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