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Two green DDR3 SODIMM sticks, bare circuit boards with gold contacts, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions CM5126412800SODRH 8GB (2x4GB) DDR3-1600 CL11 SODIMM

SKU CH-WR24-Y2ZWH

Two 4 GB DDR3-1600 SO-DIMM modules with CL11 timing for Lenovo ThinkPad X220 series

  • Capacity8GB (2 x 4GB)
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Timing11-11-11
  • Voltage1.5V
  • 8 GB dual-channel kit boosts multitasking on ThinkPad X220
  • DDR3-1600 CL11 timing delivers responsive 1.5 V operation
  • 204-pin SODIMM form factor fits X220 slots 4287, 4290, 4291
  • 2Rx8 rank organisation with major-brand chips ensures stable compatibility
  • Guaranteed compatible upgrade backed by CMS lifetime warranty

Lenovo ThinkPad X220 upgrade kit

This 8 GB kit provides two 4 GB DDR3 SO-DIMM modules rated at 1600 MHz with CL11 timing. It is built for the Lenovo ThinkPad X220 models 4287, 4290 and 4291. The unbuffered, non-ECC design matches the factory specification for those systems.

Low-voltage DDR3 operation

Each module runs at 1.5 V, the standard voltage for DDR3 SO-DIMM memory. The CL11 11-11-11 timings keep latency predictable during everyday workloads. No heat spreader is fitted, so the sticks rely on the notebook's internal airflow.

Two matched sticks included

The package contains two 204-pin SO-DIMM sticks pre-tested as a pair. Computer Memory Solutions validates compatibility for the listed ThinkPad models and backs the kit with a limited lifetime warranty against manufacturing defects.

Points forts

  • 8 GB dual-channel kit boosts multitasking on ThinkPad X220
  • DDR3-1600 CL11 timing delivers responsive 1.5 V operation
  • 204-pin SODIMM form factor fits X220 slots 4287, 4290, 4291
  • 2Rx8 rank organisation with major-brand chips ensures stable compatibility
  • Guaranteed compatible upgrade backed by CMS lifetime warranty

Caractéristiques

BrandComputer Memory Solutions
ModelCM5126412800SODRH
Capacity8GB (2 x 4GB)
Type204-Pin DDR3 SO-DIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Timing11-11-11
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemLenovo ThinkPad X220 4287, 4290, 4291
Package Content2 Memory RAM Sticks

Questions sur cet article

How do I install these 204-pin DDR3 SODIMM modules in a ThinkPad X220, and which step do people often miss?

Power off the laptop, remove the battery, open the memory door, insert each 4 GB stick at a 30° angle until the gold contacts disappear, then press down firmly until both side clips click — the step most people miss is pressing down hard enough to engage both clips.

What maintenance or replacement will this 2 x 4 GB kit need over time?

No routine maintenance is required; the modules have no heat spreader and run at 1.5 V, so only replace them if a memory test reports errors or you upgrade to a higher-capacity kit.

What limit appears first when the ThinkPad X220 runs sustained workloads with this CL11 1600 MHz memory?

The platform’s two-slot maximum of 8 GB is reached immediately with this kit, so capacity — not bandwidth or latency — becomes the first bottleneck under heavy multitasking.

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