Is there any difference between the slot PCI and PCI-E for graphics cards?

1, the broadband transmission speed is different.

The main difference between PCI and PCIE slots is that the broadband transfer rate is different, PCI-E can increase the data transfer rate to a very high frequency, to achieve the high bandwidth that PCI can not provide, PCI slot transfer rate relative to the PCI-E to be about 4 times lower.

2. Different compatibility.

In terms of compatibility, PCI-E is compatible with current PCI technology and devices at the software level, and supports the initialization of PCI devices and memory modules, which means that past drivers and operating systems do not need to be pushed back to support PCI-E devices. Currently PCI-E has become the dominant interface for graphics cards.

3, the socket is different

PCI Express refers to the latest graphics card socket, now is the PCI Express and AGP (Accelerated Graphics Port) conversion period, the previous graphics card with the AGP port. The earliest is the graphics card with PCI after is AGP to the current PCI Express, and the latter is faster.

4. The transmission methods are different.

PCI Express is different from PCI in that it realizes a shift from parallel to serial transmission; PCI Express is a point-to-point serial connection that supports hot swapping and hot swapping features.

Baidu Encyclopedia - pci Express