Some adapters/cables aren't capable of converting 60Hz at High Resolutions.
You will need an "Active" Dual Link Adapter. But I haven't been able to find any HDMI>DVI-D that support Resolutions higher than 1920x1200 Resolutions which are really using Single Link DVI instead of Dual Link DVI.
So depending on your HDMI>DVI Adapter or cable it depends on what Hz it will run at on which specific High Resolutions.
What is the exact Make & Model of your HDMI>DVI-D Adapter?
Does it mention that it supports 2560x1440 at 60Hz or 30Hz?