DisplayPort 1.4 vs 2.1: Which Do You Need

What DisplayPort 1.4 supports for gaming

DisplayPort 1.4 has been the standard connection on many gaming monitors and graphics cards for years. It supports high resolutions and refresh rates that cover most current gaming setups, especially for competitive and high refresh rate play.

With DisplayPort 1.4, a gaming monitor can run at 4K resolution with a high refresh rate when using Display Stream Compression (DSC). This is why you will often see 4K monitors with 144Hz or 240Hz panels use DisplayPort 1.4 as their primary input. For 1440p gaming, DisplayPort 1.4 easily handles refresh rates up to 240Hz and beyond, which is a common target for esports-focused gamers.

The practical takeaway is that if your gaming monitor is 1440p or 4K with a refresh rate up to 240Hz, DisplayPort 1.4 is likely enough. It is the connection you will find on most mid-range and high-end gaming desktops and monitors today.

• Supports 4K at high refresh rates with DSC
• Handles 1440p at 240Hz and above
• Widely available on current monitors and graphics cards

What DisplayPort 2.1 adds

DisplayPort 2.1 increases the bandwidth available for connecting a gaming monitor. This matters if you want to run an ultra-high resolution panel or a very high refresh rate without relying on compression as heavily.

On the latest graphics cards, DisplayPort 2.1 enables output like 4K at 480Hz or 8K at 165Hz with DSC, according to the specifications of the GeForce RTX 50 Series. For a gamer, this means if you have a monitor that runs at a very high refresh rate, like 360Hz or 480Hz, DisplayPort 2.1 gives you the headroom to use it at full resolution.

DisplayPort 2.1 is backward compatible with DisplayPort 1.4, so a cable and monitor that support 2.1 will still work with an older graphics card that only has 1.4 outputs. However, to get the new higher refresh rate support, both the graphics card and the monitor must be built for DisplayPort 2.1.

• Higher bandwidth for very high refresh rates
• Supports 4K at 480Hz or 8K at 165Hz with DSC on RTX 50 Series
• Backward compatible with DisplayPort 1.4

Cable length and signal quality

Cable length is a practical concern when you set up a gaming desktop, especially if your tower sits far from your monitor. DisplayPort 1.4 and 2.1 cables are rated for similar lengths in typical use, but signal quality depends on the cable construction and the resolution you are running.

For most gaming setups with a monitor on a desk and a PC tower nearby, a standard length DisplayPort cable works without issue. If you need a longer cable to route behind a desk or across a room, you should choose one that is certified for the DisplayPort version you are using. A cable rated for a higher version is less likely to cause flickering or signal drop at high resolutions.

There is no single length that works for every setup, so the advice is to measure the distance and buy a cable a bit longer than needed, without going to extreme lengths unless the cable is built for that purpose.

Read more about monitor connections in our guide to what monitor connectivity ports do you need or check the best 4K gaming monitors.

Resolution and refresh rate at a glance

When you compare DisplayPort 1.4 and 2.1 for gaming, the difference comes down to the top end of what your monitor can do. Both versions can drive a 1440p 240Hz monitor, but if you move to a 4K 480Hz panel, DisplayPort 1.4 may not have enough bandwidth, while DisplayPort 2.1 is built for it.

For competitive play at 1440p, the jump from 144Hz to 240Hz is already well supported by DisplayPort 1.4. For ultra-competitive players moving to 360Hz or higher refresh rates, DisplayPort 2.1 becomes the connection that makes the most sense.

The choice is not about which is objectively better, but about what your monitor asks for. If you pair a DisplayPort 2.1 monitor with a graphics card that has DisplayPort 2.1 outputs, you get the full capability. If not, the monitor will fall back to the supported bandwidth.

Matching your graphics card and monitor

A DisplayPort version only matters if both ends of the cable support it. Your graphics card outputs through DisplayPort, and your monitor receives through DisplayPort. Check the specifications of both before you choose a cable.

Any current gaming graphics card from a major vendor, such as the GeForce RTX 50 Series, includes DisplayPort outputs. Some of the newest cards come with DisplayPort 2.1, while older ones are limited to 1.4. On the monitor side, high refresh rate 4K panels and 360Hz 1440p panels are more likely to include DisplayPort 2.1 inputs.

If you are building or buying a prebuilt gaming PC, look at the output ports listed on the graphics card. The best prebuilt gaming PC guide can help you check the specs. For the monitor, the best 240Hz gaming monitors and best 4K gaming monitors pages list the connection types to expect.

Which DisplayPort version do you need for your play

For the majority of PC gamers, DisplayPort 1.4 is enough. If you play at 1080p or 1440p and your refresh rate is 144Hz to 240Hz, a DisplayPort 1.4 connection will run your monitor at its full refresh rate.

If you want a 4K monitor with a refresh rate above 144Hz, or you plan to move to a 360Hz or 480Hz panel, DisplayPort 2.1 is the version to look for. It is also the way to prepare for future monitor upgrades, since it gives you more bandwidth headroom.

For everyone else, the decision is simple: match the version on your graphics card to the version on your monitor, and use a cable that is rated for that version. There is no benefit to buying a DisplayPort 2.1 cable if your monitor or graphics card only supports 1.4, but it will not hurt to have one that is certified for a higher version.

• 1440p at 144Hz to 240Hz: DisplayPort 1.4 is enough
• 4K at 144Hz or higher: DisplayPort 2.1 for full refresh rate
• Ultra-high refresh rate monitors: DisplayPort 2.1 is the choice

What to pick for your play

Questions

Is DisplayPort 2.1 backward compatible with DisplayPort 1.4?

Yes, DisplayPort 2.1 is backward compatible with DisplayPort 1.4. If you use a DisplayPort 2.1 cable with a monitor that only supports 1.4, it will still work, but it will be limited to the 1.4 bandwidth.

Do I need a DisplayPort 2.1 cable for a 1440p 240Hz monitor?

No, a DisplayPort 1.4 cable is enough for a 1440p 240Hz monitor. The bandwidth of 1.4 handles this resolution and refresh rate without issue.

Can DisplayPort 1.4 run a 4K monitor at 144Hz?

Yes, DisplayPort 1.4 can run a 4K monitor at 144Hz using Display Stream Compression (DSC). Many 4K 144Hz monitors use this connection as their primary input.

What is the maximum refresh rate on DisplayPort 2.1?

On the latest graphics cards, DisplayPort 2.1 supports up to 4K at 480Hz or 8K at 165Hz with DSC, as listed in the specifications for the GeForce RTX 50 Series.

Does cable length matter for DisplayPort 2.1?

Cable length matters for signal quality at high resolutions. Use a certified cable rated for the version you are using, and avoid extreme lengths unless the cable is built for that purpose.