Designer’s Hardware Essential IV [Video Ports]


Designer’s Hardware Essential [Video Ports]


A quick overview of video ports

  1. VGA (Video Graphics Array)
  2. HDMI (High Definition Multimedia Interface)
  3. DP (DisplayPort)

VGA (Video Graphics Array)

VGA is the most common but old-school video port, because its output resolution and frame rate are limited (max out at 1080p (1920×1080) at 60fps).

VGA Port

A few years ago, VGA is still the standard video port for business laptop, but right now it is gradually replaced by video ports such as HDMI and Display Port for their larger resolution, higher frame rate, and more colors support.

Thinkpad Business Laptop t430 features only one video port (4. VGA)

HDMI (High-Definition Multimedia Interface)

HDMI is currently the most popular multi-media port. It integrates both video and audio output. The majority of laptop’s built-in HDMI ports is 1.4 version which maxes out at 1440p resolution (2560x1440p) at 60 frames per second (standard monitor frame rate), while it only can support 4k (3840×2160) resolution at only 30 frames per second.


HDMI Forum just announces 2.0 version in 2017 which supports conventional 4k (3840×2160) and 4k 3D resolution at 60 frames per second. However, because 2.0 version has recently announced, the latest HDMI version for laptops is still 1.4.


HDMI bandwidth 


HDMI supported resolution and frame rate (Wikipedia)

DP (DisplayPort)

DP is the newest digital display interface. It supports larger resolutions, higher frame rate per second, and more colors than HDMI.




DisplayPort 1.3 version was approved in 2014 which can drive 4k (3840×2160) at 120 frames per second with 24-bit RGB color or 8k at 60 frames per second. It also supports dual 4k displays at 60 frames per second.


DisplayPort bandwidth


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