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There are many types of display interfaces. When buying a host and monitor, you need to consider type of interface. Currently, monitor interfaces include DP, HDMI, VGA, DVI, and forms of these interfaces also vary. We When buying a host, it is generally necessary to consider whether interface of host's video card matches that of monitor. For example, if your graphics card interface is HDMI+DP and your monitor only has a VGA interface, this can be confusing. Grasshopper is here today to give you some knowledge of display interface, hope you find it useful!

At present, public version of graphics card has HDMI and DP ports, but conventional graphics card manufacturer will add a DVI interface to graphics card, but currently, if we buy a new display with full interfaces, it will also have these three interfaces, VGA in currently excluded because VGA carries analog signals. So, besides different forms, what is big difference between these interfaces?

In terms of interface performance, the display interface performance is as follows: DP>HDMI>DVI>VGA.

VGA interface

Among them, VGA is an analog signal that has been abandoned. This is why we see three other interfaces on recent graphics cards, but not a VGA interface. All DVI, HDMI and DP are digital. signals current mainstream. However, many of our older monitors still have a VGA interface, so we often use an HDMI or other interface adapter for VGA interface.

DVI interface

DVI is a high-definition interface but without audio, meaning that DVI video cable only carries graphic image signals and does not carry audio signals. However, DVI interface also has many disadvantages: since it was originally designed for PCs, it is not compatible with TVs, it only supports 8-bit RGB signal transmission, and for compatibility reasons, many pins are reserved to support analog equipment, resulting in a larger interface . Currently, relatively good DVI interface can carry 2K images, but this is practically the limit.

HDMI

HDMI can carry both high-definition graphics and audio signals. As a rule, TV is connected at home and has reliable protection against interference. The current highest HDMI2.1 standard supports 8k 60Hz and 4k 120Hz, and resolution can reach 10K. It also supports HDR High Dynamic Range and bandwidth has been increased to 48Gbps.

DP interface

The DP interface is also a high-definition digital display interface standard that can be connected to a computer and a monitor, or a computer and a home theater system. The DP interface can be thought of as an extended version of HDMI, which is more powerful in audio and video transmission. In current situation, there is not much difference in performance between DP and HDMI. If you use 3840*2160 (4K) resolution, HDMI can only transfer 30 frames maximum due to insufficient bandwidth, and DP is not a problem.

Summary: what are monitor connections?

Currently, monitor interfaces are typically DP HDMI VGA DVI. Among them, VGA is a legacy interface, but some low-end monitors still have this interface. Most monitors have dual VGA+DVI interfaces, and there are also dual VGA+HDMI interfaces. The DP interface can only be seen on a few high-end monitors.

For general users, if monitor has a DVI or HDMI interface, the price of a monitor with a DP interface is generally higher. If you have really strict requirements for image quality, you can choose a monitor with DP. interface.