PCIe slots are a type of expansion slot in a computer motherboard. A PCIe card is a type of card that uses PCIe slots.
PCIe slots can provide increased bandwidth and improved performance when compared to traditional PCI slots. PCIe cards are typically used for high-performance graphics, sound, and storage devices.
The number of PCIe slots that a computer needs depends on the type of graphics card that is being installed. A computer with a single graphics card will need one PCIe slot.
A computer with two graphics cards will need two PCIe slots. A computer with three or more graphics cards will need three or more PCIe slots.
A conclusion about the number of PCIe slots that a computer needs depends on the type of graphics card that is being installed.