Select Additional RAM

Adding RAM can optimize laptop performance. Additional RAM speeds up the process by decreasing the number of times the operating system reads and writes data to the hard drive swap file. Reading and writing data directly from RAM is faster than using swap files. Also, RAM helps the operating system run multiple applications more efficiently.

Graphic processing in laptops usually is performed by the CPU and often requires extra RAM to store the video while the CPU decodes it for viewing. New applications, such as video sharing and video editing, demand increased performance from laptops. Installing expansion RAM can help increase laptop performance.

The laptop's make and model determine the type of RAM chip needed. It is important to select the correct memory type that is physically compatible with the laptop. Most desktop computers use memory that fits into a Dual Inline Memory Module (DIMM) slot. Most laptops use a smaller profile memory chip that is called Small-Outline DIMM (SODIMM) (see Figure 13-7). SODIMMs are smaller than DIMMs, so they are ideal for use in laptops, printers, and other devices where conserving space is desirable. When replacing or adding memory, determine whether the laptop has available slots to add memory and whether the laptop supports the quantity and type of memory to be added.

Figure 13-7 SODIMM RAM

Before purchasing and installing additional RAM, consult the laptop documentation or the manufacturer's website for form-factor specifications. Use the documentation to find where to install RAM on the laptop. On most laptops, RAM is inserted into slots behind a cover on the underside of the case, as shown in Figure 13-8. However, on some laptops, you must remove the keyboard to access the RAM slots.

Figure 13-8 Laptop SODIMM Installation

Caution

Before installing RAM, remove the battery and unplug the computer from the electrical outlet to avoid damage related to electrostatic discharge (ESD) when you are installing memory modules.

Caution

Before installing RAM, remove the battery and unplug the computer from the electrical outlet to avoid damage related to electrostatic discharge (ESD) when you are installing memory modules.

To confirm the currently installed amount of RAM, check the POST screen, BIOS, or System Properties window by choosing Start > Control Panel > System and then clicking the General tab. Figure 13-9 shows where the amount of RAM can be found in the System Properties window.

Figure 13-9 System Properties

Worksheet 13.3.4: Laptop RAM

In this activity, you use the Internet, a newspaper, or a local store to gather information about expansion memory for a specified laptop. Refer to the worksheet in IT Essentials: PC Hardware and Software Labs and Study Guide, Third Edition. You may complete this worksheet now or wait to do so until the end of the chapter.

Continue reading here: Connect the Device to a Local Port

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