4 ms·
Other than the integrated graphics that are directly part of modern Intel CPUs, everything else you mention is typically internally connected by PCI-e. Onboard
by tenebrisalietum 6y ago
Other than the integrated graphics that are directly part of modern Intel CPUs, everything else you mention is typically internally connected by PCI-e. Onboard USB ports lead to a controller which talks to the CPU via PCI-e, for example.
PCI-e lanes are a limited resource on a CPU and really fast. Dedicating one to a keyboard, for example, is probably inefficient.
I have heard (don't know too much about it) some Intel NICs are able to place network packets right in the CPUs cache for maximum speed, this probably can't be done via PCI-e.