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

Computer Memory Solutions

Computer Memory Solutions CM1024642400SO 8GB DDR4 2400 CL17 260-pin SODIMM for ThinkPad T490

SKU CH-JK1Y-STK0Z

8GB DDR4 SODIMM module validated for Lenovo ThinkPad T490 compatibility at 2400 MHz CL17

  • Total capacity8 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 8 GB capacity expands ThinkPad T490 memory
  • DDR4 2400 MHz speed delivers 19200 MT/s bandwidth
  • CL17 timing at 1.2 V reduces latency
  • 260-pin SODIMM form factor fits single slot
  • Guaranteed compatibility with ThinkPad T490 system

8GB DDR4 2400 SODIMM for ThinkPad T490

This 8GB DDR4 module runs at 2400 MHz with CL17 timing and 1.2V operation. It uses a 260-pin SO-DIMM form factor built with a 2Rx8 rank configuration. The stick is designed specifically for the Lenovo ThinkPad T490 and carries a Computer Memory Solutions lifetime exchange warranty against manufacturing defects.

Sustained load behaviour

Under continuous workloads the memory operates at its rated 2400 MHz speed without downclocking, provided the processor and chipset support that frequency. All installed modules will run at the slowest module speed in the system, so mixing faster sticks will not raise performance. The unbuffered, non-ECC design delivers standard consumer reliability for typical office and multitasking scenarios.

Installation notes and common issues

Installation requires opening the laptop chassis and seating the module into the single available SODIMM slot; the keyed 260-pin connector prevents incorrect insertion. A 64-bit operating system is required to address the full 8GB capacity. Buyers who want more storage than a single 8GB stick provides cannot expand beyond this module because the system offers only one memory socket.

How it compares

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

Price $40.99
Cheaper than about 80% 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 $5.12 per GB
Cheaper than about 75% of the 20,941 comparable items (median $8.19 per GB).

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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 T490
In the box
Included items1 Memory RAM Stick

Questions about this item

Does the 1.2 V DDR4 2400 SODIMM run cooler than higher-voltage memory during all-day use?

Standard 1.2 V DDR4 modules generate less heat than older 1.35 V or 1.5 V sticks, so the CM1024642400SO stays cool under continuous load.

My ThinkPad T490 has only one SO-DIMM slot — will this single 8 GB stick work alone?

The T490 provides a single 260-pin DDR4 slot, so this 8 GB module installs directly without needing a matched pair.

If I keep the original 8 GB module and add this CL17 stick, what speed will both run at?

Mixed modules default to the slowest installed timing, so both will operate at DDR4 2400 CL17.

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