Guild Wars 2

So I’m playing currently on a mid-late 2011 13" MacBook Pro and am considering upgrading to a new one. I know that since then the 13" versions have been moved to an i7 processor. What else is different, since I think the memory is the same? And what kind of frames would I be able to achieve? I think right now I’m sitting on a lowsy 17-20 frames and it’s killing me (literally in spvp and WvW).

Also, I forgot to mention that these are on medium setting, with the shadows and blur very very low/off. So is be expecting at least that, if not higher settings.