Can you imagine that a small HDMI video transmission cable costs more than 2,000 yuan? Maybe some friends will say that this kind of thread can be bought for more than ten yuan, and selling it so expensive must be a profiteer! Don't tell me, it's really not the case, so what's the difference between a video transmission line worth more than ten yuan and a video transmission line worth thousands of yuan? This article tells you the answer.
Let’s first look at the video transmission protocol. Currently, most of the cheaper HDMI video transmission lines on the market use the HDMI 2.0 protocol. The more expensive HDMI video transmission lines generally use the HDMI 2.1 protocol. Even though there is only a “0.1” gap between the two, the difference is quite obvious. The maximum transmission bandwidth of the HDMI 2.0 protocol is 18Gbit/s. In theory, it supports up to 4K 60Hz display. HDMI The transmission bandwidth of the 2.1 protocol is as high as 48Gbit/s, supporting 8K 60Hz or 4K 120Hz display.
Let’s look at the wire material. HDMI video transmission lines mainly include shielding layer, wire core, outer covering layer, and connectors. Most HDMI video transmission lines are made of aluminum foil, braided material, and ground wire to form a shielding layer. The wire core is generally made of tinned copper, and the outer covering layer is mostly made of PVC material. HDMI video transmission cables that cost thousands of yuan are made of more sophisticated materials. The core is generally made of optical fiber , and power management IC and photoelectric conversion modules are also added to ensure higher quality video transmission.
Another factor that affects the price of HDMI video transmission cable is the length of the cable. Take Fibber 8K For example, the price of an HDMI video transmission line is 2,699 yuan for a 1-meter length, 3,599 yuan for a 2-meter length, and as high as 17,999 yuan for a 20-meter length. This is because during the signal transmission process, as the length of the cable increases, the signal attenuation will become more obvious, so a thicker wire core and a stronger shielding layer are needed to offset the attenuated signal. This is why you should choose high-quality products when purchasing longer HDMI video transmission lines.
So do we really need to spend thousands or even tens of thousands of dollars for an HDMI video transmission cable? In fact, it mainly depends on the parameters of the display device. If the resolution of the display device is only 1080P, an HDMI video transmission cable of about 10 yuan can meet the needs. However, if your display device has a 4K resolution, I recommend choosing a higher specification HDMI video transmission cable. Otherwise, it will not be able to display full frames due to insufficient transmission bandwidth. 4K 30 frames is fine for watching videos, but if it is used to operate a computer, it will obviously feel stuck. Only by lowering the resolution can it run full 60 frames.
Some friends may ask, who would spend more than 10,000 yuan to buy an HDMI video transmission cable? In fact, this type of cable is generally used for commercial purposes, especially in scenarios that have high requirements for display effects. Therefore, you must be particularly careful when you see a thick and long HDMI video transmission cable, because its price is often not cheap.
There is no doubt that the display effect of the HDMI 2.1 protocol will completely overwhelm HDMI 2.0. However, the HDMI 2.1 protocol needs to be supported by both the display device and the computer device. Currently, the HDMI 2.1 protocol is mainly used in home TVs. In addition to high-specification graphics cards, PS5 and Xbox Series X also support HDMI 2.1. If you own these devices, the author recommends purchasing one that supports HDMI 2.1 protocol video transmission line, so that the corresponding equipment can perform as it should, but if you don't have these equipment, there is no need to spend all this money.
