3DMark PCI Express feature test
PCI Express (PCIe) is a standard interface that provides high-bandwidth communication between devices in a computer. New PCI Express 4.0 interfaces provide up to twice the bandwidth of PCI Express 3.0. With more bandwidth, games can transfer more data, reduce loading times, and support more complex scenes.

3DMark feature tests are specialized tests for specific technologies. The 3DMark PCI Express feature test is designed to measure the bandwidth available to your GPU over the PCIe interface. It will help you compare bandwidth across PCIe generations with a test that’s quick and easy to use.