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Two green circuit boards with gold edge connectors and black memory chips

Computer Memory Solutions

Computer Memory Solutions CM512648500SODRH 8GB (2x4GB) DDR3 1066MHz SODIMM

SKU CH-SMXV-4H8H5

8GB DDR3 SODIMM kit (2×4GB, 1066 MHz, CL7) validated for Lenovo ThinkPad X201I 3249‑xxx laptops

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 8GB dual-channel kit enables full 8GB system capacity
  • 1066 MHz DDR3 speed matches PC3-8500 specification for ThinkPad X201i
  • CL7 7-7-7 timing delivers responsive memory performance
  • 5 V unbuffered non-ECC modules install directly in 204-pin SODIMM slots
  • Guaranteed compatibility with Lenovo ThinkPad X201i 3249-xxx series

System-specific upgrade

This 8 GB kit contains two 4 GB DDR3 SODIMM modules rated at 1066 MHz with CL7 timing. The sticks are unbuffered, non-ECC and operate at 1.5 V using a 204-pin layout. Computer Memory Solutions validates the kit for the Lenovo ThinkPad X201I 3249-xxx series.

Suited for X201I owners

The matched pair restores the factory two-slot configuration up to the platform maximum of 8 GB. Buyers whose notebooks require a different pin count, voltage or DDR generation cannot use this kit. Laptops limited to a single module or a lower total capacity should look elsewhere.

Speed and pin count decide fit

The modules run at PC3-8500 (1066 MHz) on a 204-pin SO-DIMM interface. If the target system demands a different speed grade or pin arrangement the memory will not seat or boot. Verify the service manual lists DDR3 1066 MHz 204-pin SODIMM before ordering.

How it compares

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

Price $36.99
Cheaper than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $4.62 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 capacity8 GB (2 × 4 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 X201I 3249-Xxx Series
In the box
Included items2 Memory RAM Sticks

Questions about this item

What comes in the box and is anything else needed?

The package contains two 4 GB DDR3 SO-DIMM modules for a total of 8 GB; no extra parts are required for installation in the ThinkPad X201i.

Which capacity or kit version should I choose?

This is the only kit offered — a matched pair of 4 GB sticks giving 8 GB total, which matches the system's two-slot 8 GB maximum with a 64-bit OS.

What does the 1066 MHz rating mean once installed?

The modules run at 1066 MHz with CL7 timing at 1.5 V; the X201i memory controller will operate them at this speed.

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