We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • Total capacity4 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 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.

How it compares

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

Price $19.99
Cheaper than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.00 per GB
Cheaper than about 77% 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 nameCM512642400SO
Total capacity4 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 Legion Laptop Y520, Y720
In the box
Included items1Memory 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.

More in Model-Specific Memory Upgrades

Similar items