So, I took the dive and purchased the ultrawide, ultraexpensive, and ultramazing Predator X34 with G-Sync and am completely blown away. I'll caveat my experience in several ways - last time I actually used a monitor for PC gaming was about 20 years ago with Tie Fighter (and that was CRT), I've never really seen g-sync in action, and I've never gamed at above 60hz. I've also only had about an hour with it since "life" got in the way. PC stats are in the sig, but basically I run a GTX 760 2gb, with an i5 3570k and 16gb ram. Fine for 1080p, but I was a bit worried about 3440x1440. I'm trying to get this card to last me until pascal, and I think it will since I don't tend to play crazy graphic intensive games at the moment (Smite, Divinity: Original Sin, etc).
For those who don't know, the Predator X34 is a 34 inch, 3440x1440p, 21:9 ultrawide, g-sync compatible monitor. Standard refresh rate is 60hz, but you can "overclock" it by hitting a few buttons using the annoying on screen display (ODS) and setting it to 100gz. Might be a limitation on my GTX 760, but max it will show for me is 95fps. Maybe I'll figure that out at some point.
Here are my first impressions:
I've read that g-sync is ultra smooth. Those people are 100% correct. Even when I tried Crysis 2 (about the most graphic intensive game I had installed) and it ran really well on high at around 60fps - silky smooth just like you'd think it should given all the g-sync hype. Awesome.
Then I fired up Smite, my main game at the moment, and was blown away. I had played at 150fps on my tv without v-sync and that was pretty smooth since Smite doesn't have bad screen tearing anyway. I tried it first at 60fps since I forgot to overclock the monitor and thought I was running at 100fps since it was so amazingly smooth. Then I realized all I was seeing was g-sync in action. Every frame in basically perfect sync. Awesome. I turned the overclock up to 95hz and everything got just a bit smoother. 50% more frames didn't have the same impact as just adding g-sync, but all that smoothness is awesome regardless.
G-Force Control Panel automatically recognized that the X34 was g-sync compatible and change the settings automatically. No pain there.
Panel has some backlight bleed, but not that much. Didn't notice it after I booted up the game, so eh.
Love this monitor so far. Will post updated impressions if people are interested.
Anyways, happy to answer any questions you may have.