The PCI slot is more useful, PCI slot expansion is very rich, can be plugged into the graphics card, sound card, network card, built-in Modem, built-in ADSL?Modem, USB2.0 card, IEEE1394 card, IDE interface card, RAID card, TV card, video capture card, and a wide range of other expansion cards.
The PCI Express gen. 3.0 expansion slot is the main expansion slot on motherboards, allowing users to take advantage of almost all the features of today's PCs by plugging in different expansion cards.
Structurally, PCI is a first-level bus inserted between the CPU and the original system bus, and is managed by a bridge circuit that realizes the management of this layer and interfaces between the upper and lower levels in order to coordinate the transfer of data.
The manager provides signal buffering to maintain high performance at high clock frequencies, and provides connection interfaces for graphics cards, sound cards, network cards, MODEMs, and other devices that operate at 33MHz/66MHz.
Expansion Information
The PCI slot is based on the expansion slot of the PCI local bus. It is typically cream in color and is located below the AGP slot and above the ISA slot on the motherboard. Currently, the 32-bit, 33MHz PCI bus is widely used, and the 64-bit PCI slot is more commonly used in server products.
For many gamers, having two PCI slots on a motherboard is perfect. One for the sound card and one for the diagnostic card or other devices. And some video production users, PCI slots on the motherboard need a little more. Different needs make for different motherboards.
PCI bus systems require a PCI controller card, which must be installed in a PCI slot. This slot is the type of slot that comes with the largest number of motherboards today. On current popular desktop motherboards, the ATX architecture typically comes with 5 to 6 PCI slots, while smaller MATX motherboards all come with 2 to 3 PCI slots.
Depending on the implementation, PCI controllers can exchange 32-bit or 64-bit data with the CPU at a time, which allows intelligent PCI secondary adapters to perform tasks in parallel with the CPU utilizing a bus-mastering technique.PCI allows for multiplexing, which permits more than one electronic signal to be present on the bus at the same time.