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Green circuit board with black memory chips and gold edge connector

OWC

OWC 4GB DDR3 1600 CL11 204-pin SODIMM for Dell Inspiron 15R 5521

SKU CH-4S4G-K0WBE

4GB DDR3 1600 CL11 SODIMM upgrades the Dell Inspiron 15R 5521 with 204-pin PC3-12800 memory

  • Total capacity4 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8
  • 4GB capacity lets you run more applications simultaneously
  • DDR3 1600 speed with CL11 latency delivers responsive system performance
  • 204-pin SODIMM form factor fits directly into Dell Inspiron 15R 5521
  • 5V operation matches original laptop power requirements
  • JEDEC and RoHS compliance ensures reliable, warranty-safe upgrade

OWC 4GB DDR3 1600 SODIMM Upgrade

This OWC module provides a 4GB DDR3 1600 memory upgrade built specifically for the Dell Inspiron 15R 5521. It uses a 204-pin SODIMM form factor operating at 1.5V with CL11 latency. The non-ECC, unbuffered design matches the laptop's original specifications for a direct replacement.

Sustained Load Behaviour

The JEDEC-standard PC3-12800 rating ensures stable operation at 1600MHz during extended workloads. As a 1Rx8 single-rank module, it maintains consistent timing without the signal integrity challenges of multi-rank configurations. This supports reliable multitasking and larger file handling over long sessions.

Thermals and Power

Running at the standard 1.5V DDR3 voltage, the module draws minimal power within the laptop's thermal envelope. With no heat spreader fitted, it relies on the system's existing airflow for passive cooling. Silent operation is assured as the component has no moving parts and generates low heat under normal use.

How it compares

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

Price $18.99
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 $4.75 per GB
Cheaper than about 80% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1S6D31R804 GB
Total capacity4 GB
Product type204-Pin DDR3 Non-ECC SODIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsDell Inspiron 15R 5521

Other versions of this model

5 more in the same range

Questions about this item

Will the 1.5V DDR3 module run hot or noisy in my Inspiron 15R 5521 during all-day use?

The SODIMM has no heat spreader and draws 1.5V, so it adds minimal heat and makes no noise inside the laptop chassis.

What must my Dell Inspiron 15R 5521 already have for this 204-pin SODIMM to work?

Your laptop needs a free DDR3 1600 SODIMM slot that accepts 1.5V unbuffered non-ECC memory.

Can I keep my existing DDR3 1600 CL11 stick and add this 4GB module alongside it?

Yes, if the installed module is also 1.5V unbuffered non-ECC DDR3 1600 CL11, the pair will run together in dual-channel mode.

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