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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM512642400SO 4GB DDR4 2400 CL17 1.2V SODIMM C105

SKU CH-S5S4-WG16M

4GB DDR4 2400 CL17 SODIMM for HP 15-bs series notebooks with dual slots

  • Total capacity4 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 4 GB capacity expands notebook memory for everyday multitasking
  • DDR4 2400 speed matches supported HP 15 series specifications
  • CL17 latency with 1.2 V operation keeps power draw low
  • 260-pin SODIMM form factor fits the two factory memory slots
  • Computer Memory Solutions tests each stick for guaranteed HP compatibility

HP 15-bs notebook upgrade

This 4 GB DDR4 SO-DIMM is built for HP 15-bs1xx and 15-bs2xx notebooks that use Intel Core i processors and have two SODIMM slots. It installs in a single 260-pin slot and runs at the standard 1.2 V.

DDR4-2400 dual-channel limit

The platform supports DDR4-2400 dual-channel operation with 5th and 8th generation Intel Core processors, while 6th and 7th generation parts top out at DDR4-2133 dual-channel. All installed modules run at the speed of the slowest module or the processor's memory controller.

4 GB module in 16 GB system

A single 4 GB stick leaves one slot free for a matching module to reach the 16 GB maximum supported by the two-slot design. Systems with only one accessible slot and Pentium Silver N5000 or Celeron N4000 processors are limited to 4 GB total in single-channel mode.

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).

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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 systemsHP/Compaq 15 Series 15-bs1xx, 15-bs2xx (Intel Core i, ) (w/2 SO) Notebook
In the box
Included items1Memory Ram Stick

Questions about this item

Should I buy the single 4 GB stick or look for an 8 GB module to reach the 16 GB maximum?

The notebook has two SODIMM slots and supports up to 16 GB total; a single 4 GB module leaves one slot free for a matching stick later, while an 8 GB module would fill half the maximum capacity immediately.

What does the DDR4‑2400 19200 rating deliver once installed in the HP 15‑bs1xx or 15‑bs2xx?

The module runs at 2400 MHz with CL17 timing at 1.2 V; the platform will operate it in dual‑channel mode when a second identical stick is present, otherwise it runs single‑channel at the same speed.

How does the 260‑pin SO‑DIMM interface limit performance in this laptop?

The 260‑pin DDR4 SO‑DIMM connects via the standard notebook memory bus; total system memory is capped at 16 GB across the two slots, and all installed modules run at the slowest module or processor capability.

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