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Two green DDR3L SODIMM sticks side by side

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR3L 1600MHz SODIMM for Dell XPS 15 (L521X) memory upgrade

SKU CH-1SPM-SA6ZT

16 GB DDR3L SODIMM pair upgrades the Dell XPS 15 L521X to its 16 GB maximum at 1600 MHz

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.35 V
  • 16 GB dual-channel kit boosts multitasking headroom
  • 35 V DDR3L reduces power draw and heat
  • CL11 1600 MHz timing matches Dell XPS 15 (L521X) spec
  • 204-pin SODIMM form factor fits both memory slots
  • Major-brand chips backed by CMS lifetime warranty

Dell XPS 15 L521X upgrade kit

This 16 GB kit contains two 8 GB DDR3L SODIMM modules rated at 1600 MHz with CL11 timings. They run at 1.35 V and use unbuffered, non-ECC chips in a 204-pin form factor. The set is built for the Dell XPS 15 L521X notebook.

Owners of a Dell XPS 15 L521X needing the maximum

The laptop has two slots and the manufacturer specifies that modules must be installed in matched pairs for dual-channel operation. Buyers whose system only accepts 1333 MHz memory or requires ECC registered DIMMs will not be able to use this kit. A 64-bit operating system is also required to address the full capacity.

1600 MHz DDR3L speed grade

The modules operate at PC3L-12800 (1600 MHz) with 11-11-11 latency. If the platform only supports 1333 MHz the memory will downclock, but the rated speed is the specification that determines whether this is the correct part for the XPS 15 L521X.

How it compares

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

Price $38.99
Cheaper than about 81% 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 $2.44 per GB
Cheaper than about 92% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM10246412800SODRL
Total capacity16 GB (2 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsDell Xps 15 (L521X) Notebooks
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 1.35V DDR3L SODIMMs run in the original XPS 15 (L521X) slots without voltage conflicts?

The kit is DDR3L rated at 1.35V and built to the 204-pin SODIMM form factor used by the XPS 15 (L521X), so it fits the notebook's memory slots directly.

How can I confirm the 1600MHz CL11 timing is active after installing both 8GB modules?

Open Task Manager or a tool such as CPU-Z; the memory tab should show 1600MHz speed and 11-11-11 timings for the 16GB total.

Does the box contain only the two SODIMM sticks or are tools and adapters included?

The package content lists two memory RAM sticks; no screwdrivers, spacers or additional adapters are supplied.

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