it's a 25" 21:9 ultrawide 60hz. However there is an extremely similar LG25UM58-P which has a default of 75hz.
So i asked myself.. Why would LG make 2 separate monitors, 2 separate LCD panels, and 2 driver boards.. all that wasted R&D... So i figured they're likely identical, just with different Firmwares.. One limited to 60hz, the other to 75hz.
So i set a custom resolution/refresh on all my connected computers, to do 2560x1080@75hz and it works great.
The only issue is when ever i use a new system or config, it defaults to 60hz since it's coded into the firmware of the monitor. But i just need to set a custom res/refresh to 75hz and all is well. ^_^
A lot of people don't realize they can overclock their LCD's refresh rate. If it doesn't work, the screen goes black or what ever error message, and windows will do that 15 second confirmation or what ever, so wait it out until it confirms/rejects. and all is well. Plenty of 120hz lcd's that can do 144hz.
A laptop i'm building that uses an ipad3-4 LCD, defaults at 40hz, i overclocked it to 50hz. though i can't seem to push it more, seems to be a limitation of the LCD driver board. But that's fine for it's purposes.