The battle for the best gaming cable has never been more intense. With next-gen consoles and high-end graphics cards pushing 4K at 120Hz, gamers need a cable that can handle massive bandwidth without lag or signal loss. Two standards dominate the conversation: DisplayPort 1.4 and HDMI 2.1. Both promise stunning visuals and smooth gameplay, but they have distinct strengths and limitations.

In this guide, we break down the technical differences, real-world performance, and compatibility factors to help you choose the right cable for your gaming setup. Whether you're building a PC or plugging into a PlayStation 5 or Xbox Series X, understanding DisplayPort 1.4 vs. HDMI 2.1 is essential for getting the most out of your 4K 120Hz monitor.

What Is DisplayPort 1.4?

DisplayPort 1.4 is a high-bandwidth interface developed by VESA, designed primarily for PC monitors. It supports up to 32.4 Gbps of total bandwidth, which is enough for 4K at 120Hz with 8-bit color depth or 4K at 60Hz with 10-bit HDR. It also supports Display Stream Compression (DSC), which allows for higher resolutions and refresh rates without visual artifacts.

For competitive gamers, DisplayPort 1.4 is a favorite because it natively supports high refresh rates at 1440p and 4K. Many gaming monitors with 144Hz or 240Hz panels use DisplayPort as their primary input. Additionally, DisplayPort 1.4 supports daisy-chaining multiple monitors, a feature that productivity-focused gamers appreciate.

  • Bandwidth: 32.4 Gbps (effective after overhead)
  • Max resolution: 8K at 60Hz (with DSC), 4K at 120Hz (with DSC)
  • Best for: PC gaming, high refresh rate monitors, multi-monitor setups

What Is HDMI 2.1?

HDMI 2.1 is the latest iteration of the ubiquitous HDMI standard, offering a massive leap in bandwidth to 48 Gbps. This enables native 4K at 120Hz without compression, as well as 8K at 60Hz and even 10K at lower refresh rates. It also introduces Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), and Quick Frame Transport (QFT), which are critical for console gamers.

HDMI 2.1 is the standard for next-gen consoles like the PlayStation 5 and Xbox Series X. If you own one of these consoles and a compatible TV or monitor, HDMI 2.1 is essential to unlock full 4K 120Hz gaming. The cable also supports eARC for high-quality audio passthrough, making it a versatile choice for home theater setups.

  • Bandwidth: 48 Gbps
  • Max resolution: 10K at 120Hz (with DSC), 8K at 60Hz native
  • Best for: Console gaming, home theater, VRR and ALLM support

DisplayPort 1.4 vs. HDMI 2.1: Key Differences at a Glance

To help you decide quickly, here is a side-by-side comparison of the two standards across the most important gaming metrics. Keep in mind that actual performance depends on your monitor, GPU, and cable quality.

  • Bandwidth: DP 1.4 = 32.4 Gbps, HDMI 2.1 = 48 Gbps
  • 4K 120Hz support: DP 1.4 requires DSC; HDMI 2.1 supports natively
  • VRR support: Both support VRR, but HDMI 2.1 includes it as standard
  • Audio: HDMI 2.1 supports eARC for lossless audio; DP 1.4 relies on separate audio channels
  • Cable length: DP 1.4 cables can run longer without signal loss; HDMI 2.1 cables are more sensitive to length

Which Cable Should You Choose for Your Gaming Setup?

If you are a PC gamer with a high-end graphics card and a monitor that supports DisplayPort, stick with DisplayPort 1.4. It handles high refresh rates at 1440p and 4K with ease, and many competitive gamers prefer its lower latency. For console gamers, HDMI 2.1 is non-negotiable if you want 4K at 120Hz on a PS5 or Xbox Series X.

That said, some modern monitors include both ports, giving you flexibility. If you plan to use your monitor for both PC and console gaming, look for a model with HDMI 2.1 and DisplayPort 1.4. And remember: cable quality matters. A certified cable ensures you get the full bandwidth without interference.

  • PC gaming: DisplayPort 1.4 is often the better choice for high refresh rates
  • Console gaming: HDMI 2.1 is required for 4K 120Hz on PS5/Xbox Series X
  • Hybrid setups: Choose a monitor with both ports for maximum compatibility

Why Cable Quality Matters for 4K 120Hz

Even the best standard is useless with a poor-quality cable. For DisplayPort 1.4, look for VESA-certified cables that guarantee 32.4 Gbps bandwidth. For HDMI 2.1, certified Ultra High Speed HDMI cables are a must—they are tested for 48 Gbps and support all features like VRR and eARC.

A subpar cable can cause flickering, black screens, or dropped frames, especially at longer lengths. Stick to reputable brands and avoid bargain-bin options. Investing in a quality cable now saves you headaches later.

  • Always buy certified cables (VESA for DP, Ultra High Speed for HDMI)
  • Keep cable runs under 10 feet for HDMI 2.1 to avoid signal degradation
  • Check your monitor and GPU specs to ensure full feature support

Future-Proofing: What Comes After DisplayPort 1.4 and HDMI 2.1?

Both standards are being superseded. DisplayPort 2.0 offers up to 80 Gbps, enabling 4K at 240Hz or 8K at 60Hz without compression. HDMI 2.1 is already seeing updates like HDMI 2.1a, which adds Source-Based Tone Mapping (SBTM) for better HDR. However, for most gamers in 2025, DisplayPort 1.4 and HDMI 2.1 are more than enough.

If you are building a new PC or buying a monitor, consider whether it supports the next generation. But don't let future standards delay your upgrade—current cables deliver excellent performance for 4K 120Hz gaming.

  • DisplayPort 2.0: 80 Gbps, supports 4K 240Hz native
  • HDMI 2.1a: Adds SBTM for improved HDR
  • Current cables are sufficient for most gamers through 2026

Whether you choose DisplayPort 1.4 or HDMI 2.1, the right cable unlocks the full potential of your gaming hardware. For console players, HDMI 2.1 is essential, while PC gamers will appreciate the high refresh rate support of DisplayPort 1.4. No matter your setup, pairing your cable with quality accessories like the Call of Duty: Modern Warfare II can elevate your entire gaming experience. Explore our collection to find the perfect match for your rig.