The type of connection your graphics card has with your motherboard is called a 'bus'. For modern motherboards most of the available expansion slots will be based on the PCIe or PCI Express standard.

The vast majority of EVGA cards will use the PCIe standard in the x16 size. This is the longest PCIe slot and most motherboards usually include at least one for graphics card support. Longer PCIe slots support higher data-rates, allowing for more data to move between the card and the motherboard. The max theoretical bandwidth of an x16 slot is 16 times that of an x1 slot. Because modern, high-performance, graphics requires high data-rates, graphics cards typically use the highest bandwidth PCIe slot, x16. Some lower end cards may support the PCIe x8 slot size, but this is uncommon. Very few, if any, cards will support an x4 size or an x1 size.

To make sure your motherboard is compatible, please compare the bus on your motherboard with the charts below