The computer is slow, what is the card, cpu or motherboard, or memory?

memory, motherboard, CPU, hard disk and graphics card all have certain reasons. I'll give you a brief explanation, and you can rule it out yourself.

after starting a program or game, check the task manager of the system to see how much memory is occupied and how much CPU is occupied. If the memory usage is high, it must be that there is not enough memory. If the CPU usage is too high, the performance of the CPU is too poor. Of course, there are special circumstances. Some programs or games occupy more memory, while others occupy more CPU.

the motherboard is generally not a big problem, mainly considering compatibility. Can be ignored.

the graphics card is mainly about the smoothness and clarity of the picture. the better the graphics card, the higher the FPS.

The hard disk is mainly about reading and writing speed. For example, when playing a large game, the building will take half a day to load, which means that the hard disk is not working and needs to be replaced with a solid state.

There are still some possibilities. See if there is not enough space on the C drive, or if there is too much computer garbage. Of course, by the way, check if some rogue garbage bundling software has been installed on the computer, and then kill virus and so on.