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I want to connect an Eizo monitor to a Windows 7 computer. It is connected through a DVI-D single link cable, plugged into the single link DVI-D port. When setting the screen resolution to 2560x1440, the screen gets all blurry and unreadable. How can I solve this? Do I need to plug the cable into the dual link port?

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  • Yes. See gronostaj's answer. He did not write a yes, but I'm sure you understand he meant that. – LPChip Jan 24 '15 at 16:40
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From Wikipedia article on DVI:

In single-link mode, the maximum pixel clock frequency is 165 MHz that supports a maximum resolution of 2.75 megapixels (including blanking interval) at 60 Hz refresh. For practical purposes, this allows a maximum 16:10 screen resolution of 1920×1200 at 60 Hz.

To support higher-resolution display devices, the DVI specification contains a provision for dual link. Dual-link DVI doubles the number of TMDS pairs, effectively doubling the video bandwidth. As a result, higher resolutions up to 2560 × 1600 are supported at 60 Hz.

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