When selecting industrial computers, we often encounter PCI and PCI-e expansion slots, what are the differences between the two?
1. Different colors. In IPC motherboards, the PCI slot is milky white, while the PCI-e slot is black.
2. The transmission rate is different. PCI slots have maximum data transfer rates of 133MB/sec (32-bit) and 266MB/sec (64-bit), while PCI-e slots can now reach up to more than 10GB/s.
3. The standards are different. There is only one standard for PCI slots, while there are 7 standards for PCI-e slots: X1 (250MB/s), X2, X4, X8, X12, X16, and X32 lanes.
4. The bus type is different. A PCI slot is an expansion slot based on the PCI local bus, with a bit width of 32 or 64 bits and an operating frequency of 33MHz. The PCI slot of the industrial computer can be connected to 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 other types of expansion cards. PCI slot is the primary expansion slot of the industrial computer, and almost all the functions that the industrial computer can achieve can be obtained by plugging in different expansion cards, which is a well-deserved "universal" expansion slot.
PCI-e has 7 channel standards, which are very scalable to meet the different requirements of different system devices for data transmission bandwidth. In addition, shorter PCI-e cards can be inserted into longer PCI-e slots. Because PCI-e is only the expansion bus of Nanqiao, it has nothing to do with the operation system, which not only enables the PCI-e interface and PCI interface of the industrial computer to coexist, but also brings convenience to the user's promotion.
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