Buses in a Graphics Context:. PCI vs. AGP. Context: Why use a specialized bus?. Given: I/O takes a significant amount of time, esp. Graphics I/O. If Graphics I/O moves into separate bus, system buses freed up for other devices.
PCI vs. AGP
Peak at 133MB in 32 bits
Multi-target, single master
Connects to multiple peripherals besides memory I/O
Peak at 533MB/s in 32 bits
Single target, single master - makes DIME possible
Memory read/write only, no other I/O operationsComparison