Motherboard/GPU query

The motherboard I am looking at has a "1 x PCIe 2.0 x16" slot.

However the GPU has a "PCI Express 3.0 x16" slot.

Is this a problem or not?

I am a complete novice, sorry.

Depends what type of video card you have

It's the Asus 7770

No its not a problem "PCI Express 3.0 x16" isent in use yet there are no cards that fully use all bw from PCIe 2.0 x16 yet 

ok cheers man, I just wasn't totally sure