Can I run Unity?

Hello. I want to buy an iMac 2012, with i7 3770, 16+gb RAM, GTX675mx and I’ll install Windows on it. I know, that CPU is okey, but I’m not sure, that GPU is good enough.
I will develop NPC AI. So I don’t need to create games or models with too cool graphics. GPU will be good enough or I need to look for something else.
And yes, I want to buy iMac, because it’s beautiful and I hate wires