Intel i7-3770, HD4000 Graphics Does Not Support Dual-Link DVI

Started Aug 21, 2012 | Discussions thread
Jim Cockfield Forum Pro • Posts: 16,342
Nope (HD 4000 DVI won't support resolutions that high)...

Apparently, HD 4000 won't support resolutions that high via DVI from what I can see reading reviews about it's design.

For example, note the "2012 Display Overview" section on Display Support on this page:

http://www.xbitlabs.com/articles/graphics/display/intel-hd-graphics-4000-2500_2.html

"Moreover, there are a few limitations in resolutions and monitor connection types. Theoretically, a desktop system on an Ivy Bridge processor can offer three outs: the first one - a universal out (HDMI, DVI, VGA or DisplayPort) with maximum resolution of 1920x1200, the second one – a DisplayPort, HDMI or DVI with up to 1920x1200 resolution, and the third one – a DisplayPort supporting higher resolutions up to 2560x1600. In other words, a popular connection option when WQXGA monitors are connected to Intel HD Graphics 4000 via Dual-Link DVI is still unavailable"

IOW, it will support up to 2560 x 1600 via a DisplayPort, but not via DVI.

In theory, you can Daisy Chain via a DisplayPort. But, the U2711 isn't designed for Daisy Chaining anyway (and I don't think any of the new DisplayPort 1.2 hubs are shipping yet either).

Also, even if they were shipping, the HD 4000 is based on providing DisplayPort 1.1a, and you need Display Port 1.2 for Daisy Chaining or using hubs for multiple monitors with resolutions that high. So, he's out of luck using that approach, too.

Since it sounds like the OP wants to use a setup with dual U2711 Displays. I'd probably just grab something like an inexpensive Nvidia GT 640 card or similar with either two DVI ports, or a DisplayPort and a DVI Port (or some of the more expensive cards come with two DisplayPorts).

Or, if he wants to take advantage of 10 bit per channel color for something like CS6, move up to one of the Pro cards with two DisplayPort connections instead (e.g., an Nvidia Quadro 2000 or ATI FirePro V4900 card equipped that way, since you need the Pro Cards and drivers to get a 10 bit per channel color pipeline).

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JimC

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