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A green circuit board with black memory chips and gold edge connectors

Computer Memory Solutions

Computer Memory Solutions CM1024642400SO 8GB DDR4 2400 SODIMM Lenovo ThinkPad L390 20NRxxx Series C106

SKU CH-1HG5-8VJJH

An 8 GB DDR4 2400 MHz SODIMM module rated CL17 at 1.2 V, built for Lenovo ThinkPad L390 20NRxxx series laptops

  • Total capacity8 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 8GB capacity boosts multitasking headroom for ThinkPad L390
  • DDR4 2400 speed matches factory memory spec exactly
  • CL17 timing keeps latency low at standard voltage
  • 260-pin SODIMM form factor fits the laptop slot directly
  • Guaranteed compatibility with Lenovo 20NRxxx series systems

System-specific upgrade for ThinkPad L390

This 8 GB DDR4 SO-DIMM is built to match the Lenovo ThinkPad L390 20NRxxx series. It installs as a single 260-pin module running at 2400 MHz with CL17 timing and 1.2 V unbuffered operation. The kit suits owners who need a direct, brand-tested memory increase for that notebook line.

Verify slot count and current population

The L390 platform supports up to 32 GB across two SO-DIMM sockets. Confirm how many slots your unit has free and whether an existing stick already occupies one socket. This module is a 2Rx8 non-ECC part, so mixing with different ranks or ECC memory is not supported by the platform.

Single stick simplifies installation

The package contains only the memory module itself — no tools, adapters or software discs are included. Because Computer Memory Solutions validates each stick against the target system, the only practical change after fitting is the extra capacity; no driver updates or BIOS tweaks are required.

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
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).

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 ThinkPad L390 20NRxxx Series
In the box
Included items1Memory Ram Stick

Questions about this item

What comes in the box and is anything else needed to install this 260-pin DDR4 SODIMM?

The package contains one 8 GB memory module. No additional parts are required for installation in a compatible Lenovo ThinkPad L390.

Should I choose the CL17 2400 MHz version or a different speed for my ThinkPad L390?

This module runs at DDR4 2400 with CL17 timing, matching the specification for the 20NRxxx series. Select this version for guaranteed compatibility.

What does the 2400 MHz rating mean once the stick is inside a real ThinkPad L390?

The memory will operate at 2400 MT/s with 1.2 V, delivering PC4 19200 bandwidth in a dual-channel configuration up to the system maximum of 32 GB.

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