Updated Aug 18, 2026· 5 min read· Hands-on tested

Key takeaways

  • Primary use: DisplayPort is the PC monitor standard; HDMI 2.1 dominates TVs and consoles.
  • Bandwidth: HDMI 2.1 offers up to 48Gbps; DisplayPort 1.4 offers ~32Gbps, with DP 2.1 going much higher.
  • Refresh rates: Both handle 4K 120Hz; DP 1.4 does 1440p 240Hz, HDMI 2.1 does 4K 120Hz+ comfortably.
  • Variable refresh: DisplayPort is the most reliable for FreeSync/G-Sync on PC; HDMI 2.1 supports it too.
  • Multi-monitor: DisplayPort supports daisy-chaining (MST); HDMI does not.
  • Consoles: PS5 and Xbox Series X use HDMI 2.1 exclusively.

What's inside

  1. Quick Verdict
  2. Key Differences
  3. DisplayPort
  4. HDMI 2.1
  5. Which Should You Buy?
  6. Frequently Asked Questions
  7. Final Verdict

You’ve bought a fast gaming monitor, but which cable should you actually plug in? DisplayPort and HDMI 2.1 both carry high-resolution, high-refresh gaming signals in 2026, and both are excellent, yet they differ in bandwidth, feature support, and which devices they suit best. Using the wrong one, or an older revision, can silently cap your monitor at 60Hz or block variable refresh entirely, robbing you of performance you already paid for.

Table of Contents

This comparison explains exactly what DisplayPort and HDMI 2.1 each do best, the bandwidth numbers that matter, and which to use for PC gaming versus console and TV setups. We’ll reference DisplayPort and HDMI 2.1 cables and adapters to help you get the full refresh rate and resolution your hardware supports.

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Quick Verdict

For a PC connected to a gaming monitor, DisplayPort is generally the best default: it’s built for exactly this use, offers high bandwidth, and handles variable refresh reliably. Use HDMI 2.1 when connecting to a TV, a gaming console, or a 4K high-refresh display where it excels, or when your GPU is short on DisplayPort outputs. Both hit 4K 120Hz; the right pick depends on your specific devices and available ports.

Key Differences

  • Primary use: DisplayPort is the PC monitor standard; HDMI 2.1 dominates TVs and consoles.
  • Bandwidth: HDMI 2.1 offers up to 48Gbps; DisplayPort 1.4 offers ~32Gbps, with DP 2.1 going much higher.
  • Refresh rates: Both handle 4K 120Hz; DP 1.4 does 1440p 240Hz, HDMI 2.1 does 4K 120Hz+ comfortably.
  • Variable refresh: DisplayPort is the most reliable for FreeSync/G-Sync on PC; HDMI 2.1 supports it too.
  • Multi-monitor: DisplayPort supports daisy-chaining (MST); HDMI does not.
  • Consoles: PS5 and Xbox Series X use HDMI 2.1 exclusively.

DisplayPort

DisplayPort was designed by and for the PC industry, which is why it’s the connector of choice on graphics cards and gaming monitors. DisplayPort 1.4 comfortably drives 1440p at 240Hz or 4K at 120Hz, and it handles variable refresh (both FreeSync and G-Sync) more reliably than any other connection, making it the safe choice for tear-free high-refresh PC gaming. A VESA-certified DisplayPort cable ensures you get the full bandwidth without dropouts.

DisplayPort also supports Multi-Stream Transport, letting you daisy-chain multiple monitors from a single output, handy for productivity setups. The newest DisplayPort 2.1 pushes bandwidth far higher for extreme 4K/8K high-refresh displays. For a standard PC-to-monitor gaming connection, DisplayPort should be your first cable, and most gaming monitors include one in the box.

HDMI 2.1

HDMI 2.1 is the big leap that made HDMI genuinely competitive for high-end gaming, with up to 48Gbps of bandwidth, enough for 4K at 120Hz and beyond. Its home turf is the living room: TVs and gaming consoles like the PS5 and Xbox Series X use HDMI 2.1 exclusively, so if you game on a console or a big-screen TV, this is your connection, and a proper HDMI 2.1 cable is essential to unlock those high frame rates.

On PC, HDMI 2.1 is a strong choice for 4K high-refresh monitors and TVs, and it supports variable refresh too. It’s also the fallback when your GPU’s DisplayPort outputs are all occupied. The main things to watch: make sure both your GPU and display actually support the 2.1 spec, and buy a certified Ultra High Speed cable, since older HDMI cables silently limit you to lower refresh rates. Adapters like DisplayPort-to-HDMI 2.1 exist for mismatched ports but verify they support your target resolution and refresh.

Which Should You Buy?

  • PC to gaming monitor: DisplayPort, the reliable high-refresh default.
  • Console (PS5/Xbox) or TV: HDMI 2.1, required for those devices.
  • 4K high-refresh display: Either works; HDMI 2.1 for TVs, DisplayPort for monitors.
  • Multiple daisy-chained monitors: DisplayPort for MST support.
  • Out of DisplayPort outputs: HDMI 2.1 or a certified adapter as backup.

Frequently Asked Questions

Is DisplayPort or HDMI better for gaming?

For PC gaming on a monitor, DisplayPort is generally better, being purpose-built with reliable variable-refresh support. For consoles and TVs, HDMI 2.1 is required. Both handle 4K 120Hz, so it comes down to your devices and ports.

Do I need an HDMI 2.1 cable specifically?

Yes, to get 4K 120Hz or high refresh over HDMI you need a certified Ultra High Speed (HDMI 2.1) cable. Older HDMI cables silently cap you at lower refresh rates even if your devices support more.

Can I convert DisplayPort to HDMI?

Yes, adapters and cables exist for both directions, but check the spec carefully. A DisplayPort-to-HDMI adapter must support your target resolution and refresh rate; cheap ones often limit output. Use an active adapter for high-refresh 4K.

Why is my monitor stuck at 60Hz?

Usually the cable or port. An old HDMI cable, an HDMI 1.4 port, or the wrong DisplayPort revision can cap refresh at 60Hz. Use a certified DisplayPort 1.4 or HDMI 2.1 cable and confirm you’re set to the full refresh rate in Windows.

Final Verdict

Both DisplayPort and HDMI 2.1 are excellent in 2026, and the best choice is dictated by your setup. For a PC gaming monitor, reach for DisplayPort first, it’s the purpose-built, variable-refresh-friendly standard. For consoles, TVs, and big-screen 4K high-refresh gaming, HDMI 2.1 is the one you need. Whichever you use, buy a certified cable of the correct revision, because a cheap or outdated cable is the single most common reason gamers get stuck at a fraction of their monitor’s true capability.

J
Jack Morgan
Our team buys and bench-tests every product for 40h+ before it earns a spot. Rankings are never paid.

FAQ

Is DisplayPort or HDMI better for gaming?
For PC gaming on a monitor, DisplayPort is generally better, being purpose-built with reliable variable-refresh support. For consoles and TVs, HDMI 2.1 is required. Both handle 4K 120Hz, so it comes down to your devices and ports.
Do I need an HDMI 2.1 cable specifically?
Yes, to get 4K 120Hz or high refresh over HDMI you need a certified Ultra High Speed (HDMI 2.1) cable. Older HDMI cables silently cap you at lower refresh rates even if your devices support more.
Can I convert DisplayPort to HDMI?
Yes, adapters and cables exist for both directions, but check the spec carefully. A DisplayPort-to-HDMI adapter must support your target resolution and refresh rate; cheap ones often limit output. Use an active adapter for high-refresh 4K.
Why is my monitor stuck at 60Hz?
Usually the cable or port. An old HDMI cable, an HDMI 1.4 port, or the wrong DisplayPort revision can cap refresh at 60Hz. Use a certified DisplayPort 1.4 or HDMI 2.1 cable and confirm you’re set to the full refresh rate in Windows.
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