Asus, Samsung, and MSI get a jump on CES with world's first 4K OLED 240Hz 27-inch monitors
Anyway, as for Asus' alternative. This is the ROG Swift OLED PG27UCDM, which is a 27-inch monitor that uses a QD-OLED panel that can hit 240Hz while having a 0.03ms response time, as well as VESA DisplayHDR support, 400 True Black, 99% DCI-P3, true 10-bit colour, and even a DisplayPort 2.1a UHBR20 that promises an 80Gbps bandwidth.