What Monitor Connectivity Ports Do You Need?

Understanding monitor ports

Monitor connectivity ports are the physical inputs on a display that accept video signals from a graphics card. The most common types are HDMI, DisplayPort, and USB-C. Each has different capabilities in terms of resolution, refresh rate, and additional features like audio or data transfer.

The port you need depends on the resolution and refresh rate you want to run. Higher resolutions and refresh rates require more bandwidth, which newer port versions provide. For example, a 4K monitor at a high refresh rate needs a port that can carry that data, such as DisplayPort 1.4 or HDMI 2.1. See our best 4K gaming monitors for examples.

Your graphics card determines which ports are available. Most modern graphics cards, like the GeForce RTX 50 Series, include multiple DisplayPort and HDMI outputs. The exact ports and their versions are listed in the card's specifications. If you are comparing prebuilt systems, our best prebuilt gaming PC guide explains what to look for.

HDMI vs. DisplayPort for gaming

HDMI and DisplayPort are the two main video interfaces for gaming monitors. HDMI is common on TVs and many monitors, while DisplayPort is often preferred for PC gaming because it supports higher refresh rates at higher resolutions, especially with adaptive sync technologies.

DisplayPort versions matter. DisplayPort 1.4 supports up to 8K at 60Hz or 4K at 120Hz with compression. DisplayPort 2.1 offers even more bandwidth, enabling higher refresh rates at 4K and beyond. HDMI 2.1 also supports high bandwidth, making it suitable for 4K at 120Hz or higher.

When choosing a monitor, check which port versions it has and whether they match your graphics card's outputs. For example, if your GPU has DisplayPort 1.4 and your monitor has the same, you can run high refresh rates at 1440p or 4K, depending on the monitor's capabilities. Our best 1440p gaming monitors listing can help you compare options.

USB-C and other ports

USB-C is becoming more common on monitors, especially for laptops and some desktop setups. It can carry video, data, and power over a single cable, reducing clutter. However, not all USB-C ports support video; check for DisplayPort Alt Mode or Thunderbolt support.

Other ports like DVI and VGA are rarely found on modern gaming monitors. They do not support high resolutions or refresh rates well, so they are not recommended for gaming. If a monitor only has these ports, it is likely not designed for modern gaming.

For multi-monitor setups, the number of ports on your graphics card matters. Most GPUs support up to four displays, so you can connect multiple monitors using a mix of DisplayPort and HDMI. Ensure you have enough cables and ports to match your setup. For advice on multi-monitor configurations, see how to choose a gaming PC for multi-monitor setups.

Matching ports to your graphics card

To get the best performance, match the port version on your monitor to the port version on your graphics card. For example, if your GPU has DisplayPort 1.4 and your monitor has DisplayPort 1.2, the connection will run at the lower version's capabilities, limiting refresh rate or resolution.

Check the specifications of your graphics card to see which ports it has. The GeForce RTX 50 Series, for instance, includes three DisplayPort outputs and one HDMI output, supporting up to 4K at 480Hz or 8K at 165Hz with compression.

If you are using a prebuilt gaming PC, the ports on the back of the tower are the ones from your graphics card. Make sure your monitor's cable matches one of those ports. If you need a different cable, you can use an adapter, but it may limit performance. For a deep dive on graphics card specifications, see our best graphics cards for PC gaming guide.

Choosing the right cable

The cable you use must support the port version and bandwidth. For high refresh rates at 1440p or 4K, use a cable that is certified for the port version, such as a DisplayPort 1.4 or HDMI 2.1 cable. Lower-quality cables may not handle the bandwidth, causing flickering or no signal.

Cable length can also affect signal quality. Longer cables may need to be thicker or have better shielding. For most desktop setups, a cable of 1 to 2 meters is sufficient.

If you are using USB-C for video, ensure the cable supports DisplayPort Alt Mode. Not all USB-C cables do, so check the specifications before buying. For a summary of what refresh rate you should target, read what is a good refresh rate for gaming.

What to pick for your play

For most gaming setups, a monitor with DisplayPort 1.4 or HDMI 2.1 is ideal. If you play at 1080p with a high refresh rate, DisplayPort 1.2 or HDMI 2.0 is often enough. For 1440p at 144Hz or higher, DisplayPort 1.4 or HDMI 2.1 is recommended.

For 4K gaming at high refresh rates, DisplayPort 2.1 or HDMI 2.1 is necessary to get the full bandwidth. If you plan to use multiple monitors, ensure your graphics card has enough ports and that each monitor's input matches.

Consider your future upgrades. If you might get a higher-resolution monitor later, choose a monitor with newer port versions to avoid needing a new cable or adapter. Our best gaming monitors for PC guide can point you to models with the latest ports.

What to pick for your play

Questions

What is the difference between HDMI and DisplayPort?

HDMI is common on TVs and some monitors, while DisplayPort is often preferred for PC gaming because it supports higher refresh rates at higher resolutions and adaptive sync. Both have multiple versions that affect bandwidth. See our monitor refresh rate guide for more.

Can I use a USB-C port for video on a gaming monitor?

Yes, if the USB-C port supports DisplayPort Alt Mode or Thunderbolt. This allows the port to carry video signals, and it can also deliver power and data over the same cable.

Do I need a specific cable for high refresh rates?

Yes, the cable must support the bandwidth of the port version. For example, a DisplayPort 1.4 cable is needed for 1440p at 144Hz or 4K at 120Hz. Using a lower-rated cable may cause issues.

Can I use an adapter to connect different ports?

Yes, adapters exist, but they may limit performance. For example, a DisplayPort to HDMI adapter might not support the full bandwidth of the HDMI port. It is best to use matching ports when possible.

How many monitors can I connect to my graphics card?

Most modern graphics cards, like the GeForce RTX 50 Series, support up to four displays. The exact number depends on the card's outputs and the monitor's inputs. For multi-monitor setups, see our multi-monitor guide.