PCI Express (PCIe) is currently the most common and high-performance expansion slot used for video cards in modern desktop computers. PCIe offers high-speed data transfer rates and has largely replaced older standards such as PCI and AGP. ISA is an outdated standard and not used in modern systems, while CNR was a short-lived slot type intended for networking and audio cards rather than video applications.
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What are the benefits of using PCI Express (PCIe) over older standards like PCI?
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What does 'expansion slot' mean in the context of a desktop PC?
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How does the data transfer speed of PCIe compare with ISA and PCI?