What does the OS use to draw the GUI: CPU or GPU?

Question

linux

Briefly :
OS (Linux) draws everything that we see on the monitor (graphical shell, programs, browser). Is GPU or CPU power used to draw this image ?
Read more :
I have connected a 4k monitor to my laptop. But now my Ubuntu is slow, my laptop is hot. I wanted a powerful system.
3840x2160. Will a powerful video card help me? Does Ubuntu use the power of the graphics card at all (when drawing the GUI)? Or is the processor power important?
Thank you!

Answer 1

drawing the interface is too heterogeneous a task to throw off on the GPU.
I'll point my finger at the sky and say the percentage of GPU usage is small.
upd: rendering of non-multimedia interface elements is implied - windows, buttons, menus ...
"inside the interface" of the program already depends on the code of the application itself.
in 3D toys, video players and similar GPUs are used very actively.
upd: means, for example, a video stream in which you need to perform a small number of operations on a large amount of data.

Answer 2

3840x2160. Will a powerful video card help me? Does Ubuntu use the power of the graphics card at all (when drawing the GUI)? Or is the processor power important?

Yes, with a powerful video card in 4k it is more comfortable to work. From the processor is not such a strong dependence, but the more powerful - the better. For games in 4k, you need a top-end card, something like 1080ti/2080/ti.

Answer 3

But now my Ubuntu is slow

Open System Monitor and see what you get into

Answer 4

In general, it is the GPU that is responsible for rendering graphics, and in order to have good graphics, you must have a good graphics card (GPU). Usually on laptops it is impossible or very difficult to upgrade the GPU, because it is either soldered to the motherboard or built into the processor. There are ways to connect an external GPU, but this is not very convenient, as the laptop turns into a monster. Ubuntu doesn't have good graphics support and therefore it doesn't make sense to use a powerful graphics card. Typically, Ubuntu laptops can only feel good when connected to a monitor no more powerful than FullHD (1920x1080). Thank you for your attention.

Answer 5

To display any graphic information, a GPU is used, which can be built into the CPU.
If you do not have a GPU or a separate chip that is responsible for displaying the image (usually it is an extremely weak GPU in fact) - then there will be no image at all :)
Another thing is that the higher the resolution and the more beautiful things on the screen - the more GPU power required. For example, old laptops with integrated graphics were often dumb and warm on animated ads and even on YouTube.
In general, if the laptop is not ancient, then 7-8 generations of Intel with integrated graphics pull 4k, no frills.
If an older one is built in, then with a high probability it is not enough.
One of the options to try to solve the issue is to increase the amount of memory in the BIOS that is given to the integrated GPU.

Answer 6

Cpu is in nvidia settings. Maybe gpu. You can read about it on the nvidia website. In this case, processing is 15 times faster. But it is Cpu that is used.

Answer 7

In general, according to the canon, the GPU renders. On many models of video cards, the recommended resolutions and the number of supported monitors are written at the same time.