Question about ASUS ROG Strix XG258Q

In this monitor with a Nvidia card you cannot use freesync, but you can use everything else. And with a 240hz refresh rate monitor you probably don't need the freesync or anything else. And yes it is possible to have 240hz without any other options enabled via Display Port. Please note that ELMB does not work at 240hz only at 144hz. It's a very good screen at very low price, get it!