How to tell what version my MiniDisplay port is?

Hello everyone, I have an MSI R7870 Twin Frozr III OC Edition, GHz Edition, 2GB GDDR5 GPU. Does anyone know what version DisplayPort this card has? 

Seems like v1.2

http://www.msi.com/product/vga/R7870_Twin_Frozr_2GD5OC.html#hero-specification

Thanks mkk :)

That card won't support freesync