Dell XPS Gen 5 Owner's Manual - Page 36
PCI Express Cards - dimension
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www.dell.com | support.dell.com PCI Express Cards PCI Express is the next generation technology for graphics cards and PCI cards. The dimensions of PCI Express card slots are different from PCXI card slots, and the cards are not interchangeable (you cannot install a PCI card in a PCI Express card slot, or a PCI Express card in a PCI card slot). The PCI Express x16 card slot replaces the AGP graphics card slot. Some benefits of PCI Express technology include: • Greater available bandwidth - PCI Express bus bandwidth is 250 MB/s in each direction simultaneously, while PCI bus bandwidth is 133 MB/s in one direction at a time. • Prioritization of service - Multiple PCI cards installed in a computer all share a common bus, but each PCI Express card operates on its own channel. Activities such as video conferencing and web camera functions can be automatically prioritized through the device software to reduce latency. 36 Optimizing Performance