Reviews, reviews, reviews...

Question: VGA Compatibility

I just bought Biostar G31-M7 TE with my custom build PC. Till now I was using integrated VGA (Intel(R) G33/G31 Express with PCI Express 2.1).It sucks.
I found a very tempting offer for VGA ASUS AMD HD 6670 2GB.I dont know what those numbers "2.1" are,so my question is: Is this VGA compatible with my MoBo? TY