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is pci-e 2.0 backward compatible with pci-e 16x

post #1 of 7
Thread Starter 
is pci-e 2.0 backward compatible with pci-e 16x? i think ive read that somewhere but i tried searching it with no help im about to buy a graphic card but dont want to waste 104$ to find it doesn't work
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post #2 of 7
Please see sig.


x16 is a formfactor. There is PCIe 1.0 x16 and PCIe 2.0 x16. Your real question is PCIe 2.0 backwards compatible with PCIe 1.0/1.0a/1.1.

PCIe 1.0, 2.0, 3.0 will always be intercompatible. Any PCIe card will work in any PCIe slot as long as you can get it to fit.
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post #3 of 7
Yep it is.

http://www.overclockers.co.uk/showpr...32-CK-NF78-A1)

If you go to that link for example it says so

Quote:
When using this platform with an EVGA PCIe 2.0 graphics card; double the bandwidth is achieved. With up to 16GB/s of bandwidth and advanced power management features, PCIe 2.0 is the ultimate interface for enthusiasts.

PCIe 2.0 is entirely backwards compatible, meaning a PCIe 2.0 card or motherboard will work with any PCIe device and visa versa.
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post #4 of 7
Thread Starter 
thanks, so pci-e2.0 i can fit a pci-e 16x card and it will work?
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post #5 of 7
Quote:
Originally Posted by wierdale24 View Post
thanks, so pci-e2.0 i can fit a pci-e 16x card and it will work?
yes. as lon as the pci-e 2.0 is 16x as well. [you can tell just by the size of the DIMM or w/e its called]
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post #6 of 7
Yeah that will work. Pci-e 2.0 slots will run a pci-e 1.0 card and a pci-e 2.0 card will run on a pci-1.0 slot. The slots are physically the same, but the 2.0 types offer greater bandwidth. The newer technology is scalable (just like pci-e itself) so it allows for backward compatibility.
 
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post #7 of 7
It works no problem, most cards wont even see a performance hit if you use the older pci-e 1.1
I also believe you can use an old pci-e in a pci-e 2.0 with no problem either.
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