How to Choose the Right HDMI Cable

Difficulty
Beginner
Tested on
HDMI 2.1 Specification
You will need
Display hardware, source device, tape measure

Step by step

  1. 1 min

    Identify your resolution and refresh rate

    Determine the native resolution and maximum refresh rate of your source device and display. 4K at 60Hz requires different bandwidth than 4K at 120Hz or 8K content. Higher resolutions and frame rates demand higher data throughput.

    Note: Check your TV or monitor manual for the 'Supported Input Signals' section.
  2. 1 min

    Match the cable classification to the bandwidth

    Purchase 'Ultra High Speed' HDMI cables for 4K/120Hz or 8K support, as they handle 48Gbps. For 4K/60Hz, 'Premium High Speed' cables are sufficient at 18Gbps. Avoid legacy 'Standard' cables for modern displays.

    Note: Look for the holographic QR code on the packaging to verify certification.
  3. 30 sec

    Check for eARC support

    If you are connecting a soundbar or receiver, ensure your cable supports eARC (Enhanced Audio Return Channel). All 'Ultra High Speed' cables support eARC by default. This enables high-bitrate audio formats like Dolby Atmos and DTS:X.

  4. 30 sec

    Determine the required cable length

    Keep the cable length as short as possible to prevent signal degradation. For distances over 5 meters, use active optical HDMI cables to maintain signal stability. Avoid coiling excess cable tightly behind the display to prevent interference.

    Note: Passive copper cables lose effectiveness significantly beyond 5 meters.
  5. 1 min

    Verify physical build quality

    Select cables with robust connector housing and shielding. Ensure the connector fits snugly into the HDMI ports without excessive wiggle room. Avoid cables with overly rigid jackets if you need to route them through tight cable management channels.