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Green rectangular DDR3 DIMM module with black memory chips and gold contacts

A-Tech

A-Tech 4GB DDR3 1600MHz ECC UDIMM 1Rx8 Server Memory

SKU CH-G3E7-TJ65X

A 4GB DDR3 1600MHz ECC UDIMM module with CL11 latency and 1.5V operation for server and workstation upgrades

  • Total capacity4 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetSamsung Chipset
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • ECC protection safeguards data integrity in server workloads
  • 1600 MHz DDR3 speed delivers responsive performance for demanding tasks
  • Unbuffered 1Rx8 design ensures broad server compatibility
  • 5 V standard voltage matches DDR3 platform requirements
  • 240-pin DIMM form factor fits standard server memory slots

Server DDR3 ECC UDIMM

This 4 GB DDR3 1600 MHz ECC unbuffered DIMM is built for servers and workstations that require error-correcting memory. It runs at 1.5 V with CL11 latency and uses a 1Rx8 Samsung chipset on a 240-pin module.

Compatibility fit

It suits administrators replacing a Samsung M391B5173QH0-CK0 module or adding ECC capacity to a DDR3 platform that accepts unbuffered DIMMs. Builders needing registered memory, higher density modules, or a newer DDR generation should look elsewhere.

Installation notes

The module installs like any standard DDR3 DIMM: align the notch, press until the latches click, and verify the system recognises the full capacity. The most common issue is mixing registered and unbuffered DIMMs, which prevents the server from posting.

How it compares

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

Price $15.99
Cheaper than about 97% 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 $4.00 per GB
Cheaper than about 81% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Samsung
Model nameM391B5173QH0-CK0
Total capacity4 GB
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL11
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Power
Rated voltage1.5 V

Questions about this item

Does this 240-pin DDR3 UDIMM fit a motherboard with DDR3 1.50V slots?

Yes, the module is a 240-pin DDR3 UDIMM rated at 1.50V, matching standard DDR3 DIMM sockets that operate at 1.5V.

Will this CL11 1Rx8 stick run in a server that already has CL9 2Rx4 modules?

The module runs at DDR3 1600 with CL11 timing; the system will typically down-clock all sticks to the slowest common speed and latency.

How can I confirm the 4GB module is detected as ECC UDIMM at 1600 MHz after install?

Check the BIOS memory info or run a tool such as dmidecode or CPU-Z; it should report 4GB, DDR3 1600, ECC unbuffered, 1Rx8.

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