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Green rectangular DDR3 SODIMM circuit board with black memory chips and gold contacts

A-Tech

A-Tech 4GB DDR3 1066MHz PC3-8500 SODIMM Laptop RAM

SKU CH-F343-B78GB

4 GB DDR3 1066 MHz laptop SODIMM module with CL7 latency and 1.5 V operation

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • CAS latencyCL7
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Recommended forAMD & Intel Compatible
  • Boosts multitasking with 4GB DDR3 1066MHz capacity
  • CL7 latency sharpens system responsiveness
  • 50V standard voltage ensures stable operation
  • 204-pin SODIMM fits compatible laptop slots
  • Replaces Lenovo part numbers 41R0636 51J0493 51J0494 55Y3708 55Y3714

4GB DDR3 1066MHz SODIMM

This A-Tech module adds 4GB of DDR3 memory at 1066MHz (PC3-8500) to a laptop or all-in-one system. It uses the standard 204-pin SO-DIMM form factor and runs at 1.50V with CL7 latency. The stick is unbuffered, non-ECC and built with major-brand chips for broad AMD and Intel platform compatibility.

Suits owners of compatible IBM-Lenovo models

The module directly replaces Lenovo part numbers 41R0636, 51J0493, 51J0494, 55Y3708 and 55Y3714. Buyers needing more than 4GB of total memory or requiring ECC or registered DIMMs should look at other parts. Systems that do not accept 204-pin DDR3 SO-DIMMs cannot use this upgrade.

204-pin DDR3 SO-DIMM interface

The single specification that decides fitment is the 204-pin DDR3 SO-DIMM interface running at 1066MHz. If the laptop manual lists this exact form factor and speed, the module will install and operate at its rated CL7 timing.

How it compares

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

Price $18.99
Cheaper than about 89% of the 2,079 comparable items (median $70.99).
Total capacity 4 GB
Lower than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $4.75 per GB
Cheaper than about 70% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Memory
CAS latencyCL7
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.5 V
Compatibility
Recommended forAMD & Intel Compatible

Questions about this item

Should I pick the 4 GB module or look for a different capacity?

This listing is a single 4 GB DDR3 SODIMM; choose it if your laptop has a free 204-pin slot and the manufacturer qualifies 4 GB modules at 1066 MHz.

What does the 1066 MHz rating deliver in my laptop?

The module runs at 1066 MHz with CL7 latency at 1.5 V, giving the standard DDR3 1066 data rate your memory controller expects.

Is the PC3-8500 label tied to a specific interface or voltage limit?

PC3-8500 identifies DDR3 1066 on the 204-pin SO-DIMM interface at the standard 1.5 V unbuffered specification.

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