Pci express® 2 1 x16 bus interface compatible for pci-e 2.0 motherboar

pcie 1 , 2 and 3 are both forward and backwards compatible.
You will have no compatibility issues with any pci-e graphics cards, and no performance issues so long as you are looking at a X8 pci-e slot at least.

Because your mobo is 2.0 it will work, 2.1 is the same as 2.0 according to a mod. ( actually 2.1 doesn't exist )

For akshay0009 , please only post your question once and not multiple times. Thanks!

thanx buddies!!

pci-e 2.0 is version and 1 mean that you are able to run one card at full speed like 1 x16 so its mean there is only one slot available for full speed.

????   Correct me if i'am wrong but you're saying that a 6870 for example which is sold as a 2.1 only can run at full speed, standing alone or just has one slot ??? What are you talking about ?????