Question

6

What does 1024x768X24 mean?

rated 0 times [ 6] [ 0] / answers: 1 / hits: 4132 / 2 Years ago, mon, september 19, 2022, 10:23:36

I was planning to change the Plymouth screen resolution(Blame Fglrx!).

When I went to GRUB-Customizer(info for that), the screen resolution menu shows (as usual) 800x600, 1024x678, 600x400, and a bunch of other things.

But after I scrolled down, I saw weird screen resolutions like 1024x768 x8, 1280x1024 x16, 800x600 x24, etc. Computer screens shape like a rectangle, not a cube, so what does those extra numbers mean? Or is there a secret dimension in every computer screen that I ignored?

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giccolla

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3 Years ago

answered 2 Years ago cretanol · Accepted Answer

It relates to the number of colors simultaneously shown

That "third dimension" is the bit-depth, or how many colors can be displayed simultaneously on the screen at that resolution.

x8 = 8 bits or 256 colors

x16 = 16 bits or 65536 colors (also called "65k" or "high color")

x24 = 24 bits or 16777216 colors (also called "16.7 million" or "true color")

x32 = 32 bits or 4294967296 colors, or sometimes the same as 24-bits with 8 bits used for opacity/transparency (called "alpha")

Which should I choose?

The highest available. On most modern systems, that will be 24- or 32-bits. See the example below for why:

Example

24-bit

8-bit