No way you going to get 60+ fps with everything maxed out on a single gpu that's for sure. I'm not mad though atleast Crytek is taking advantage of the latest hardware and pushing it to the limit with this game.
I love how people used to moan crysis 2 wasn't a benchmark system. Now with crysis 3 out a real benchmark system needing the latest hardware, everyone complains needing their older hardware support.
I can understand why people are upset about lack of DX10 support. Its been pointed out many times before that some DX10 cards are way more powerfull than centrain DX11 cards and spending 100-200 $/€/£ on decent/good DX11 card for one game sounds quite unreasonable (considering performance gain would not be that huge over their current GPU)
But someone's have to start stop supporting older hardware/software.
I also believe that building solely around DX11 generaly increases games performance, isnt that correct ?