Asus Republic of Gamers Swift PG279QM 27" 16:9 G-SYNC 240 Hz QHD HDR IPS Gaming Monitor - Manual (Page 32)

3-14 Chapter 3: General Instructions
3.6 Supported operating mode
HDMI input
Resolution Frequency Frame Rate Remark
640 x 480 60Hz
800 x 600 60Hz
1024 x 768 60Hz
1920 x 1080 P 60Hz
1920 x 1080 P 50Hz
1920 x 1080 P 24Hz
1280 x 720 P 60Hz
1280 x 720 P 50Hz
720 x 480 P 60Hz
720 x 576 P 50Hz
640 x 480 P 60Hz
1920 x 1080 P 120Hz
2560 x 1440 60Hz
Only Supported when color format is RGB/ YUV444
in 8-bit/12-bit and YUV422 in 12-bit color depth.
2560 x 1440 120Hz
Only Supported when color format is RGB/ YUV444
in 8-bit and YUV422 in 12-bit color depth.
2560 x 1440 144Hz
Only Supported when color format is RGB/ YUV444
in 8-bit and YUV422 in 12-bit color depth.
Note:
Do not support interlace and color gamut YUV420.
DisplayPort input
Resolution Frequency Frame Rate Remark
640 x 480 60Hz
800 x 600 60Hz
1024 x 768 60Hz
2560 x 1440 60Hz
2560 x 1440 100Hz
2560 x 1440 120Hz
2560 x 1440 144Hz
2560 x 1440 200Hz
Only support when color format is RGB/ YUV444
in 8-bit and YUV422 in 8-bit color depth
2560 x 1440 240Hz
Only support when color format is RGB/ YUV444
in 8-bit and YUV422 in 8-bit color depth
Note:
Do not support interlace.
G-SYNC (only for DisplayPort input) supported NVIDIA GPUs: NVIDIA Pascal GPU Graphics Card
like GTX1070, GTX1080 and GTX1080 Ti or higher.
For other GPUs, please contact the manufactures to see if they are compatible.