It turns out that parallel connections have their own problems as speeds get higher and higher - for example, wires can interfere with each other electromagnetically - so now the pendulum is swinging back toward highly-optimized serial connections.
Serial connections were reliable but slow, so manufacturers began using parallel connections to send multiple pieces of data simultaneously. Computers separated data into packets and then moved the packets from one place to another one at a time. In the early days of computing, a vast amount of data moved over serial connections. We'll also look at how PCI Express makes a computer faster, can potentially add graphics performance, and can replace the AGP slot. In this article, we'll examine what makes PCIe different from PCI. A new protocol called PCI Express (PCIe) eliminates a lot of these shortcomings, provides more bandwidth and is compatible with existing operating systems.
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