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These four are the main I/O that you see. What are the pros/cons for each?

As far as I know HDMI 2.0 supports higher fps than earlier HDMI as well as that Display Port supports high fps. Besides that I'm not positive on why I would connect my monitor with a certain cable.

  • Maybe you add VGA? – Jet Sep 9 '15 at 23:19
  • Good call, I will add that. – Jordan Sep 9 '15 at 23:20
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    "Hardware Recommendations" was created for questions seeking a specific hardware products given a set of definitive requirements. If your question involved general computing or hardware issues, it can likely be asked on Super User; but nevertheless, it is outside the scope of this site. – Robert Cartaino Sep 16 '15 at 18:19
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    @Jordan, Check my answer: hardwarerecs.stackexchange.com/a/323/54 There is some useful info about DVI. – belford Sep 24 '15 at 16:16
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I'll start with VGA, which is, in my opinion, a "standard".

VGA is an analog signal. This basically means that the quality will not be as great as cables that make use of digital signals, especially at high resolutions. The problem with analog is that noise often distorts the signal and the quality ends up not being as good. So in terms of quality, go for the other three.

Digital signals do not have this problem because they are noise tolerant.

DVI is a digital signal that has a few different connecter types and two link modes:

  • DVI-A has an analog signal.
  • DVI-D has only a digital signal.
  • DVI-I has both, making it especially useful as it can be used with VGA-DVI adaptors

Most adaptors are single link and support a resolution up to 1920x1200 whereas dual link supports up to 2560x1600.

HDMI is the standard for HDTVs. It is also a digital signal and is therefore fully compatible with DVI-D and DVI-I. The benifit of HDMI over DVI is that is has the ability to carry audio as well as the video signal although it does require that your monitor has built in speakers. Recently, HDMI 2.0 was released and gives HDMI the ability to better deal with 4K (Ultra HD) displays at a higher frequency and FPS. If your display or TV has HDMI 1.4, you’ll be limited to 3,820×2160, 4K, at 30 Hz. However, if you’ve got a video card and 4K display with HDMI 2.0, you’ll be able to get 4K at 60 Hz.

There's not much difference between between HDMI 1.4 and DVI besides the audio in the HDMI, which can be a real benefit depending on your setup and that colour ranges for HDMI go beyond the RGB spectrum which DVI is limited to. The only benefit of the DVI is the physical screws that support the DVI cable and help prevent port damage.

DisplayPort is the newest of the lot and is aimed towards higher end monitors - newer and high-end monitors tend to have DisplayPort. Its designed to deal with 4K at higher FPS and Hz. DisplayPort is capable of 3840×2160, 8K at 60Hz or 4k at 120Hz!

DisplayPort looks like it's the way of the future, especially if you want 4K.

Generally it depends on your setup (monitor and graphics card), what you can and can't use but for the future of gaming DisplayPort looks the way to go.

References and more info:

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  • It would be worth mentioning about multi stream transport for display port. – Dreamwalker Sep 10 '15 at 8:30
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    Suggestion: you mention the various HDMI versions but not the DisplayPort versions - 1.3 was only approved in 2014 and is required for some of the really high end bandwidth capabilities, basically similar to HDMI 2.0 in 2013. The way it is worded now implies that DisplayPort is all the same whereas HDMI you have to worry about version, when in reality it is basically the same for both. – Adam Comerford Sep 23 '15 at 13:21
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There several differences between each cable. Display port supports 4k at high fps. HDMI can do 4k but only at 30 fps. The one benefit of using HDMI is that it can carry audio when VGA and DVI do not. DVI in single link can only do 1080p when in dual link can carry a higher resolution. There are several other differences also which you can read about here.If you are looking for a format for connecting your monitor go with DVI if working with 1080p but if you are using 4k you will want to use display port.

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