What is a PCIE slot? Important slots on a Motherboard?

pci slotA x16 PCIe slot can accommodate far more data per second than current AGP 8x connections allow. In addition, a x16 PCIe slot can supply 75 watts of power toThe top slot on your motherboard will typically be the best place to mount your graphics card, as this is most often the slot that runs at the full 16x speed.