PCI vs PCIe vs PCIX

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nmakes

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May 18, 2013
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I want to know the specifications of PCI, PCIe 2.0, 3.0 and their differences. Can anyone teach me the basics of it. Thanks!

PS: I have never worked with a graphics card, so, I'm a noob in this thing.
 
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manofchalk
PCI basically doesnt exist anymore unless your working with older systems, dont worry about it.

PCI-Express replaced PCI, and is whats standard now. The generation (PCI-e 2.0, PCI-e 3.0) just refers to new revision of it, main difference is the amount of bandwidth.
All your PCI-e slots have a number next to them, either 1x, 2x, 4x, 8x or 16x. That refers to the number of physical lanes/wires between the GPU and CPU which is indicative as bandwidth. Gen 3 has double the bandwidth of Gen 2, so a Gen 2 8x slot is equivalent to a Gen 3 4x slot in terms of bandwith.

As long as your plugging your graphics card into Gen 2 8x level bandwidth, your fine. Graphics cards arent nearly capable of taking advantage of Gen 3, which is more of a...
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manofchalk

manofchalk

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May 11, 2012
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PCI basically doesnt exist anymore unless your working with older systems, dont worry about it.

PCI-Express replaced PCI, and is whats standard now. The generation (PCI-e 2.0, PCI-e 3.0) just refers to new revision of it, main difference is the amount of bandwidth.
All your PCI-e slots have a number next to them, either 1x, 2x, 4x, 8x or 16x. That refers to the number of physical lanes/wires between the GPU and CPU which is indicative as bandwidth. Gen 3 has double the bandwidth of Gen 2, so a Gen 2 8x slot is equivalent to a Gen 3 4x slot in terms of bandwith.

As long as your plugging your graphics card into Gen 2 8x level bandwidth, your fine. Graphics cards arent nearly capable of taking advantage of Gen 3, which is more of a future-proofing thing for PCI-e based SSD's and storage solutions.
 
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