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What is The difference between PCI-E 2.0 and PCI-E 2.0 x16?

Last response: in Graphics & Displays
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Anonymous
a b U Graphics card
January 20, 2011 6:31:18 AM

On NVIDIA's website it says that the GT 240 is PCI-E 2.0 and that the GTX 580 is PCI-E 2.0 x16.

I know that all the 2.0,2.1,1.1,1.0 are backwards compatible.

But what is x16, isn't the GT 240 also x16, aren't all modern graphics cards x16?

This has confused me I thought there was only

PCI-Express 1.0, 2.0, 1.1, 2.1 and the graphics card versions are all x16. Is there a difference?

Will a PCI-E 2.0 card run on a PCI-E x16?

More about : difference pci pci x16

January 20, 2011 7:12:07 AM

Simply put, PCI-E is an extension of older PCI. PCI uses parallel paths to send signals whereas PCI-E uses serial paths to send signals.
x1, x4, x8, x16 are simply aliases for the speed offered by each of them. Higher the number, greater is the speed.
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a b U Graphics card
January 20, 2011 9:08:32 AM

All that refers to is the number of PCIe lanes required (although technically you could use 1 lane if you didn't mind spending a few hundred on a shiny GTX 580 only to make it constantly wait for data). Whether it is specified or not, as long as you have a full-length (16x) slot on your motherboard, you can put any PCIe card in it that is compatible with the standard that your motherboard uses - 1.0, 2.0 etc.
Anonymous
a b U Graphics card
January 20, 2011 10:12:25 AM

GT 240 and GTX 580 are both the same slot, why isn't the GT 240 x16, or why doesn't it say x16.
a c 148 U Graphics card
January 20, 2011 10:53:34 AM

Probably just an omission or marketing on the part of NVidia. The GT240 *is* x16.

-Wolf sends
a b U Graphics card
January 20, 2011 7:55:25 PM

Quote:
GT 240 and GTX 580 are both the same slot, why isn't the GT 240 x16, or why doesn't it say x16.

Because for all but the absolute slowest video cards a requirement of a full length slot is implicit.
Anonymous
a b U Graphics card
January 26, 2011 6:41:28 AM

Conclusion,

they are both x16, doesn't matter why they say so or not, but all modern graphics cards use PCI-E 2.0/2.1/upcoming 3.0 x16


They are all x16, there is no PCI-E 2.0 the size of a PCI slot or x1

They don't say x16 because the card doesn't utilize the entire bandwidth available in an x16 slot.



randomizer, close this or mark it solved.






Anonymous
a b U Graphics card
January 26, 2011 6:45:08 AM

Conclusion, they are both x16, doesn't matter why they say so or not, but all modern graphics cards use PCI-E 2.0/2.1/upcoming 3.0 x16


They are all x16, there is no PCI-E 2.0 the size of a PCI slot or x1

randomizer, close this or mark it solved.




a b U Graphics card
January 26, 2011 8:16:08 AM

This topic has been closed by Randomizer
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