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Green circuit board with black memory chips, 260-pin DDR4 SODIMM module

Computer Memory Solutions

Computer Memory Solutions 8GB DDR4 2400MHz SODIMM CL17 1.2V Lenovo IdeaPad C340 S145

SKU CH-R4C8-7VXAB

8GB DDR4 2400 MHz SODIMM module adds memory to compatible Lenovo IdeaPad C340 and S145 laptops

  • Total capacity8 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 8 GB module lifts multitasking headroom for IdeaPad C340 and S145
  • DDR4 2400 MHz CL17 timing keeps data flowing at PC4‑19200 speed
  • 2 V low‑voltage design reduces power draw and heat
  • 260‑pin SODIMM form factor fits the single laptop slot directly
  • Lifetime repair or exchange warranty from Computer Memory Solutions

8GB DDR4 2400MHz SODIMM for Lenovo IdeaPad

This module adds 8GB of DDR4 memory running at 2400MHz with CL17 latency. It is built as a 260-pin unbuffered non-ECC SODIMM operating at 1.2V. The kit contains a single stick intended for compatible Lenovo IdeaPad C340 and S145 laptops.

Check your laptop model and free slot count

Verify that your device is a Lenovo IdeaPad C340-14IWL, C340 (14) Series, C340-15IWL, C340 (15) Series or S145-15AST. The system has one memory socket, so this module will replace any existing stick rather than sit alongside it. A 64-bit operating system is required to address more than 4GB.

Suits owners of listed IdeaPad models needing

Users who want to keep an existing module and add a second one cannot do so because only one socket is present. Buyers needing ECC, registered memory or speeds above 2400MHz should look elsewhere. The module is not compatible with laptops outside the specified Lenovo series.

How it compares

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

Price $38.99
Cheaper than about 81% 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 $4.87 per GB
Cheaper than about 78% 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 nameCM1024642400SO
Total capacity8 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo IdeaPad C340-14IWL, C340 (14) Series, C340-15IWL, C340 (15) Series, S145-15AST
In the box
Included items1 Memory RAM Stick

Questions about this item

What comes in the package and is anything else needed to install this 8 GB DDR4 2400 MHz SODIMM?

The box contains one 8 GB 260-pin DDR4 SODIMM module. No extra parts are required; the stick fits directly into the laptop's memory slot.

Should I choose this single 8 GB stick or look for a different capacity for my Lenovo IdeaPad C340 or S145?

This module adds 8 GB. The supported models accept up to 16 GB, 20 GB or 24 GB total depending on the specific chassis, so you can add a second stick later if the laptop has a free slot.

Will the CL17 2400 MHz rating deliver that speed once installed in my IdeaPad C340-14IWL?

The module runs at 2400 MHz CL17 at 1.2 V. If the processor or existing memory is slower, the system will clock all modules down to the lowest common speed.

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