Your PC should run it on low settings. You're safely above the minimum requirements, aside from RAM, and I've heard many people say 4GB is still enough for low settings.
This is a video of someone with the same GPU as yours, and a weaker CPU than yours, running it. He's running at 720p on medium, so you should either manage the same settings, or 1080p on low.
https://www.youtube.com/watch?v=W47Wi1TymCw