Many companies cheap out on the supporting electronics. In particular single-link DVI is electrically compatible with HDMI but is limited to ~1920 x 1200 @ 60H

Many companies cheap out on the supporting electronics. In particular single-link DVI is electrically compatible with HDMI but is limited to ~1920 x 1200 @ 60Hz. Basically instead of properly implementing HDMI they route a single-link DVI transceiver through an HDMI connector and call it good.