Acer Nitro XV2 is the world's fastest monitor at a bonkers 390Hz | OC3D News (overclock3d.net)
 
Acer has just revealed their fastest monitor to date, their blitzing fast Nitro XV2 series XV252QF, a 390Hz display that's FreeSync Premium Pro certified and uses an IPS-type AUO AHVA screen. This monitor uses a 24.5-inch 360Hz IPS-type panel that's overclockable to 390Hz, offering users an ultra-fast 1080p experience with 0.5ms G2G response time. This screen has a maximum refresh rate that's 6.5x faster than standard 60Hz PC displays, making this screen ideal for competitive gaming applications. Acer has also fitted this Nitro XV2 display with thin bezels and a highly adjustable stand. 

With FreeSync Premium Pro support, users of the Acer Nitro XV252QF can expect variable refresh rate support with a range of 48-390Hz and support for HDR. HDR support is expected to be basic, as the HDR specifications of this monitor remain unavailable on Acer's website. This monitor is designed to allow games to be played at the fastest possible framerate and with minimal display latency, delivering smoother gameplay experiences while also offering users a competitive advantage over their opponents. That said, achieving such absurdly high refresh rates is not an easy task, as such high framerates require incredible levels of CPU optimisation and powerful graphics cards to achieve. 

At this time, the pricing and release date of  Acer Nitro XV252QF remains unknown, though we expect this monitor to cost over £600. 
 
Personally I think that is expensive for a 24.5 inch monitor