Choose thebest video cable for monitorit is essential to ensure an impeccable visual quality, whether you are a video player looking for maximum fluidity, or that you need to set up a professional workplace dedicated to multimedia content. With the many interfaces available today, such asHDMI, DisplayPort, DVI, VGA and USB-C, understand which connection you support best your display can make a huge difference.
To make an accurate choice, it is essential to analyze the technical specifications, advantages and disadvantages of each video standard. In this in-depth guide we will explore in detail the different connectivity options, helping you to locate the perfect cable to achieve excellent resolution and maximize the potential of your video card and screen.
The main video interfaces for monitors: features and differences
We analyze the five most popular display connection ports on the market, proposing a clear synthesis of their technical specifications and maximum performance guaranteed:
| Door / Interface Type | Last Version | Type of Signal | Maximum resolution | Connector Lockable |
| VGA | – | Analog | 1920 x 1080 @ 60Hz | Yes |
| D | DVI-D Dual Link | Analog / Digital | 2560 x 1600 @ 60Hz | Yes |
| HDMI | 2.1b | Digital | 7680×4320 (8K) @ 60Hz | No |
| Display | 2.1 | Digital | 7680×4320 (8K) @ 60Hz | No |
| USB-C | Thunderbolt 4 | Digital | 7680×4320 (8K) @ 60Hz | No |
Cable VGA
The connectorVGA (Video Graphics Array), launched historically by IBM in 1987, is the most dated standard.1Originally designed for the old cathodic tube monitors (CRT) of the 1990s, it transmits only analog signals. This technical limitation drastically reduces the ability to support high definition resolutions and high frame rate, making it unsuitable to modern LCD, LED or OLED displays.
The analog signal of the VGA cable also undergoes aprogressive degradation of visual quality when the resolution increasesand cable length itself.2While managing a maximum resolution of 1920 x 1080 (Full HD), the sharpness of the image undergoes obvious compromises. Today the use of the VGA port is mainly relegated to old company projectors or hardware systems dated.
Cable DVI
The interfaceDVI (Digital Video Interface), introduced at the end of the 1990s, marked the passage from analogy to digital age for video cards. Similarly to VGA, the DVI cable does not carry the audio stream, limiting itself to the video component. There are three main configurations:DVI-A(only analogue),DVI-D(only digital) andDVI-I(designed to manage both digital and analog signals).
While the analogue variant DVI-A is now completely obsolete, the standardsDVI-DandDVI-Iremain functional and are divided into versionsSingle-LinkandDual-Link.3The Dual-Link connections, thanks to the additional pins, double the bandwidth and can support more demanding resolutions, such as 2560 x 1600 at 60Hz and the 1080p format up to 144Hz. However, for 4K gaming or high-definition display, the use of DisplayPort or HDMI is now a mandatory choice.
HDMI port
The standardHDMI (High-Definition Multimedia Interface), developed and marketed since 2003, is universally recognized for its ability to transfer, through a single cable, both digital video signal and uncompressed audio. The exceptional versatility has made this connection the absolute standard for smart TV, PC monitors, home theater systems and video game consoles.
The continuous evolutions of the HDMI format ensured more and more extraordinary performance. Version 1.4 offers 10.2 Gbps bandwidth, while theHDMI 2.0touches the 18 Gbps, ensuring the native reproduction of4K to 60 fps. The decisive generational jump is represented by the standardHDMI 2.1b, designed to support impressive data volume and support incredible resolution8K at 60Hz. Miniaturized variants are also available on the market, such as Mini and Micro HDMI, or handy USB-C adapters to HDMI, ideal for notebooks and ultra-thin devices.
USB-C and Thunderbolt connection
The doorUSB-Cit is set as the ultimate and most versatile interface of the tech panorama. In addition to perfectly managing high-definition video and audio streams, it is able to transfer heavy files and reload devices simultaneously (Power Delivery). Initially driven by Apple in MacBook, its multifunctionality has decreed its global success on laptops, tablets, smartphones and PCs of each brand.
A huge ergonomic value of USB-C connectors is their reversibility. Technically, premium versions that integrate technologyThunderbolt 4orUSB4ensure a stunning bandwidth up to40 Gbps. This allows you to easily connect display8K at 60Hzor monitor4K to 120Hz, while transmitting up to 100W of power. The only weakness in competitive gaming is possibleincompatibility with Adaptive-Sync technology, which in some sets-ups can generate screen tearing phenomena despite high refresh frequencies.
| USB-C interface | Release Date | Maximum Data Transfer Speed | PIN | Resolutions and Refresh Rate Supported |
| USB 4 | March 2019 | 40 Gbps | 24 | 8K to 60 Hz, 4K to 120 Hz, 1440p to 144 Hz, 1080p to 240 Hz |
| Thunderbolt 2 | February 2011 | 20 Gb | 20 | 4K to 60 Hz, 2K to 120 Hz, 1080p to 240 Hz |
| Thunderbolt 3 | June 2015 | 40 Gbps | 20 | 8K to 60 Hz, 5K to 120 Hz, 4K to 144 Hz, 1080p to 240 Hz |
| Thunderbolt 4 | March 2020 | 40 Gbps | 20 | 8K to 60 Hz, 5K to 120 Hz, 4K to 144 Hz, 1080p to 360 Hz |
Display
The cableDisplayrepresents the top interface to get uncompromising video and audio output. Currently, it is the only standard on the market designed to scale comfortably to the majestic resolution8K native with a high color depth. These incredible performances crown him with no doubt as the preferred choice for PC gaming monitors and for those who use high-end graphics cards.
Born and perfected in several hardware revisions (from 1.2 to revolutionary 2.1), DisplayPort easily transfers both video and audio data.4Already standard 1.2 offered 17.2 Gbps (perfects for 4K at 60Hz), but withDisplayport 1.4the band sketches at 25.92 Gbps, enabling fluidity of the4K at 144Hz. Today, the technological apex isDisplayPort 2.1: with an immense transmission capacity equal to80 Gbps, effortlessly supports display8K at 165Hzor experimental panels in16K (15360×8640) at 60Hz.5Not to underestimate the excellent integration of technologyMulti-Stream Transport (MST), which allows you to connect multiple cascading monitors using only one starting port.6
| DisplayPort version | Supported speed | Supported resolution |
| DisplayPort 1.0 | 2.7 Gbps | 2560 x 1600 to 60 Hz |
| DisplayPort 1.2 | 5.4 Gbps | 3840 x 2160 to 60 Hz |
| Displayport 1.4 | 8.1 Gbps | 7680 x 4320 to 60 Hz |
| DisplayPort 2.0 | 20 Gb | 7680 x 4320 to 144 Hz or 10240 x 4320 to 60 Hz |
| DisplayPort 2.1 | 80 Gbps | 7680 x 4320 to 165 Hz or 15360 x 8640 to 60 Hz |
Choose the optimal video connection: which cable to buy?
The final decision on buying the ideal video interface must be guided strictly by the use you will make of your screen and the devices you own. Since historical standards such as VGA and DVI are now obsolete for new hardware builds, we will focus attention on the protagonists of the market: HDMI, DisplayPort and USB-C.
- Domestic use, TV and Home Theater (HDMI):If your goal is to connect smart TV, decoder, soundbar or Blu-Ray playerHDMIis the most versatile and compatible solution. Veicolando perfectly audio and video, is the universal standard of the living room. HDMI 2.0 and 2.1 cables handle signals in 4K and 8K, satisfying any multimedia need.
- Competitive Gaming and High-end PC (DisplayPort):Gaming enthusiasts who demand the best performance in absolute — maximum resolutions, extreme refresh rates (144Hz, 240Hz, 360Hz) and support for synchronization technologies such as G-Sync or FreeSync — must aim directly onDisplay. In addition to being the native standard of the latest graphics cards, it is essential to assemble complex multi-monitor configurations.
- Professional configurations, Notebooks and Productivity (USB-C):For those who work from a modern laptop or MacBook and want to broadcast videos, audio, data and recharge the battery via a single essential cable, the portUSB-C (Thunderbolt)is an authenticgame-changer. The convenience of connectivity is unparalleled in office and productivity, although for pure gaming the absence of a guaranteed support for Adaptive Sync can direct your choice elsewhere.
Below we offer a comfortable summary table to quickly match the correct interface to the ideal scenario:
| Door / Interface Type | Best Use scenarios |
| VGA | Legacy use, old office computers, projector connection and CRT monitor |
| HDMI | Gaming on consoles, Smart TV, home theater systems, audio/video connections |
| D | Dated PC stations, connection of old digital monitors up to 1080p |
| USB-C (Thunderbolt 4) | Extreme mobility versatility, laptop docking station, simultaneous power connection, video and USB hub |
| DisplayPort (2.1) | Gaming on competitive PC, multi-monitor configurations, high performance video cards, extreme refresh rate |
Frequently Asked Questions (FAQ) about Video Connections
Is it better to use HDMI or DisplayPort for a gaming monitor?
For gaming on PC, connectionDisplayis generally higher than HDMI. The DisplayPort ports offer a native bandwidth greater than the majority of HDMI variants, supporting very high refresh rates and ensuring maximum compatibility for variable frame sync technologies such as AMD FreeSync and NVIDIA G-Sync, preventing image tears or artifacts.
Can I connect an old VGA monitor to a modern computer with only HDMI?
Yes, the operation is absolutely possible, but a simple mechanical cable is not enough. Since the HDMI transmits an exclusively digital video stream and the VGA uses an analog signal, you will need to get aactive adapter HDMI-VGA. This device integrates a digital-analog converter (DAC) that correctly translates the real-time signal to the screen.
Does a USB-C cable guarantee the same visual quality and performance as a DisplayPort port?
Absolutely yes, provided the Type-C port of your computer supports the standardDisplayPort Alternate Mode (DP Alt Mode)or technologyThunderbolt 3/4. In these specific cases, the USB-C interface “instrada” physically a real high-band DisplayPort signal, thus offering you the identical, superlative visual quality and high refresh rate, without loss or quality compromise.
