System Memory (RAM)

Random access memory (RAM) is one of the main components that will make your laptop run faster. Memory is used for the temporary storage and manipulation of data, when a program is opened it is loaded into RAM for quick and easy access. The more memory you have the better your laptop is going to perform because it will be able to store more data for quick access. A lot of RAM will allow your laptop to run more programs simultaneously, as well as work with larger multimedia programs. A Web-browsing laptop needs about 2 GB of RAM, while an entertainment laptop can have anywhere from 4 to 8 GB. More memory you have installed – better the performance of the laptop. Memory is one of the few parts in a laptop that can usually be upgraded.

Visual identification

A type of memory used in laptop computers called SO-DIMM (Small Outline Dual In-line Memory Module).

Most types of SO-DIMMs can be recognized at a glance by the distinctive notches that “key” them for different applications:

  • 100-pin SO-DIMMs have two notches.
  • 144-pin SO-DIMMs have a single notch near the center.
  • 200-pin SO-DIMMs (DDR2) have a single notch nearer to one side.
  • 204-pin SO-DIMMs (DDR3) have a single notch closer to the center than on 200-pin SO-DIMMs.
  • 260-pin SO-DIMMs (DDR4), 69.6 mm (2.74 inches) wide and 30 mm (1.2 inches) high, making them 2 mm (0.079 inches) wider than DDR3 SO-DIMMs, with a single notch after pin 144.
  • 260-pin SO-DIMMs (UniDIMM), 69.6 mm (2.74 inches) wide and 30 mm (1.2 inches) or 20 mm (0.79 inches) high, with a single notch placed differently than on DDR3 SO-DIMMs.

Read also how to Cleaning and Replacing Laptop RAM