Monitor Ports: HDMI, DisplayPort, USB-C Explained

HDMI: the universal standard

HDMI is the most widely used video interface, and the HDMI versions article explains how each version differs. It is built into TVs, projectors, game consoles, set-top boxes, and nearly every monitor sold today. The HDMI 2.2 specification, released by the HDMI Forum, supports bandwidth up to 96Gbps and resolutions including 8K60 and 4K240 with full chroma and 10-bit or 12-bit color. It also supports resolutions up to 10K, 12K, and 16K.

The HDMI 2.2 specification adds several gaming features. Variable Refresh Rate (VRR) lets a gaming source deliver frames as fast as it can, reducing lag, stutter, and frame tearing. Auto Low Latency Mode (ALLM) automatically sets the ideal latency setting. Quick Frame Transport (QFT) reduces latency further, and Quick Media Switching (QMS) eliminates delays when switching frame rates.

HDMI 2.2 is backward compatible with earlier versions, so older devices will still work. For HDR, HDMI supports Dynamic HDR, which adjusts brightness and color on a scene-by-scene basis, and Source-Based Tone Mapping (SBTM), which lets the source device perform part of the HDR mapping. If you connect a Windows PC to an HDR10-capable display over HDMI, Windows can detect and enable HDR automatically.

For most home and office setups, HDMI is the safest choice because it works with virtually any device. If you are buying a monitor for a gaming console or a home theater PC, look for a model with HDMI 2.2 or at least HDMI 2.1 to get the full bandwidth and VRR support. For high refresh rate gaming, see the 120 Hz monitors and 144Hz monitors guides.

One thing to check is the cable: HDMI 2.2 requires the Ultra96 cable to reach the full 96Gbps bandwidth, while the older Ultra High Speed Cable tops out at 48Gbps. Use a certified cable that matches the bandwidth rating of your monitor and source.

• Supports up to 96Gbps bandwidth with HDMI 2.2
• Includes VRR, ALLM, QFT, and QMS gaming features
• Backward compatible with earlier HDMI versions
• Ultra96 cable required for maximum bandwidth

DisplayPort: the PC-centric interface

DisplayPort is the interface you will find on most desktop graphics cards and many high refresh rate monitors. It is designed to carry high bandwidth video and audio over a single cable, and it is the primary interface for G-SYNC displays. NVIDIA G-SYNC monitors use a DisplayPort connection to deliver variable refresh rate (VRR) and variable overdrive for tear-free, stutter-free gaming. Learn more in the DisplayPort and G-SYNC articles.

DisplayPort supports multiple display protocols through the USB-C connector as well. The USB4 specification, which builds on the Thunderbolt protocol, allows a single USB-C cable to carry DisplayPort data along with USB data and power. This means you can connect a monitor that has a USB-C input to a laptop and get video output and laptop charging over the same cable.

G-SYNC comes in three tiers. G-SYNC ULTIMATE uses the top NVIDIA processors for the best experience with HDR and low latency. G-SYNC uses a dedicated processor for full VRR range and variable overdrive. G-SYNC Compatible monitors use standard DisplayPort or HDMI connections and are validated by NVIDIA to provide a good basic VRR experience. Not all monitors have all features, so check the manufacturer specifications.

DisplayPort is the preferred choice for PC gamers because it supports the highest refresh rates at high resolutions, especially when combined with a G-SYNC or adaptive sync capable monitor. For 144Hz or 240Hz gaming, a DisplayPort connection will give you the cleanest signal path. See the gaming monitors guide for models with DisplayPort inputs.

• Standard on desktop graphics cards
• Native support for G-SYNC VRR technology
• Carries video, audio, and data over one cable
• Good choice for high refresh rate PC gaming

USB-C: video, data, and power in one cable

USB-C is the most versatile port on a modern monitor. It uses the USB Type-C connector and can carry video, data, and power over a single cable. Thanks to USB Power Delivery, a monitor with a USB-C input can charge a laptop while displaying content, eliminating the need for a separate power adapter. For a deeper dive, see the USB-C monitors article.

USB4, the latest USB specification, enables the highest USB bandwidth available and supports multiple simultaneous data and display protocols. It is backward compatible with USB 3.2, USB 2.0, and Thunderbolt 3, so a USB4 monitor will work with a wide range of laptops and tablets. The USB4 architecture lets the host device share a single high-speed link between data and display traffic.

The ENERGY STAR buying guidance notes that some monitors with USB-C or Thunderbolt ports can charge your computer and display content through a single connection. This is ideal for a portable monitor or a clean desk setup where you want fewer cables. If you use a laptop as your main computer, a USB-C monitor is often the most convenient option.

USB-C ports vary in what they support. Some monitors have a USB-C port that only carries video, while others support full USB Power Delivery up to 240W per the USB PD Revision 3.1 specification. Check the monitor's spec sheet to confirm the power delivery rating and the supported USB data speed, especially if you plan to charge a large laptop.

• Single cable for video, data, and power
• USB PD supports up to 240W with USB4
• Backward compatible with USB 3.2 and Thunderbolt 3
• Best for laptops and portable monitors

Which port should you choose?

The best port depends on your source device and your use case. If you are connecting a game console, a streaming box, or a desktop PC with an HDMI output, HDMI is the natural choice. For a PC gamer who wants the highest refresh rates and G-SYNC support, DisplayPort is usually the best option. And if you use a laptop, a monitor with a USB-C port will let you connect and charge with a single cable.

For office work and general use, any of the three ports will work, but USB-C offers the convenience of a single cable. If you are buying a monitor for a multi-monitor setup, check how many DisplayPort or HDMI inputs it has, because some monitors only include one of each.

When you are shopping for a monitor, look for the ports that match your current devices and any you plan to buy in the near future. If you want to play games at 144Hz or higher, make sure the monitor supports that refresh rate over the port you plan to use. For HDR content, verify that the port and the monitor both support HDR10 or DisplayHDR; the DisplayHDR specification sets minimum requirements for luminance, color gamut, and bit depth, so a certified monitor will deliver a consistent HDR experience. Learn about refresh rate and HDR monitors for more.

For a portable monitor, USB-C is especially handy because it can be powered by the same connection that carries the video signal. See the portable monitors article for more on that category.

• Consoles and TVs: use HDMI
• PC gaming at high refresh rates: use DisplayPort
• Laptops and portables: use USB-C
• Office work: any modern port, USB-C preferred for convenience

How ports affect HDR and advanced color

The port you use can affect whether HDR works correctly on your monitor. HDMI 2.2 supports Dynamic HDR and SBTM, and it can carry HDR10 metadata. DisplayPort also supports HDR. When you connect an HDR-capable display to a Windows PC, the system will detect it if both the driver and the display support HDR10. The DirectX Advanced Color stack in Windows can output HDR and wide color gamut signals at high bit depths over HDMI or DisplayPort.

Some HDR monitors limit peak brightness in Dolby Vision mode. If you prefer a non-certified HDR10 mode that may have higher brightness, you can disable Dolby Vision mode in Windows display settings. This option is only available on Dolby Vision certified monitors, so check your monitor's specifications.

For HDR gaming, check whether the monitor supports DisplayHDR. The DisplayHDR standard from VESA sets minimum luminance levels, black levels, color gamut coverage, and bit depth requirements. For example, DisplayHDR 1000 requires a minimum of 1000 cd/m2 peak luminance and a 10-bit video signal, while DisplayHDR True Black 400 has stricter black level requirements for OLED and other emissive displays. The port must carry that HDR signal without bandwidth limitations, so use a cable that supports the full bandwidth of your monitor's port. See the HDR10 article for more on HDR formats.

Future-proofing your port selection

Technology standards move quickly. HDMI 2.2 is the latest version, but older HDMI 2.1 monitors still support 4K120 with VRR. DisplayPort and USB-C are also evolving: USB4 supports up to 80Gbps over certified cables, which is enough for multiple 4K displays or a single 8K display. The next version of DisplayPort is expected to support even higher bandwidth, but for most buyers today, any of these ports will handle a 4K monitor at 120Hz.

One practical tip: choose a monitor that has at least one of each port type if your budget allows. That gives you flexibility to change devices later. If you are a gamer, prioritize DisplayPort for your PC and HDMI for your console. If you are a laptop user, USB-C is your best bet for video, data, and power in one connection.

Before you buy, check the monitor's spec sheet for the exact versions of each port. A monitor may have a USB-C port that only supports USB 2.0 data speed while still carrying video, which is fine for display but slow for transferring files. For charging a laptop, look for USB Power Delivery support and the wattage rating.

What to pick for your use

Questions

Can I use HDMI for 144Hz gaming?

Yes, if both the monitor and the graphics card support HDMI 2.2 or at least HDMI 2.1. HDMI 2.2 supports up to 4K240 and 8K60 with full chroma, so 144Hz at 1440p or 4K is well within its capability. Check the monitor specs for the refresh rate supported over HDMI, because some older HDMI 2.0 ports cap at 60Hz at 4K. See the 144Hz monitors guide for examples.

Is DisplayPort better than HDMI for a monitor?

For a desktop PC, DisplayPort is often the better choice because it supports adaptive sync technologies like G-SYNC and has enough bandwidth for high refresh rates at high resolutions. For a console or TV, HDMI is the standard. Both are excellent, so choose based on your source device. Learn more in the DisplayPort article.

Can a USB-C port charge my laptop and show video?

Yes, if the monitor supports USB Power Delivery. USB PD Revision 3.1 allows up to 240W over a full featured USB-C cable. A monitor with a USB-C input and USB PD can power and charge a laptop while carrying a video signal, which is why USB-C is so popular for laptop setups. See the USB-C monitors article for details.

What is the difference between G-SYNC and G-SYNC Compatible?

G-SYNC uses a dedicated NVIDIA processor in the monitor, as described on the NVIDIA product page, and delivers the full VRR range with variable overdrive. G-SYNC Compatible monitors do not have that processor but are validated by NVIDIA to provide a good basic VRR experience over DisplayPort or HDMI. Check the G-SYNC article for more.

Does HDMI 2.2 require a special cable?

Yes, to reach the full 96Gbps bandwidth of HDMI 2.2, you need an Ultra96 certified cable. The older Ultra High Speed HDMI cable supports up to 48Gbps and works with HDMI 2.1 configurations. A certified cable ensures reliable performance at high resolutions and refresh rates. For more on HDMI cables, see the HDMI versions article.

Which port is best for HDR on a PC?

Both HDMI 2.2 and DisplayPort can carry HDR10 signals. Windows can detect an HDR10-capable display over either port and enable HDR automatically. Check that your monitor is certified for HDR, for example through the VESA DisplayHDR program, to get a consistent HDR experience. Read more in the HDR monitors guide.