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Green rectangular circuit board with gold edge connector and black memory chips

OWC

OWC 1S3D32R808GB 8GB DDR3 1333 PC3-10600 CL9 2Rx8 204-pin 1.5V Non-ECC SODIMM memory upgrade

SKU CH-QQ7V-CQVMX

An 8 GB DDR3 1333 MHz SODIMM module built for the Lenovo ThinkPad W520

  • Total capacity8 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8

Capacity 8GB

  • 8GB capacity expands multitasking headroom for Lenovo ThinkPad W520
  • DDR3 1333 CL9 speed matches factory memory specifications exactly
  • 5V JEDEC-standard voltage ensures stable operation without BIOS changes
  • 204-pin SODIMM form factor fits laptop memory slots directly
  • 2Rx8 dual-rank organisation maximises density in a single module

8 GB DDR3 SODIMM for ThinkPad W520

This single 8 GB DDR3 1333 PC3-10600 CL9 module is built as a direct memory upgrade for the Lenovo ThinkPad W520. It uses the standard 204-pin SODIMM form factor and operates at 1.5 V without ECC or buffering. Installing this module adds capacity to the supported laptop so more applications and larger files can stay in memory at once.

Low-voltage DDR3 runs cool and quiet

DDR3 memory at 1.5 V draws modest power and produces little heat inside the thin chassis of a mobile workstation. The unbuffered, non-ECC design has no active cooling and adds no audible noise. Normal operation stays within the thermal envelope of the ThinkPad W520 without requiring extra airflow or a higher-wattage power adapter.

8 GB single-module capacity

The upgrade consists of one 8 GB stick organised as 2Rx8. Buyers whose ThinkPad W520 already has both SODIMM slots filled must remove an existing module to install this one. Systems limited to a lower maximum per slot or to a total capacity below 8 GB cannot use this module.

How it compares

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

Price $27.99
Cheaper than about 86% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $3.50 per GB
Cheaper than about 87% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number1S3D32R808 GB
Total capacity8 GB
Product type204-Pin DDR3 Non-ECC SODIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsLenovo ThinkPad W520

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 204-pin SODIMM in my ThinkPad W520?

Power off, unplug, remove the battery, open the memory door, insert the module at an angle until the gold contacts disappear, then press down until the clips lock

What maintenance or replacement will this 8GB DDR3 module need later?

No scheduled maintenance is required; the module has no heat spreader and is not serviceable, so replacement only occurs if a fault develops

What limit appears first under sustained use with this 1.5V CL9 memory?

The DDR3 1333 speed and CL9 latency set the throughput ceiling before voltage or thermal constraints become a factor

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