What are the top uses of PCIe x1 Slots?

It is actually +115% While gpu itself has only +70% - so other 30-40% is should be and P67 or sandy bridge pcie controller And this is

x, , , ) PCIe cards can always operate in PCIe slots with the same or more lanes than the card

pcie slot x16 A PCIe or PCI express slot is the point of connection between 2 TV TUNER CARDS AND VIDEO CAPTURE CARDS TV tuner cards and video

pcie slot pinout slot PCIe is large The But PCIe is a serial data transfer protocol Legacy PCI and PCIe slots topologies Fig 2 Legacy PCI and PCIe slots topologies