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Green circuit board SODIMM module with black memory chips, 204-pin DDR3 1066MHz 4GB laptop memory upgrade

Computer Memory Solutions

Computer Memory Solutions 4GB DDR3 1066MHz SODIMM CM512648500SODRH memory upgrade

SKU CH-FEZ4-CXHQC

4GB DDR3 1066MHz SODIMM module for Lenovo ThinkPad X201 series laptops

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4GB capacity upgrades Lenovo ThinkPad X201 series
  • DDR3 1066MHz speed matches PC3-8500 specification
  • CL7 CAS latency with 7-7-7 timing
  • 204-pin SODIMM form factor fits laptop slots
  • 5V unbuffered non-ECC module with 2Rx8 rank

Compatible Lenovo ThinkPad Upgrade

This 4GB DDR3 SODIMM is built for Lenovo ThinkPad X201, X201 Tablet, X201I and X201S laptops. It installs directly into the 204-pin slot without configuration changes. The module runs at 1066MHz with CL7 timing at 1.5V. It adds a single 4GB stick to a supported system.

Who Should Look Elsewhere

Buyers whose laptop is not among the four listed ThinkPad models cannot rely on guaranteed compatibility. Systems that require ECC or registered memory will not work with this unbuffered non-ECC stick. Machines limited to a lower maximum module capacity or a different DDR generation will not accept this upgrade.

The Deciding Specification

The module is a 204-pin DDR3 SODIMM rated at PC3-8500 1066MHz. Only laptops that explicitly support this pin count, voltage and speed will boot correctly with it installed.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.50 per GB
Cheaper than about 81% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512648500SODRH
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
Memory timings7-7-7
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsLenovo Thinkpad X201, X201 Tablet, X201I, X201S
In the box
Included items1 Memory RAM Stick

Questions about this item

Does this 204-pin DDR3 SODIMM need a Lenovo ThinkPad X201 series laptop to work?

Yes — it is validated for the X201, X201 Tablet, X201i and X201s models listed in the compatibility data.

Will this CL7 1066 MHz module run reliably if the laptop also has a CL9 1333 MHz stick installed?

The system will clock both modules to the lowest common speed and latency, so the faster stick simply operates at the slower stick's settings.

How can I confirm the stick is detected at 4 GB after fitting it in the slot?

Open Task Manager or the BIOS memory screen; both should report 4 GB total capacity for the new module.

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