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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM10246410600SODRH 8GB DDR3 1333 SODIMM Lenovo ThinkPad X220 4287 4290 4291

SKU CH-84EZ-QXA52

8GB DDR3 1333 SODIMM upgrade for Lenovo ThinkPad X220 models 4287, 4290 and 4291

  • Total capacity8 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 8GB capacity expands multitasking headroom on ThinkPad X220
  • DDR3-1333 speed matches factory memory specification
  • CL9 9-9-9 timing keeps latency low for responsive operation
  • 204-pin SODIMM form factor fits X220 4287, 4290, 4291 slots
  • 5V unbuffered non-ECC design installs without configuration changes

Compatible ThinkPad X220 upgrade

This 8 GB DDR3 SODIMM is built for the Lenovo ThinkPad X220 models 4287, 4290 and 4291. It delivers a single 8 GB module that fits the 204-pin slot used by those laptops. The part targets owners who want to reach the platform's maximum supported memory without mixing modules. Buyers with other ThinkPad generations or desktop systems cannot use this stick.

Standard voltage and latency

The module runs at 1.5 V with CL9 9-9-9 timings at 1333 MHz. Power draw follows the DDR3 SODIMM specification for this speed and voltage, so thermals stay within the laptop's original cooling design. No heat spreader is fitted, relying on the chassis airflow that the X220 already provides. Acoustic impact is zero because the memory has no moving parts.

Simple drop-in installation

The 204-pin SO-DIMM form factor matches the factory slot exactly, requiring no adapters or BIOS changes beyond the normal memory detection. A single stick leaves the second slot free for a matching module if the user wants dual-channel later. The unbuffered, non-ECC design suits the consumer chipset in these ThinkPads. Systems that require ECC, registered DIMMs or a different pin count will not accept this module.

How it compares

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

Price $24.99
Cheaper than about 88% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $3.12 per GB
Cheaper than about 89% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM10246410600SODRH
Total capacity8 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
Memory timings9-9-9
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsLenovo Thinkpad X220 4287, 4290, 4291
In the box
Included items1 Memory RAM Stick

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