The beta of the the division ran great on my XB270HU with a 970. The issue is the monitor is FreeSync, not G-Sync so you will gain nothing from that technology. Still quite smooth with gsync off @144hz. Also tried it with ULMB (120hz on my monitor) and it was fine as well.
Not sure why you would want to keep frames above 144hz as mentioned in this thread. If you do, it defeats the purpose of freesync/gsync. The point is to have tear-free gaming without using normal vsync which will reduce your overall FPS if lower than the monitor refresh rate. As example, 60hz monitor with vsync but your FPS is 50. It will reduce it to 30 (this may be wrong, I am thinking 45 is the next step down). If your FPS is 28 (generally unplayable really) it will reduce it to 15 to keep in sync with the monitors refresh rate.
If you are a Nvidia guy, look at Gsync monitors. The XB270HU isn't that much more expensive considering the price point already, mine was $700 from B&H but Newegg has them on sale sometimes.
I find it hard to believe people here would try to talk you out of getting a nice monitor. If it was a 4k monitor then sure, you will need a 980ti to run games at a reasonable FPS. A 970 is great at 1440p, g-sync makes it even better. Stranger things has happened though, like somebody saying you had to download drivers for a haswell CPU to use speedstep and turboboost (you don't, it is BIOS controlled) from a shady site and everybody agreeing.