Does PCI take away from PCI Express?
- Thread starter Hagaxe
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Dark Lord of Tech
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nukemaster
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This would depend on the board it self. Most of the time you will not.
Many boards DO have 2 x16 slots that would be cut from 1 x16 to 2 x8 slots when both used.
Many boards DO have 2 x16 slots that would be cut from 1 x16 to 2 x8 slots when both used.
PCI and PCIe are two very different interfaces, they are similar in name only.
The possible PCIe lane configurations are dependant on the physical connections.
Most modern Intel motherboards have one to three PCIe 16x slots connected to the PCIe lanes exposed by the CPU itself. There are 16 PCIe lanes on each of the LGA-1156, LGA-1155, and LGA-1150 socket CPUs. These can be configured in 16/0/0, 8/8/0, and starting with IvyBridge 8/4/4.
Intel chipsets also expose an additional 8 PCIe lanes from the chipset. These are used for peripherals such as network adapters, audio codecs, bluetooth adapters, etc... There are also often one or more PCIe slots exposed from the chipset lanes, commonly 1x, 4x, or a 16x wired in 4x mode.
A 16x slot wired to a CPU with 16 lanes will be reduced to 8x bandwidth if a second card of any width is inserted into another slot that is also connected to the CPU. This includes inserting a 1x card into a 16x slot. The 16x slot will not be reduced if the card is inserted into a slot that is connected to the chipset.
The possible PCIe lane configurations are dependant on the physical connections.
Most modern Intel motherboards have one to three PCIe 16x slots connected to the PCIe lanes exposed by the CPU itself. There are 16 PCIe lanes on each of the LGA-1156, LGA-1155, and LGA-1150 socket CPUs. These can be configured in 16/0/0, 8/8/0, and starting with IvyBridge 8/4/4.
Intel chipsets also expose an additional 8 PCIe lanes from the chipset. These are used for peripherals such as network adapters, audio codecs, bluetooth adapters, etc... There are also often one or more PCIe slots exposed from the chipset lanes, commonly 1x, 4x, or a 16x wired in 4x mode.
A 16x slot wired to a CPU with 16 lanes will be reduced to 8x bandwidth if a second card of any width is inserted into another slot that is also connected to the CPU. This includes inserting a 1x card into a 16x slot. The 16x slot will not be reduced if the card is inserted into a slot that is connected to the chipset.
nukemaster
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Just check the manual it will tell you 100%..
I have high doubts it would do anything like that as that kind of thing only happens on lower end boards. Some of them used to looks a pci-e x1 slot to enable usb 3.0 and stuff like that.
I have high doubts it would do anything like that as that kind of thing only happens on lower end boards. Some of them used to looks a pci-e x1 slot to enable usb 3.0 and stuff like that.
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