What is PCIe ?

PCIe x1 slots have only one PCIe lane Despite having only one PCIe lane, PCIe x1 slots are useful for various lower-power PCIe peripheral cards

PCIe lanes are limited on consumer platforms, so odds are if you have two x16 slots, they share bandwidth, and having a GPU in one will limit

pcie gpu slot The Riser from Dell™ fits into the PCI-E slot of your Dell System Riser cards are used to extend a slot for a chip or card in a fully loaded computer

pcie 40 gpu in 30 slot The original Mac Pro models have four PCIe expansion slots with one double-wide 16-lane PCI Express slot occupied by a NVIDIA GeForce 7300 GT in the default