If you're looking for a high-performance monitor with AMD Radeon FreeSync technology, the Dell 27-inch Screen LED-Lit Gaming Monitor is an excellent choice. It has a refresh rate of up to 155Hz and features a 1ms response time to reduce ghosting and streaking.
It has an excellent 2K QHD resolution that allows you to play video games at their highest quality. There is an aspect ratio of 16:9 that ensures that you get multiple windows open at once and compare different windows side by side without any issues.