Now its important that you dont confuse the refresh

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Now it's important that you don't confuse the refresh rate with another specification called the frame rate. Remember the refresh rate is the number of times a display can redraw the entire screen in one second. The frame rate on the other hand measures the number of individual frames that can be fedto the display device in one second. Also be aware that the refresh rate and the frame rate are determined by both the display device as well as the video card itself. For example, for a display to run at 144 hertz refresh rate, then the video card itself needs to support a 144 hertz refresh rate and vice versa. Now we're gonna talk about the next two specifications as a group because they're actually pretty closely related. We're going to look at brightness and contrast ratio. Let's take a look at brightness first.
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Brightness and Contrast Ratio 7:57-8:40 A displays brightness is also sometimes called its luminance and it's a measurement of how much light the display can emit. Now brightness is rated using a unit called candelas per square meter and this brightness rating ranges usually from about 80 all the way up to 1,000. Now the displays brightness value has an effect on the other measurement we were talking about, the contrast ratio. A displays contrast ratio is a measurement of the difference between-- in intensity between the brightest white and the darkest black the display can produce. Now contrast ratios are written like this, the higher the first number, the better the contrast ratio which results in better image quality. Summary 8:41-9:11 As you can see, there are a lot of different specifications to keep in mind when selecting a monitorand depending upon what the display will be used for, certain specifications might be more important than others. For example, a PC gamer probably doesn't care too much about contrast ratio but does care a lot about the refresh rate, the frame rate and the response time. On the other hand, a graphic designerwould want a display with a high contrast ratio and a very wide viewing angle. Knowing the different specifications used by displays and what they mean will help you select the appropriate display for any implementation. The following table describes the various specifications used by display devices: Specification Description Resolution Resolution is the number of pixels on a display screen. Resolution is expressed in a width × height formula (e.g., 1920 × 1080). The numbers represent the number of pixels on that axis. A higher resolution means that more information can be shown on the screen at a time. Resolutions are often described using a naming standard, although these standards encompass much more than just resolution size. SVGA 800 × 600 XGA 1024 × 768 XGA+ 1152 × 864 WXGA 1280 × 720 SXGA 1280 × 1024 WSXGA+ 1680 × 1050 UXGA 1600 × 1200 FHD 1920 × 1080 WUXGA 1920 × 1200 QHD 2560 × 1440 4K UHD 3840 × 2160 In addition, resolutions are sometimes referred to by their last number followed by the letter "p" (e.g., 720p, 1080p, or 2160p). The "p" stands for progressive scan, which means the display device draws each line on the screen in
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