Get a 550watt PSU just for some headroom, and get a GTX 760 4GB Graphics card. For $300, you get higher FPS in BF3 Ultra and in Minecraft with shaders than a 7970. I am going to sell my 7970 soon because it just isnt worth the price. It is too much for its performance. A $300 dollar card that beats a $400-450 card? The 7970 isnt worth it. End of story.

The images cards you wish to have are significant, don't believe graphics playing cards are like the image, they're much better, I don't suppose it'll fit in your'e case and you're vigor give would not be able to manage with it. Additionally, you are CPU will bottleneck you're GPU, this means that it wont let the GPU work to it can be full skills on account that the CPU is just not powerful sufficient, this may increasingly decrease frame premiums, render instances and just general performance.

The rest is fine.

If the i5 is i5 600 series there will be a bottleneck.