Don't buy that BenQ model! It's a FreeSync monitor and since you have NVIDIA gpu, you will not be able to use FreeSync (currently only supported by AMD gpus, NVIDIA doesn't want to support it yet, they have their own similar solution (G-Sync, exclusive for NVIDIA cards only)).
I do have that same ASUS monitor (since mid October) and GTX 980 (Gigabyte GTX 980 G1 Gaming), so I'll try to share some details.
-Is the 2560x1440 res practical for gaming? Can I be confident that older games like ut99 will support this res? Can I be reasonably confident that I'll get 144+ fps in ut4 at this res with max gfx settings with my gtx980?Yep, 1440p res is practical for gaming. I had the same concerns when I was planning to buy it. UT99 works normally on 1440p and I'd say that most of the games that you can play at 1080p, you'll be able to play at 1440p. I can't claim this for every single game, but I never had a problem with resolution.
About UT4, not sure what you consider for max settings? All Epic and AA turned on? In that case, you'll not be able to have a constant 144 FPS. Even without AA, you'll probably want to OC your gpu good. I'll test it a bit more, though the game will probably be more optimized later, as it's still pre-alpha. Honestly, I'm not sure why would you want to turn max details on (considering you probably want to play it competitively). It'll look pretty, but I found it a bit distracting and turned the settings to low to have a better visual clarity. The game still looks great, but less distracting and feels better (higher FPS and less frame drops doesn't hurt either). I think it's still too early to comment on the optimal settings (considering the stage that the game is now).
-Why is the Asus almost $200 more expensive? I can't find any major differences in their feature set and the Asus is the older monitor of the two. I don't mind paying more for even slightly better performance, and surely there are differences somewhere, but I can't find what they are.There are few reasons why the ASUS model is quiet more expensive (I can't say it's justified
).
Major reason is that the ASUS model is a G-Sync monitor. G-Sync adds roughly around $150 to the cost, which is not the case with FreeSync monitors. The reason is that G-Sync requires piece of hardware (G-Sync module) to be built in inside the monitor. FreeSync doesn't need that, cause the FreeSync utilizes the feature (Adaptive-Sync) present in the DisplayPort 1.2a standard. Practically, every new monitor that supports DisplayPort 1.2a should be able to use FreeSync (if you have AMD gpu).
Both G-Sync and FreeSync do the exact thing most of the time (remove screen tearing and stutter), though there are few little advantages of the G-Sync. FreeSync also needs some more in depth testing to be able to tell if there are any more differences.
Second reason for the higher cost is because it's ASUS and ASUS components are usually a bit higher priced than the most of the competition, especially their ROG brand, which is reserved for their best and highest performing components, means top quality, but also the top price. It was also the first 1440p 144Hz monitor, plus the high sales, so that probably affects the price too.
-Who else (if anyone) here has a 27" 2560x1440 monitor? Can you attest to it's performance and usefulness over a smaller monitor for gaming in general? I guess this depends on the individual. Imho, it's useful cause of the bigger display, it feels more natural and comfortable to me, covers more of your vision. The higher resolution also means that you might need less AA in some games.
-What do you guys think about these new monitor options in general? Do you think they can beat the dominant Asus vg248qe and comparable BenQ panels?23"-24" 1080p monitors are current standard and will probably be for a bit long time, till the higher resolution monitors become cheaper. 27" 1440p monitors are becoming more affordable and more popular now. Those new monitors don't have any disadvantage over their 1080p counterparts and the few best monitors currently are 1440p, cause the industry seems to have put the focus now on 1440p monitors.
Beside that ASUs model, which I can totally recommend, there is one more that I think you should look at - Acer Predator XB270HU. This one was presented recently and the main thing about it is that it's first 144Hz IPS monitor (it's actually new AHVA panel, which is IPS like, but such panels (AHVA, PLS...) are advertised as IPS cause they share the same characteristics), plus it also has minimal input lag, which is generally not the case with IPS monitors.
If I'd be buying now, I'd choose between these two. I'm really more than satisfied with the ASUS, though I might be leaning toward the Acer model, only because it's IPS. Just to share the few facts and the experiences of others:
- ASUS model has better design and look, material and the build quality is better and feels more premium compared to Acer
- disatvantage of ASUS is that it's TN panel (slightly worse picture and worse viewing angles), though it's one of the best looking (if not the best) TN panels (it's first, not sure if it's still the only TN panel with full 10bit colors). It has great factory calibration out of the box and the people from ROG team had to really tweak it good and set to have the best picture as possible, cause it wouldn't be easy to sell TN monitor for such a price. I can tell you that the picture and colors are great for TN monitor. Acer model is IPS, which means much better viewing angles and a slightly better picture overall.
- both have minimal input lags (don't look at the advertised values, but those measured in the actual tests) and have DisplayPort only
I should maybe also note that some people seem to had specific issues with ASUS model (like dead pixels or few other display issues) and had to return it and exchange for another one. You should maybe check that on the net, though I think that talk about it is a bit exaggerated and that the problem was more present with those first batches. I had zero problems and I'm totally satisfied with mine.
I'll post a two links for these two models with full tests, so you can have a better insight and more detailed picture:
ASUS ROG Swift PG278Q
http://www.tftcentral.co.uk/reviews/asu ... pg278q.htmAcer Predator XB270HU
http://www.tftcentral.co.uk/reviews/acer_xb270hu.htmFeel free to ask anything more.