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Two green circuit boards with black memory chips and gold edge connectors

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR4 2666MHz CL19 SODIMM memory upgrade

SKU CH-8M6F-SBXFT

16 GB DDR4 SODIMM kit (2×8 GB, 2666 MHz, CL19) validated for Dell Latitude 14 5491, Vostro 15 7580 and XPS 15 9570

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • 16 GB dual-channel kit doubles capacity for Dell Latitude 14 (5491) and Vostro 15 (7580)
  • DDR4 2666 MHz CL19 timing matches factory spec for XPS 15 (9570)
  • 2 V unbuffered SODIMM draws standard laptop power without extra cooling
  • 260-pin non-ECC modules install directly into both available memory slots
  • Major-brand chipset validated for lifetime exchange against manufacturing defects

Dell Latitude 5491 Vostro 7580 XPS 9570 upgrade

This 16 GB kit contains two 8 GB DDR4 SODIMM modules rated at 2666 MHz with CL19 timing. It is built for the Dell Latitude 14 (5491), Vostro 15 (7580) and XPS 15 (9570) and runs at the standard 1.2 V without ECC or buffering.

Replaces factory 8 GB or 4 GB sticks

The kit fills both SODIMM slots in the supported notebooks, doubling the common 8 GB factory configuration. The jump is worth it when the workload regularly exceeds the original capacity and the system can address the full 16 GB across two ranks.

Handles 16 GB across two slots

The notebooks accept a maximum of 32 GB, so this kit leaves one upgrade step open if 32 GB becomes necessary. It runs out when the platform limit of 32 GB is reached or when an application demands more than the two installed modules can provide.

How it compares

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

Price $86.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.44 per GB
Cheaper than about 71% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM1024642666SO
Total capacity16 GB (2 × 8 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
Memory timings19-19-19
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell Latitude 14 (5491) Vostro 15 (7580), XPS 15 (9570)
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 260-pin DDR4 SO-DIMM modules fit the two SODIMM slots in my Dell Latitude 14 5491?

Yes, the kit is built for the Latitude 14 5491, Vostro 15 7580 and XPS 15 9570, each of which uses two 260-pin DDR4 SO-DIMM sockets.

What is the correct way to seat the modules so they lock into the 260-pin slots?

Insert each stick at a 30-degree angle until the gold contacts disappear, then press down firmly until both side clips click into the notches on the PCB.

When should I consider replacing one of the 8 GB sticks in this 16 GB kit?

Replace a module if the system fails to boot, shows repeated memory errors in diagnostics, or becomes unstable after the limited lifetime warranty period begins.

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