Unless you were playing on a 30" monitor a single 260 should've yielded playable framerates. The game's power hungry but certainly within reach especially these days. Anyways Crytek themselves admitted they didn't design it to be maxed out day one. It's scalable enough that a few years from now it'll still look good next to whatever 1st gen PS4/720 games launch. The current consoles still can't touch it.
These days it's as easy to hook up an HDMI ready PC to the TV as a console. I've had mine out for gaming but was also convenient for get togethers when someone wanted to watch something on youtube or make a pandora playlist. The part that sucks is ideally you need a separate PC for that or else deal with hauling it back and forth. PS3 is good enough there for the time being.