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Green rectangular DDR3L server DIMM with gold edge connectors and black memory chips

A-Tech

A-Tech 4GB DDR3L 1333MHz ECC RDIMM 2Rx8 1.35V Server Memory

SKU CH-F5T1-8KY2S

4GB DDR3L 1333MHz ECC registered server module with 2Rx8 organisation, 1.35V operation and CL9 latency

  • Total capacity4 GB
  • Rated speedDDR3L 1333 (PC3L 10600)
  • ChipsetMicron Chipset
  • CAS latencyCL9
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • ECC protection prevents data errors with registered DDR3L 1333MHz design
  • Low 1.35V voltage reduces power draw and heat in servers
  • 4GB capacity adds memory headroom for multi-tasking workloads
  • 2Rx8 dual-rank layout optimises bandwidth on 240-pin DIMM
  • Tested compatible replacement for Micron MT18KSF51272PDZ series modules

Server memory upgrade

This 4GB DDR3L module is a direct replacement for Micron MT18KSF51272PDZ series RDIMMs. It targets administrators maintaining servers or workstations that require registered ECC memory at 1333MHz.

240-pin registered DIMM

The stick uses a standard 240-pin DDR3 DIMM form factor with a 2Rx8 organisation. Registered buffering and on-board ECC reduce electrical load on the memory controller and correct single-bit errors, which is essential for multi-module server configurations.

Lifetime warranty and US support

A-Tech backs the module with a lifetime warranty and provides United States-based technical assistance before and after installation. Every unit is tested to meet the original Micron specifications for voltage, timing and chipset compatibility.

How it compares

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

Price $16.99
Cheaper than about 96% 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 $4.25 per GB
Cheaper than about 79% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Micron
Model nameMT18KSF51272PDZ-1G4D1, MT18KSF51272PDZ-1G4K1, MT18KSF51272PDZ-1G4M1FE, MT18KSF51272PDZ-1G4M1FF
Total capacity4 GB
Performance
Rated speedDDR3L 1333 (PC3L 10600)
Processor
ChipsetMicron Chipset
Memory
CAS latencyCL9
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Power
Rated voltage1.35 V

Questions about this item

What speed does the DDR3L 1333 interface actually run at in a server?

The module operates at 1333 MHz (PC3L-10600) with CL9 latency; the registered buffer adds one cycle so the memory controller sees the rated 1333 MT/s once the BIOS enables the correct XMP or JEDEC profile.

Will the 240-pin RDIMM fit my motherboard's DIMM slots?

This is a 240-pin DDR3L RDIMM; it only fits DDR3 DIMM slots keyed for registered modules — desktop UDIMM slots have a different notch position and will not accept it.

How do I install the module and what step is often missed?

Power down, open the chassis, align the notch with the slot key, press firmly until both latches click, then enter the BIOS to confirm the 1.35 V setting and enable ECC — skipping the BIOS voltage check is the common mistake.

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