Usually through the front side bus, or if you mean to get even more technical, electronic circuitry pathways I'd assume.
System bus
The Front Side Bus (FSB) connects the processor (CPU) in your computer to the system memory.
socket on motherboard
An expansion bus will not work in sync with the CPU. In addition, it will not work with the system clock.
CPU operates from 166 MHz to more than 3 GHz system can operate from 133 MHz to 400 MHz. CPU is faster than the system bus
The system bus is usually inside of the CPU, but I guess it depends on the processor and the motherboard. Usually, CPU clock speeds are faster, as they are measured in GHz, while the system bus speed is usually measured in MHz. Hope this helped! SeanHolshouser
The bus that connects the CPU to main memory on the motherboard. I/O buses, which connect the CPU with the systems other components, branch off of the system bus."The system bus is called the frontside bus, memory bus, local bus, or host bus."See the Related Links below.
anything connected to the cpu is a system resource
A system bus frequency is 1600 MHz. A CPU frequency is 166 MHz to almost 4GHz.
Front side bus.
On modern systems, the CPU. *Very* old systems (Apple II, "IBM" PC) use the same CPU and bus speeds.
System Bus