I'm pretty excited about G-sync. Yet, according to the live stream NV which I watched - it won't be ready until Q1 2014. I'm not sure that is an existing issue as of yet, because it won't be ready for some time.
This isn't detracting from it. I hope G-sync or something along those lines becomes ubiquitous - it looks pretty amazing in motion.
I wasn't trying to be tricky, just saying what I think the logical counters are for this card.
The more obvious is its lateness for current 28nm users, which has nothing to do with 40nm and later hold outs and the gotta have it people.
I personally skipped the 780 even though I really wanted it because I didn't want to spend that much, a few bucks six months later isn't going to change my opinion and it seems the 290X is still going to be slower same as the 780 was without the benefit of bitcoins for either.
I like how nVidia is packaging their name around gamers, not just performance but the tools a lot of us use. Like G-Sync, ShadowPlay, and it's direct interface with Twitch.
On a personal level I already use Virtual V-Sync but G-Sync seems a whole lot better, I also use my HD4600's Quick Sync to encode on the fly reducing the FPS hit from recording video, I don't twitch, but you can do the same with your HD4600.
So there are some options out there that do what Nvidia is trying to compile into a single package, though it seems there are clear advantages with using the Nvidia ecosystem in this regard.
R290X is too "plasticky" and lacks the good in-hand feel of metal Titan, also NV cares about their consumers and don't want them to damage their expensive hardware so they incorporate their innovative OV protection program. Shame on AMD for not being so consumer friendly!
Nvidia should care more and stop those pesky bios flashing programs that subvert their will.