HDMI Version Guide: 1.4 vs 2.0 vs 2.1
HDMI versions differ by maximum bandwidth, which determines supported resolutions and refresh rates. HDMI 1.4 (10.2 Gbps) handles up to 4K@30Hz. HDMI 2.0 (18 Gbps) supports 4K@60Hz and HDR. HDMI 2.1 (48 Gbps) adds 4K@120Hz, 8K, VRR, ALLM, and eARC. Using the wrong cable version can limit resolution, refresh rate, or prevent the connection entirely.
Gaming: Do You Need HDMI 2.1?
PlayStation 5 and Xbox Series X both support 4K@120fps via HDMI 2.1. If you want to use this capability, both the TV and the cable must be HDMI 2.1. At 1080p or 1440p with 60–120Hz, HDMI 2.0 is sufficient. Budget TVs often still use HDMI 2.0 ports, so check your TV's specs before buying a premium cable.
Choosing the Right Cable
Look for HDMI Forum certified cables: Standard (for 1080p), High Speed (for 4K@30Hz), Premium High Speed (for 4K@60Hz, HDR), and Ultra High Speed (for 4K@120Hz, 8K, HDMI 2.1). The certification is printed on the cable packaging. Uncertified cables labeled "HDMI 2.1" may not meet spec and can cause signal issues at high resolutions.
HDMI vs DisplayPort for PC Gaming
DisplayPort 1.4 (32.4 Gbps) and 2.1 (80 Gbps) generally outperform HDMI for PC gaming monitors, especially at high refresh rates. DisplayPort supports multi-monitor daisy-chaining and full G-Sync compatibility. HDMI is the universal standard for TVs, AV receivers, and game consoles.
Frequently Asked Questions
Passive HDMI cables work reliably up to about 15 ft (5m). Beyond that, signal quality can degrade. Use active HDMI cables (with signal repeaters) for runs up to 50 ft, or fiber-optic HDMI cables for longer runs.
Possibly. If you're using HDMI 1.4 and your TV requires 2.0 for 4K@60Hz, swap the cable. Also check your source device's video output settings and the TV's input label (look for HDMI 2.0/2.1 labeled ports).