We're expensive «PCIe ports» in the expansion of the expansion of our PCB board. As we think you'll know, these Slots are responsible for allowing the placement of expansion cards For our computers. Until many years ago, our PCs had a mixture of PCI and PCIe Slots. However, for almost 5 years, Intel or AMD did not officially support the PCI bus on their boards. So, as of now, motherboards only support PCIe ports.
PCI port (top) and PCIe x1 (bottom)
However, as you should know, a PCIe port is a standard procedure. This means that the motherboard builder can choose the type of ports they want to install. And this will, because, according to the model at the port, this will be bandwidth and transfer rate You will have an extension card available. This is clearly the opposite of the old PCI ports (similar to the one in the picture above). Whose bandwidth is shared by all the cards connected to the bus.
Types of PCIe ports
All PCIe ports are characterized by a split two parts.
The first part is this to feed provider of expansion card boards. This power can reach 75 W. And that's the reason some low graphics cards don't require auxiliary power connectors.
The part that goes after feeding is the place there methods of datas. Also, depending on the number of data paths connected to it, how long this will be slot. In fact, all PCIe ports are always called based on this number. That's why there are ports of PCIe x1, x4, x8 and x16.
PCIe port x1
The smallest of all, this type of port is used extensively for expansion cards. Since, most of them do not require high file transfer rates to work.
There is only one way for PCIe to access this link. This means that, if the motherboard is using PCIe 3.0, the maximum bandwidth It will be 8 GT / s (GigaTransfers per second). You have access to a data transmission rate of 984.6 MB / s. In the case of using PCIe 4.0, prices double. Which means the bandwidth will be 16 GT / s and then transfer rate Maximum will be 1,969 MB / s.
PCIe x4 port
This port is not very common on desktop grade motherboards. The makers of motherboards they usually prefer setting up more PCIe x1 ports than x4, because there are not many expansion cards in that section, which require 4 PCIe data paths to work.
The information This type of port, for PCIe 3.0, that offers a maximum transfer rate of 3.94 GB / s. Also, with PCIe 4.0, this transfer rate goes up to 7.88 GB / s. The bandwidth is the same in the case of PCIe x1 in both cases.
The wonder of this kind of port is that its right end is usually open. This allows you to connect to it expansion cards designed for high-definition PCIe ports.
PCIe x8
Another PCIe port that is rarely used in desktop environment. Like the previous PCIe x4, it's most commonly used on motherboards in the HEDT range, and most of all, server range. And for the same reasons we planned earlier.
Level of transfer The port file size is 7.88 GB / s for PCIe 3.0. Also at 15.75 MB / s, in the case of PCIe 4.0.
PCIe x16
It is probably the best-known PCIe port for many users. Because, it's up to them where we have to put, usually, graphics card from our PC. In fact, it is the only of all PCIe ports that are available on all baby board components in the desktop range.
Level of transfer the port support limit is 15.75 MB / s in the case of PCIe 3.0. Or 31.51 MB / s in the case of PCIe 4.0.
There is something to be clear about this port on the boards. It is not uncommon for motherboard manufacturers to install a second PCIe x16 board on the board. Although the chipset you set up, do not allow using the x16 or x8 modes for this second port. In fact, this port usually has 4 data paths enabled. And yes, we can connect a graphics card without any problems. And it worked The cross of fire, in the case of two AMD Radeon models. But we can't activate SLI, because NVIDIA does not guarantee such a configuration.
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