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GHz? GBs? 15-inch or 17-inch? Learn the Basics

GHz? GBs? 15-inch or 17-inch? Learn the Basics of a Used MacBook or MacBook Pro

Learning to decipher computer slang can almost be like learning a new language. There are terms and phrases to be explained, as well as several acronyms or shortened symbols. Understanding these items is often important to speaking about your computer or trying to find a model that best suits your needs. To get started with computer speak, look no further than the basics below.


“Hertz” (Hz) is a measurement for how fast a computer’s process will run, meaning the higher the number, the faster the computer. If you plan on using fancy software or programs, choosing a computer with higher GHz is a good bet for ensuring speed. As for “giga” (G), this is a standard measurement of computers, just like gigabytes or the smaller megabytes.

GBs aka Gigabytes

This is in reference to the storage size of your computer. Since most folks don't realize pictures and videos can take up quite a bit of space, it's best to consider how much space you will need before settling on a size. Software can also be upgraded or adapted to fit each user’s needs and or purpose with their computer. When it comes to storage, your hard drive may be anywhere from 250GB to 500GB, or maybe more. There are about 1,000 megabytes in a gigabyte. Also keep in mind that an average song uses about 3mb while a movie can be about 300mb. After a while, these files add up and will take up quite a bit of space, along with any software or documents stored on the computer.


When looking at a refurbished Mac that is 15” or 17”, these measurements are purely in reference to screen size. Each screen is measured from corner to diagonal corner (the furthest two apart) to create a standardized measuring system. Screen size is also measured from the screen itself, not from the outer glass or plastic frame.

If you are looking for a refurbished MacBook, screen size also affects the portability of a computer. MacBooks come in three sizes; 13-inch, 15-inch, and 17-inch. While the most popular size is the 15-inch, the 13-inch is the runner up when it comes to convenience. The larger the screen, the more room the MacBook will take up while bringing it outside the house, so make sure to choose the size that works best for you.

Keep these terms in mind when picking out your next Mac or Apple computer. They can help you find the best computer for your needs and decipher any tech talk in terms of specs.