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Two green DDR3L SO-DIMM sticks with black chips

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR3L 1600 SO-DIMM for Lenovo Essential Z40-70 Notebook

SKU CH-65X7-A7QXR

A 16 GB (2 × 8 GB) DDR3L 1600 SO-DIMM kit with CL11 timing and 1.35 V operation for the Lenovo Essential Z40-70 notebook

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.35 V
  • 16 GB dual-channel kit ready for Lenovo Z40-70
  • DDR3L 1600 speed at 1.35 V for low power draw
  • CL11 11-11-11 timing delivers responsive multitasking
  • 204-pin SO-DIMM form factor fits both expansion slots
  • Major-brand chips with lifetime warranty from CMS

Target Notebook Upgrade

This kit delivers 16 GB of DDR3L memory in two 8 GB SO-DIMM modules built specifically for the Lenovo Essential Z40-70 notebook. It suits owners who want to reach the system's maximum supported capacity with a matched pair that installs directly into the two available slots.

DDR3L 1600 Interface Limit

The modules run at 1600 MHz with CL11 timings at 1.35 V, matching the DDR3L 12800 standard the notebook's memory controller expects. Higher-speed DDR3 or standard 1.5 V DDR3 modules will not operate correctly in this platform, so this specification is the hard ceiling for compatibility.

2Rx8 Dual-Rank Configuration

Each stick uses a 2Rx8 organisation, giving the memory controller the dual-rank density it requires to address the full 16 GB across both sockets. Single-rank or quad-rank alternatives would either halve the usable capacity or fail to initialise on this specific motherboard.

How it compares

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

Price $34.99
Cheaper than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $2.19 per GB
Cheaper than about 93% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM10246412800SODRL
Total capacity16 GB (2 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsLenovo Essential Z40-70 Notebook
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I choose the 16GB kit or a smaller capacity for my Lenovo Essential Z40-70?

The Z40-70 supports a maximum of 16GB across two sockets, so this 2x8GB kit fills both slots and reaches the notebook's full memory limit.

What does the 1600MHz speed rating mean once the modules are installed?

The DDR3L 1600 (PC3L 12800) modules run at 1600MHz with CL11 timing at 1.35V, delivering the rated bandwidth the notebook's memory controller expects.

Will the 204-pin DDR3L SO-DIMM interface work without changes in my Z40-70?

Yes, the 204-pin DDR3L SO-DIMM form factor matches the Z40-70's two memory sockets exactly; the unbuffered, non-ECC design is what the notebook requires.

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