They refuse to adjust to 75hz because the display can't handle it.
They refuse to adjust to 75hz because the display can't handle it.
AFAIK HDMI 1.2 supports up to 1920 x 1080p at 60Hz, and 2560 x 1440p at 30Hz. The quality can vary based on the color format selected, but it's uncertain exactly how much extra you'll get.
This should work on your PC. The page you shared confirms HDMI 1.4 and DisplayPort 1.2 support. According to the Wikipedia entry, HDMI 1.2 covers similar resolutions as HDMI 1.0, though with some differences. However, the available options seem comparable. It looks like your cable isn’t powerful enough for that setup. Your PC’s port also doesn’t meet the requirements. Windows has reported issues with this configuration before. Based on the information from laptop brands and Intel/Graphics Tech pages, achieving 2560x1440 at 75Hz would need a CPU with at least an 11th generation or newer. DisplayPort is likely a better choice, while HDMI 1.2 is outdated for modern laptops.