motherboard pcie slots - pcie-slots 888 dragons slot review

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PCIe (Peripheral Component Interconnect Express) slots on a motherboard are used to connect various internal components, primarily expansion cards, to the motherboard.

The MSI X79A-GD65 (8D) is a high-end X79 motherboard featuring eight DDR3 DIMM slots and claims to be the first motherboard with support for PCIe 3.0.

Since you can use a mATX motherboard, you do get more flexibility than an ITX motherboard, such as getting 4 RAM slots and a pair of PCIe slots rather than being limited to one.