Will a PCIe 3.0 card work in a PCIe x16 slot?

[Masarus]

Will a GTX650-E-2GD5 (PCIe 3.0, 2GB DDR5) work in a MSI2A9C Mainboard? (PCI-Express x16 sloth).

 

[Ahmadjon]

Yes it will! the difference is only in bandwidth

 

[Masarus]

There will be any kind of performance decrease?