A 680 should do the job for Crysis 3 (unless, of course, you have cash to burn and can plop down for a 690/Titan). Also to note - Crysis 3 takes advantage of multi-core CPUs, so you'll be OK on that front (clock speed?). And 16GB of RAM is plenty for any PC game, as you know.
Ehh, ill stay away from $1000 graphics cards. No need on having something that powerful unless you are either programming or modding (Photo realism) in my opinion.
For the most part, I agree. High-end cards are mainly for stressing tasks. I mean, you can grab them for bragging rights, but you will probably feel silly in the long run. $1,000 can buy a lot!
Heck, for that much money, you can have a pretty decent build to start from.
Also, zarx, count me in. =)