buying a pc very shortly: are these spec good to run crysis on highest?

[Squilliam]

Go for the HD 4870, its got direct 3d 10.1 so it will benefit from the release of direct 3d 11 by as much as 20% in some cases and it has a tessellation engine which IIRC is direct3d 11 compliant. I think it would be more future proofed, but get the 1GB version.