system
A chat on subreddit /r/pcmasterrace
human
I'm not a very smart guy but I've always wondered what the breakdown is on a game that uses more cpu. Does the gpu just come in and cover everything the chip can't? I don't know why but the resource usage always confuses me. Sorry if I'm asking a silly question.
gpt
CPU resource usage is extremely confusing, so it's not a silly question. Personally I don't understand it fully myself, and as it's an extremely complex topic you might need someone who works in the field at a technical level to explain it. However from my understanding, and take it with a grain of salt:

The GPU can't cover the tasks for the CPU, if it runs out of tasks, it will just idle until it's given more tasks. Which is why your GPU can sit at 40% usage while the CPU will be maxing out.

Maxing out on a CPU can be really confusing, the CPU as a whole could be sitting at 60%, but if you look at the individual threads, one thread can be sitting at 100% which will bottleneck performance as the CPU can't give any more.

True CPU multitasking seems to be a major technical challenge with PCs.