As Dunlop says, it will require a good bit more computer to do, but I believe like him, that's it's well worth it.
I have 2 1440 displays going right now, the one I game on is an Overlord Tempest(no longer available, 27" 1440 set at 60hz factory but overclockable, mine is currently going at 96hz, but will run 120hz fine), my other display is a Dell 34" widescreen 1440(beautiful display).
I think the big thing is that 1440 displays can be much larger and still have the right pixel look. 24" displays now seem tiny to me, maybe that's good, maybe not....