Speed -- The PCI bus has 32-bit data path, vs. 16-bit for
           ISA. PCI is also a faster bus, running at 33 MHz vs. ISA's 8
           MHz. These differences mean that the PCI bus processes data
           faster across the bus to the subsystem memory, resulting in
           optimized system performance;

           Ease-of-use -- PCI provides true plug and play. Through the
           bus, the NIC can automatically identify itself to the PC and
           automatically configure its own memory address allocation
           and IRQs dramatically minimizing installation issues;

           Low CPU Utilization -- a clear advantage over older
           technologies, PCI NICs are designed as bus master devices.
           With bus mastering, a PCI NIC can request control of the bus
           to initiate data transfers into system memory with no system
           CPU intervention. As a result, the CPU is free to focus on
           other computing tasks during network transfers, providing
           faster and more responsive system performance.