I just saw the comparison pictures for DX9 and DX11 version http://jp.finalfantasyxiv.com/pr/blog/

My question is, how do you think this will affect a slightly older graphics card?

I'm getting my bros old PC (i5 3570k, HD7950 and SSD), and as for what I know, if I over clock both of those (GPU can be overclocked a lot), I should be able to run the game smoothly.

I don't have any clue what will change in the DX11 client, all I've heard is that it is more efficient... But is that added efficiency, enough for me to increase the graphic settings, so that I get those shiny good looking effects?

There is a benchmark coming very soon, I know, but I can't wait