Ok then how much fps would I get on medium settings on 1080p and 720p
On 1080p you'd probably get 30-40 FPS but on 720p you'd get a very nice 50-60 FPS. However, for both resolutions, I predict you'll get very rare lag spikes. But it's quite playable if you ask me, on that GPU and CPU at medium settings with those resolutions. I'd go for medium settings on 720p because FPS is everything.