Advantages of PCI-Express video capture card
Compared with the traditional PCI bus, PCI Express has a fundamental innovation in its working mode - it adopts a point-to-point bus connection mode. The traditional PCI bus works in a way of exclusive bandwidth. Only one device can communicate on the PCI bus at any time. Once the number of devices on the PCI bus increases, the problem of bus control contention will seriously restrict the performance of PCI devices.
The PCI Express bus adopts a point-to-point connection mode. Each device establishes its own transmission channel when it requires data transmission. This channel is closed to other devices. The channels do not interfere with each other, and the efficiency of data transmission is greatly improved.
Advantages of video capture cards based on PCI-Express interface:
The excellent data throughput capacity of the PCI-Express interface breaks the bottleneck of insufficient data transmission speed of the traditional PCI interface for video soft compression cards to make a large number of channels, high-quality, and full-time stable recording system (currently JY-5008 (A) can support up to 32 channels of audio and video in full real-time, and it is recommended to use this card for more than 20 channels). At the same time, the increasingly popular and low-priced Intel 945G series motherboards with PCI-Express interfaces also provide a good platform for its application and popularization.
Currently, the number of PCI-Express interfaces on motherboards with integrated graphics cards of Intel 945 chipsets is commonly 1 to 3, but the motherboards of this series generally also have a PCI-Express 16X independent graphics card slot. Since the PCI-Express interface standard is compatible from top to bottom, the PCI-Express x16 independent graphics card slot can also be used as a slot for video soft compression cards based on the PCI-Express interface. At the same time, because PCI Express is also compatible with the PCI specification at the software level, the video soft compression card JY-5008 (A) with the PCI-Express interface can be mixed with the video compression cards JY-4004 (A) and JY-4008 (A) of the same series with ordinary PCI interfaces as needed to obtain the most reasonable solution.