When you buy a new monitor, you should look at many parameters, such as resolution, response time or refresh rate, among others. But what about the video connectors? that you know thats HDMI and DisplayPort ports they can be negatively affecting image quality displayed on the screen, and the monitor may not be to blame.
Not only the version of the video connector of our monitor matters, but also that of the graphics card. If the monitor has a newer version of the interface and the one with the graphics is older, we will be limited to the “worst”. It is for this very reason that you should know the version of the video connector of the graphics card and the monitor.
DisplayPort and HDMI greatly affect image quality
The big problem we face is that we canaccumulate three or four versions of the same connector. Something that generates that we can acquire a monitor that is not “compatible” with the video output interface of the graphic. What happens in these cases is that we have a “loss” of performance or benefits.
We have on one side HDMI port, which was developed by a large number of consumer electronics manufacturers, as well as monitor and graphics manufacturers. has become a industry standard and it is present in televisions, monitors, motherboards, graphics cards, projectors, consoles and many, many other products. The big drawback of this connector is that it has royalties, you have to pay to use it and to certify it.
On the other hand, we have the display port, which has significant improvements over HDMI. Above all, it highlights for allowing data and video transfer simultaneously. In addition, it currently offers compatibility with Thunderbolt and USB-C, so its use is spreading. As its main strength, it is an open standard, so manufacturers do not have to pay royalties to use it.
HDMI and DisplayPort they are updating to support the needs of the industry. Each new version receives backwards compatibility with previous versions of the standard, but there is no chance of it being the other way around. This means that we can find products with very old versions of the standard that affect the final performance.
An example would be HDMI 2.1, which offers support for 4K @ 144 Hz without the need for video compression. The HDMI 2.0b version supports up to 4K @ 60 Hz without compression and 4K @ 120 Hz with compression. Here we can see the great difference that exists.
Difficulties in choosing monitor and other components
Something that is often given a lot is the lack of information from the manufacturers and, in many cases, they encourage mistakes. As we see in the previous table, HDMI supports 4K since version 1.3, but with important limitations.
Many manufacturers do not indicate the version of HDMI and DisplayPortbut they do indicate 4K support. This is a problem, because not all thumbs are fingers, but not all fingers are thumbs. The hiding of the version of both video connectors is a very bad sign, since it could carry an obsolete version that does not work for us.
Let’s imagine that we buy a graphics card NVIDIA RTX 3080 12GB GDDR6which has one HDMI 2.1 port and three DisplayPort 1.4a. Now suppose we can move all the games we can offer 4K @ 144 Hz. Turns out we bought a monitor and this is HDMI 1.4bwhich offers support at most 4K@120Hz. This causes performance to be compromised.
Luckily DisplayPort is less susceptible to this problem, because it’s already targeted at 1440p and 4K resolutions. The problem is greater in HDMI, which has versions that do not support 4K and has limited support for 1440p.