Too Many Monitor Ports to Distinguish?

Post on: 2021-09-10 Post Categories: HDMI to VGA Converter Share:

There are many types of display interfaces, and when buying a host and monitor, the type of interface is a factor we need to consider. At present, the interface of the monitor has DP, HDMI, VGA and DVI, which are all different in shape, and when we buy a host, we generally have to consider whether the graphics card interface of the host matches the monitor interface.

Too Many Monitor Ports to Distinguish

The current public version of the graphics card will have two interfaces HDMI and DP, but the general graphics card manufacturers will add a DVI interface on the card, but at present we buy a new monitor interface complete if it will also come with these three interfaces, VGA is currently eliminated, this is because the VGA transmission is an analog signal. So apart from the different shapes, what are the big differences between these interfaces?

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In terms of interface performance, the performance of monitor interfaces is DP>HDMI>DVI>VGA


VGA is an analogue signal which has now been phased out of the mainstream, which is why we can currently see the other three interfaces on the latest graphics cards but not the VGA interface, DVI, HDMI and DP are all digital signals and are the current mainstream. However, many of our older monitors still have a VGA interface, so from time to time we use an HDMI or other interface to VGA interface adapter.

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DVI is a high-definition interface, but without audio, which means that DVI video cabling only transmits the picture graphics signal, but not the audio signal. However, the DVI interface also has a number of disadvantages: as it was originally designed for the PC side, it is less compatible with TVs etc., only supports 8bit RGB signal transmission, and compatibility considerations have reserved a number of pins to support analogue devices, resulting in a larger interface size. At present, the better DVI interfaces are capable of transmitting 2K images, but this is basically the limit.

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HDMI is capable of transmitting both high-definition graphics picture signals and audio signals, which would normally be connected to a TV at home, and is highly resistant to interference. The current highest HDMI 2.1 standard, which supports 8K@60Hz and 4K@120Hz, can reach resolutions of up to 10K. Its also supports high dynamic range HDR and has increased bandwidth to 48Gbps.

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The DP interface is also an HD digital display interface standard that can be connected to a computer and a monitor, as well as to a computer and a home cinema. the DP interface can be understood as an enhanced version of HDMI, more powerful in terms of audio and video transmission. In the current situation, there is not much difference in performance between DP and HDMI. If you use 3840*2160 resolution (4K), HDMI can only transmit up to 30 fps due to lack of bandwidth, DP has no problem.

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Nowadays, the interfaces of monitors are generally DP, HDMI, VGA and DVI, of which VGA is an obsolete interface, although a few low-end monitors still have this interface. Most monitors have a VGA+DVI dual interface, and there are also VGA+HDMI dual interfaces. The DP interface can only be found on a few high-end monitors.


For the average user, a monitor with a DVI or HDMI interface is all that is needed. Monitors with a DP interface are generally more expensive, so if you do have demanding requirements for display picture quality, you can choose a monitor with a DP interface.