On windows, hit ctrl+shift+esc at the same time to open task manager, go to the second tab and it should show you your cpu, gpu (graphics card), storage and ram.

For anyone wondering, I have a ryzen 5 5600 for the cpu, rx 7700xt for the gpu, 16 gigs of ddr4 ram and a 1 terabyte nvme with a 500 gig hard drive.