MacPro Early 2008, GTX680 2GB, 10.9.5 - Can I get 3440x1440 over HDMI?

Hi,

I have both a gaming PC (DisplayPort) and my MacPro (DVI) hooked up into a 27" Dell 2560x1440 display and it all works fine.

I am looking to buy a new G-Sync 3440x1440 monitor, specifically this one:

https://www.amazon.co.uk/PG348Q-34-...e=UTF8&qid=1471701647&sr=8-1&keywords=asus+34

I would still like to be able to plug in both my PC (over DisplayPort) and MacPro (over HDMI). The spec sheet of my PNY GTX680 2GB states...

MacPro Early 2008, GTX680 2GB, 10.9.5 - Can I get 3440x1440 over HDMI?