System Bus vs Expansion Bus
Summary: Difference Between System Bus and Expansion Bus is that system bus, also called the front side bus (FSB), is part of the motherboard and connects the processor to main memory. While an expansion bus allows the processor to communicate with peripherals. Some peripherals outside the system unit connect to a port on an adapter card, which is inserted in an expansion slot on the motherboard.
System Bus
A system bus, also called the front side bus (FSB), is part of the motherboard and connects the processor to main memory. When computer professionals use the term bus by itself, they usually are referring to the system bus. A backside bus (BSB) connects the processor to cache.
Expansion bus
An expansion bus allows the processor to communicate with peripherals. Some peripherals outside the system unit connect to a port on an adapter card, which is inserted in an expansion slot on the motherboard. This expansion slot connects to the expansion bus, which allows the processor to communicate with the peripheral attached to the adapter card.
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