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Green rectangular DDR4 SODIMM module with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions 4GB DDR4-2400 SODIMM CL17 ThinkPad P51s/P52s/T470/T470p

SKU CH-22BC-C99RF

4GB DDR4 2400 MHz SODIMM module for compatible ThinkPad P51s, P52s, T470 and T470p 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 for compatible ThinkPads
  • DDR4-2400 speed delivers 19200 MT/s bandwidth for faster data throughput
  • CL17 latency with 17-17-17 timing keeps access delays low
  • 2V operation reduces power draw and heat in slim chassis
  • 260-pin SODIMM fits P51s, P52s, T470 and T470p slots directly

4GB DDR4-2400 SODIMM for ThinkPad

This 4GB DDR4-2400 SODIMM module is built for Lenovo ThinkPad P51s, P52s, T470 and T470p notebooks. It runs at 2400MHz with CL17 timing and operates at 1.2V. The unbuffered, non-ECC design uses a 260-pin form factor and 2Rx8 organisation. It is aimed at owners of those specific models who need a straightforward capacity increase.

Upgrade from 4GB or 8GB factory configurations

The jump makes sense when the system ships with a single 4GB stick or two 4GB sticks leaving no free slot. Adding this 4GB module brings total memory to 8GB or 12GB depending on the starting point. The 32GB maximum across two sockets means a second 4GB module can be added later if a slot remains open.

Suits ThinkPad P51s, P52s, T470.

Buyers who want more than 12GB total capacity or who need ECC error correction should look elsewhere. The module is not compatible with laptops outside the listed ThinkPad families. Systems requiring registered or buffered memory cannot use this stick.

How it compares

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

Price $21.99
Cheaper than about 89% 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 $5.50 per GB
Cheaper than about 70% of the 20,941 comparable items (median $8.19 per GB).

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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 Thinkpad P51s, P52s, T470, T470p
In the box
Included items1Memory Ram Stick

Questions about this item

Does this 260-pin DDR4 SODIMM fit the memory slot in a ThinkPad T470p?

Yes, the module is a 260-pin DDR4 SO-DIMM built for the ThinkPad P51s, P52s, T470 and T470p platforms listed in the compatibility data.

What is the correct way to seat this 260-pin stick, and what step do people often miss?

Slide the module into the slot at an angle until the gold contacts are no longer visible, then press down evenly until the two side clips snap into the notches; the step often missed is pushing both ends simultaneously so the clips engage together.

Will this 4GB CL17 module need any firmware updates or component swaps during its service life?

No firmware or driver updates are required for the memory itself, and the stick carries a limited lifetime warranty from Computer Memory Solutions against manufacturing defects.

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