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Green circuit board with black memory chips, 260-pin SO-DIMM form factor

Computer Memory Solutions

Computer Memory Solutions CM512642400SO 4GB DDR4 2400 CL17 1.2V 2Rx8 SO-DIMM memory upgrade

SKU CH-2R4D-9QC35

4 GB DDR4 2400 CL17 SO-DIMM built for Lenovo Legion Y520 and Y720 laptops

  • Capacity4GB
  • Type260-Pin DDR4 SO-DIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Timing17-17-17
  • Voltage1.2V
  • 4GB capacity adds responsive multitasking headroom
  • 2400 MHz DDR4 speed keeps data flowing smoothly
  • CL17 latency delivers snappy application response
  • 2V operation reduces power draw and heat
  • 2Rx8 dual-rank layout maximises memory bandwidth

4GB DDR4 2400 SO-DIMM for Lenovo Legion

This 4GB module uses 260-pin DDR4 SO-DIMM form factor and runs at 2400MHz with CL17 timing at 1.2V. It is an unbuffered, non-ECC stick built with 2Rx8 organisation and major brand chips. The part is validated for Lenovo Legion Y520 and Y720 laptops.

Suits single-slot upgrades on Y520 or Y720

Buyers adding memory to a compatible Legion laptop with a free socket can install this kit directly. It will not suit systems that require ECC or registered memory, nor desktops needing full-size DIMMs. Users whose device has both slots filled must remove an existing module first.

Speed rated at DDR4 2400 PC4 19200

The module operates at 2400MHz with 17-17-17 latency, matching the factory specification for the listed Legion models. If your BIOS or platform limits memory to a lower speed, the stick will downclock automatically. Verify the laptop model number before ordering.

Highlights

  • 4GB capacity adds responsive multitasking headroom
  • 2400 MHz DDR4 speed keeps data flowing smoothly
  • CL17 latency delivers snappy application response
  • 2V operation reduces power draw and heat
  • 2Rx8 dual-rank layout maximises memory bandwidth

Specifications

BrandComputer Memory Solutions
ModelCM512642400SO
Capacity4GB
Type260-Pin DDR4 SO-DIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Timing17-17-17
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemLenovo Legion Laptop Y520, Y720
Package Content1Memory Ram Stick

Questions about this item

What comes with the CM512642400SO module?

The package includes one 4 GB DDR4 2400 CL17 1.2 V 2Rx8 SO-DIMM stick. No tools or cables are included.

Which version suits a Lenovo Legion Y520 or Y720 with two slots and a 32 GB maximum?

This 4 GB stick is sold as a single module; add a second identical stick to reach 8 GB or fill both slots for the full 32 GB limit.

What does the 2400 MHz rating deliver inside a Legion Y520 or Y720?

The module runs at DDR4-2400 (PC4-19200) with CL17 timing at 1.2 V, giving the rated bandwidth and latency when the laptop memory controller is set to that speed.

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

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