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Two green DDR3 SODIMM sticks with black chips, 204 pins each

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1600MHz SODIMM for Lenovo ThinkPad X131E (Intel) - A21

SKU CH-6FJ4-EKMNM

8 GB kit of two 4 GB DDR3 1600 MHz SODIMM modules for Lenovo ThinkPad X131E Intel laptops

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.5 V
  • 8GB kit (2×4GB) doubles capacity for Lenovo ThinkPad X131E (Intel)
  • DDR3 1600 MHz PC3-12800 matches system memory standard
  • CL11 11-11-11 timing with 1.5V operation meets platform requirements
  • 204-pin unbuffered non-ECC SODIMM fits both memory slots
  • Major-brand chipset modules backed by Computer Memory Solutions compatibility guarantee

Targeted upgrade kit

This 8 GB kit contains two 4 GB DDR3 SO-DIMM modules built for the Lenovo ThinkPad X131E (Intel) models 3367-xxx and 3368-xxx. It raises the system to its 8 GB maximum using the two available slots. Buyers needing more capacity or a different DDR generation cannot use this kit.

Speed and timing match

The modules run at DDR3 1600 (PC3 12800) with CL11 11-11-11 timing at 1.5 V, unbuffered and non-ECC. This exact speed and voltage combination is the single specification that decides whether the memory will operate correctly in the X131E.

Dual-module convenience

The package supplies both sticks in one box so the two slots are filled simultaneously for dual-channel operation. No additional software, cables or heat spreaders are included.

How it compares

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

Price $22.99
Cheaper than about 89% 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 $2.87 per GB
Cheaper than about 90% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126412800SODRH
Total capacity8 GB (2 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsLenovo Thinkpad X131E (Intel)
In the box
Included items2 Memory RAM Sticks

Questions about this item

What does 1600 MHz DDR3 mean for real-world responsiveness in a ThinkPad X131e?

The kit runs at DDR3-12800 with CL11 timing and 1.5 V, giving the X131e its maximum supported memory bandwidth for snappier multitasking and faster application loading.

How does the 204-pin SO-DIMM interface limit upgrade options on this laptop?

The X131e has two 204-pin DDR3 slots; this 2 × 4 GB kit fills both, reaching the 8 GB ceiling so no further memory can be added.

Will these modules physically fit and seat correctly in the X131e (Intel) chassis?

Yes — they are standard 204-pin DDR3 SO-DIMMs without heat spreaders, matching the exact form factor required by the 3367-xxx and 3368-xxx models.

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