Be careful when buying a monitor or TV with HDMI 2.1: it can be 2.0 -!


Be careful when buying a monitor or TV with HDMI 2.1: it can be 2.0 -!: All the details about Be careful when buying a monitor or TV with HDMI 2.1: it can be 2.0 -! are on I am happy to present you all the developments about Be careful when buying a monitor or TV with HDMI 2.1: it can be 2.0 -!. Here’s what you need to know about Be careful when buying a monitor or TV with HDMI 2.1: it can be 2.0 -!, Here are the details … 2021 has been the year of the massive arrival of devices and displays compatible with HDMI 2.1 . The high-end Smart TVs launched this year with panels of 120 Hz equip it, and even some of 60 Hz also for the improvements offered by the gaming standard, such as VRR and ALLM . It is also equipped with PS5 and Xbox Series X , as well as graphics cards NVIDIA RTX 3000 and AMD RX 6000 . However, there are devices that claim to have that connectivity, but in reality it is a lie.

This is how they alert you from TFTCentral , the portal specialized in monitor analysis. The HDMI 2.1 connectivity is something that is seen more and more when buying a new screen, since it allows to output signals in 4K at 120 Hz, or 8K to 60 Hz , both in 10 uncompressed bits, thanks to higher bandwidth. They also offer support for Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM) , eliminating tearing and reducing latency when gaming.

HDMI 2.1 “should” have exclusive features

The HDMI 2.0 standard uses a signaling system called Transition Minimized Differential Signaling (TMDS) to offer up to 18 Gbps of bandwidth, supporting up to 4K at 60 Hz with a depth of 8 bits. With HDMI 2.1, Fixed Rate Link (FRL) is used to reach up to 48 Gbps , which allows you to enjoy 4K at 144 Hz to bits without compression, and even 10 K a 115 Hz with compression. HDMI 2.1 is compatible with both signaling systems, since the cables and connectors are backwards compatible to work with devices that only have HDMI 2.0.

Identify if a panel has Whether or not HDMI 2.1 is as straightforward as going to the specs. Or not. In TFTCentral they saw that the new Xiaomi monitor from 18, 5-inch Full HD with a refresh rate of 240 Hz counted with two HDMI 2.1 ports .

However, if we go down to the bottom, a text appears saying that it says the following:

«Due to the subdivision of HDMI certification standards, HDMI 2.1 is divided into TMDS (the bandwidth is equivalent to the HDMI 2.0 protocol) and FRL. The HDMI 2.1 interface of this product supports the TMDS protocol, the maximum supported resolution is 1920 × 1080 and the maximum refresh rate is 240 Hz ”.

Now you can call HDMI 2.1 what is HDMI 2.0

So, to For practical purposes, the monitor only has HDMI 2.0 as it does not support the FRL system of HDMI 2.1. Therefore, TFTCentral contacted the HDMI Licensing Administrator through to inquire about the certification of devices under the new standard.

The response of the organization did not help much . For starters, they claim that HDMI 2.0 is no more , and that devices shouldn’t be advertised as HDMI 2.0 compliant anymore. HDMI 2.0 capabilities are now a subset of 2.1 capabilities. Also, all new HDMI 2.1 functionalities are optional , such as FRL, VRR, ALLM and bandwidth improvements. Therefore, if a device says it has HDMI 2.1 ports, it has to say what functions it supports.

Therefore, according to this, all new devices released from now on they will be HDMI 2.1, although in reality they do not support any new functionality and only have what until now we knew as HDMI 2.0b. This is a nefarious way to advertise a product, as users now don’t have a way to quickly distinguish what, for all practical purposes, is really a new standard for all the changes it offers. That is precisely the goal of the new standards.

When a person sees that a monitor or television supports HDMI 2.1, even if you know that for example you will not have 4K at 120 Hz because the monitor is 1080 pa 144 or 240 Hz, what you can expect is that it supports functions like VRR or ALLM , but not actually present, even if I put HDMI 2.1. This, however, can be even more dangerous with 4K monitors at 120 or 144 Hz, since they can put that they have HDMI 2.1, but in reality they do not allow to achieve those refresh rates for HDMI, and do it only for DisplayPort.

In short, now we are going to have to look with a magnifying glass all the devices that we buy with HDMI 2.1 connectivity ; especially monitors and televisions. Most manufacturers are still sensible, naming HDMI 2.0 ports as such to avoid confusion. However, some like Xiaomi talk about HDMI 2.1 in products that do not have it, so you have to be more careful than ever, reading what functions each device, panel and cable supports, such as FRL, VRR, ALLM and a bandwidth from 48 Gbps.

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