis, align the notch on the 240-pin edge connector, and press firmly until the retention clips lock. The module is unbuffered, so no register timing adjustments are needed. The most common issue is a motherboard that disables ECC in the BIOS or requires matched pairs for multi-channel operation, which a single stick cannot satisfy.

Verify DDR3 ECC UDIMM support before ordering

Confirm that your system accepts DDR3 ECC unbuffered DIMMs at 1333 MHz and 1.5V. Check the maximum capacity per slot and the total number of 240-pin slots available. Ensure the platform supports 2Rx8 rank organisation and does not require registered or load-reduced modules. Buyers needing higher densities, registered ECC, or a different DDR generation should look elsewhere.

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 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.5 V

Questions about this item

How can I confirm the module is running at 1333 MHz with ECC after installation?

Check the system BIOS or UEFI to verify the reported speed and ECC status, then run a memory diagnostic tool to validate stability.

What comes in the box and do I need any extra parts to install this memory?

The package includes one 4GB DDR3 1333 ECC UDIMM module; no additional components are required for installation in a compatible 240-pin DIMM slot.

Which version should I choose if my server uses Hynix HMT351U7AFR8C-H9 modules?

This A-Tech 4GB DDR3 1333 ECC UDIMM 2Rx8 1.5V module is a compatible equivalent for Hynix HMT351U7AFR8C-H9, HMT351U7BFR8C-H9, HMT351U7CFR8C-H9, and HMT351U7EFR8C-H9.

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