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Green 260-pin DDR4 SODIMM memory module with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM5126417000SO 4GB DDR4 2133MHz SODIMM

SKU CH-TCS5-QPV3W

4GB DDR4 SODIMM running at 2133 MHz with CL15 timing, built for Dell XPS 15 9550 laptops

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Memory timings15-15-15
  • Rated voltage1.2 V
  • 4GB capacity adds responsive multitasking headroom for Dell XPS 15 9550
  • DDR4 2133MHz speed matches factory specification for stable operation
  • CL15 15-15-15 timing delivers low-latency data access
  • 2V unbuffered design runs cool without extra power draw
  • 260-pin SODIMM form factor fits directly into the laptop memory slot

Compatible Dell XPS 15 9550 Upgrade

This 4 GB DDR4 SODIMM module is built for the Dell XPS 15 9550 laptop. It delivers a straightforward capacity increase for owners of that specific system. The single stick fits one of the two available slots and supports the platform's maximum of 32 GB total memory.

260-Pin Unbuffered Layout

The stick uses a standard 260-pin SO-DIMM edge connector with no heat spreader, keeping the profile low for tight laptop bays. Unbuffered, non-ECC organisation and a single-rank 1Rx8 layout mean it drops straight into the factory socket without configuration changes. One module ships in the package.

1.2 V Operation at 2133 MHz

Rated at DDR4 2133 (PC4-17000) with CL15 15-15-15 timings, the module runs at the JEDEC-standard 1.2 V. Low voltage and the absence of a spreader keep thermals modest inside the slim chassis. Power draw stays minimal during typical workloads, helping battery life and acoustic profile.

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 nameCM5126417000SO
Total capacity4 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
Memory timings15-15-15
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell XPS 15 Laptop (9550)
In the box
Included items1 Memory RAM Stick

Questions about this item

What speed does the DDR4 2133 MHz SODIMM actually run at in the Dell XPS 15 9550?

The module is rated at DDR4 2133 (PC4 17000) and will operate at that speed if the laptop's memory controller supports it; otherwise it downclocks to the highest speed the platform allows.

Will the 260-pin SODIMM fit the Dell XPS 15 9550's memory slots?

Yes, the stick uses the standard 260-pin DDR4 SO-DIMM form factor that matches the two slots in the XPS 15 9550.

How do I install the module and what common mistake should I avoid?

Power off the laptop, open the bottom cover, align the notch on the 260-pin SODIMM with the slot key, insert at an angle and press down until the side clips click; the frequent error is not pushing firmly enough so the clips do not latch.

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