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

OWC

OWC 4GB DDR3 1066 PC3-8500 CL7 204-pin SODIMM laptop RAM

SKU CH-5MQ8-EWNG2

4 GB DDR3 1066 SODIMM for laptops, mini PCs and NAS, CL7 latency and 1.5 V operation

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • CAS latencyCL7
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Recommended forLaptops, All-in-One Systems, and NAS Systems
  • 4GB capacity lets you run more applications simultaneously
  • DDR3 1066 speed with CL7 latency delivers responsive system performance
  • 204-pin SODIMM form factor fits laptops, mini PCs and NAS units
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • 5V unbuffered non-ECC design ensures broad compatibility

Capacity and form factor

This is a 4 GB DDR3 SO-DIMM built to the PC3-8500 1066 MHz CL7 JEDEC standard. It uses a 204-pin edge connector and runs at 1.5 V without ECC or buffering. The module is intended as a drop-in upgrade for laptops, all-in-one desktops and compatible NAS appliances.

Who it suits and who it does not

It suits owners of systems that officially support DDR3 1066 MHz SO-DIMMs and need a single 4 GB stick to fill an empty slot or replace a failed one. Buyers whose hardware requires ECC registered memory, a different pin count, a higher or lower voltage, or a faster DDR3 speed grade should look elsewhere.

Deciding specification

The module operates at DDR3 1066 MHz (PC3-8500) with CL7 latency at 1.5 V. If the target system demands a different DDR3 speed bin, a different voltage, or ECC support, this stick will not work.

How it compares

Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 80% of the 2,079 comparable items (median $70.99).
Total capacity 4 GB
Lower than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $6.25 per GB
Typical for this category: the median of 1,886 items is $5.94 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 number8S5D32R804 GB
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Memory
CAS latencyCL7
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Recommended forLaptops, All-in-One Systems, and NAS Systems

Questions about this item

Will this 204-pin DDR3 SODIMM fit my laptop memory slot?

This module uses the standard 204-pin DDR3 SO-DIMM form factor. It fits laptops, all-in-one PCs, and NAS systems that accept DDR3 1066 MHz memory at 1.5V.

What is the correct way to seat this SODIMM so it locks in?

Insert the module at an angle, press down firmly until both side clips click, and verify the notch aligns with the key in the slot.

When should I replace this 4GB DDR3 module?

Replace it if memory diagnostics report errors, the system becomes unstable, or you need more capacity than 4GB provides.

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