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I will have a server with a great GPU around 20 meters away from my pc (iMac 27"). I would like to run windows on the server to play from my iMac a game running on the server. (running windows on a server will be the downside of this project).

My monitor is at 2560*1440, will i be able to play at such a resolution over a 20 meter mini display port cable?

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Google is your friend:) – David Murray Jul 19 '12 at 19:56

DisplayPort is dynamic and can adapt to cable length, but not quite to the length-resolution pair you want:

WikiPedia:

  • Link training with adjustable amplitude and preemphasis adapts to differing cable lengths and signal quality
    • Reduced bandwidth transmission for 15 meter cable (at least 1920×1080p60, 24 bpp)
    • Full bandwidth transmission for 2 meter cable

DisplayPort.org:

Q: What is the maximum length of DisplayPort cable that supports a resolution of 2560×1600?

A: 2560 x 1600 (WQXGA resolution) is supported over all 2-meter “DP Certified” cables. Some cables, due to their design, may be capable of supporting 2560 x 1600 resolution over lengths longer than 2 meters.

You may be able to use an extender/booster/repeater/etc. though:

icron:

Q7: What is the maximum length of a DisplayPort cable?

A7: Standard DisplayPort cables are up to 15 meters (50 feet) in length. DisplayPort extender technologies, using Cat 5 or Fiber, extend this distance to over 100 meters (330 feet). Icron’s USB over DisplayPort technology is compatible with standard DisplayPort cables and DisplayPort extenders.

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