it looks like you're running the game on the graphics card supplied with the motherboard. I'd buy an external graphics card myself, but I'm no computer expert, it's just something I'd do. Your ram seems fine, although judging from the picture it's only using around 4GB so I'm presuming you're running windows in 32bit? If you're able to, I would upgrade to 64bit as that will allow you the full 16GB of RAM. With that two things combined, it should speed up your game somewhat!

I'm sure someone else with much more knowledge would be able to help you more than I can. Good luck and I hope you get everything sorted the way you want to soon