The common standards for connecting a digital video source to a display — monitor, TV, or projector — are HDMI, DVI, and DisplayPort. Each standard has different bandwidth capabilities, audio support, and resolution limits. This article compares all three and lists the pros and cons of each to help you choose the right connection for your setup.
Table of Contents
5 sections — jump to any topic1. HDMI
HDMI — High-Definition Media Interface — is the standard connection for HDTVs and is available on most consumer monitors and graphics cards. It carries both audio and video over a single cable, which makes it the preferred choice for connecting to TVs and home theater setups.
HDMI versions differ significantly in bandwidth and resolution support. HDMI 1.4 supports up to 3,840×2160 (4K) at 30Hz. HDMI 2.0 raises this to 4K at 60Hz and is the most common version found on current monitors and graphics cards. HDMI 2.1 supports up to 48 Gb/s — compared to 18 Gb/s for HDMI 2.0 and 10.2 Gb/s for HDMI 1.4 — enabling 4K at 120Hz, 8K at 60Hz, and Variable Refresh Rate (VRR). HDMI 2.1 requires compatible cables to achieve its full bandwidth.
HDMI is designed to be backward-compatible with DVI — there is no loss of video quality when using an HDMI-to-DVI adapter or cable, though audio will not pass through DVI. High-speed HDMI cables are required for resolutions above 1080p. For most uses, cables rated for HDMI 1.4 also work with HDMI 2.0, but HDMI 2.1 requires its own rated cables for full 48 Gb/s throughput.
For runs beyond 8–10 meters, standard copper HDMI cables become unreliable. HDMI fiber extenders carry the full signal over optical fiber with zero degradation up to 100m+. See our fiber video cable guide for how active optical HDMI cables work inside.
HDMI — Key Specs
- HDMI 1.4: 4K (3,840×2160) at 30Hz, 10.2 Gb/s
- HDMI 2.0: 4K at 60Hz, 18 Gb/s
- HDMI 2.1: 4K at 120Hz, 8K at 60Hz, VRR, 48 Gb/s
- Carries audio and video over a single cable
- Backward-compatible with DVI (video only, no audio)
- Standard on TVs, monitors, consoles, and projectors
2. DisplayPort
DisplayPort is the preferred standard for connecting a computer to a monitor, particularly for gaming and professional use. It offers higher bandwidth than equivalent HDMI versions and includes features like Adaptive Sync (AMD FreeSync) natively.
DisplayPort 1.2 supports 4K at 60Hz or 1080p at 144Hz. DisplayPort 1.4 adds DSC (Display Stream Compression) and supports 4K at 120Hz or 8K at 60Hz. DisplayPort 2.0 — available on newer hardware — delivers up to 77.37 Gb/s, enabling 4K at 240Hz or 8K at 85Hz uncompressed.
With DisplayPort 1.3 or higher and MST (Multi-Stream Transport) support, it is possible to drive multiple displays from a single DisplayPort connection — for example, two 4K displays at 60Hz — provided the graphics card and monitors both support MST. Dual-mode DisplayPort (DisplayPort++) can also be adapted to DVI or HDMI with a passive adapter, though maximum resolution may be limited by the adapter.
DisplayPort can carry audio signal, but audio support over DisplayPort is optional — it is up to the manufacturer to implement it. Most modern monitors with built-in speakers support audio over DisplayPort, but always verify before relying on it.
For longer runs, DisplayPort fiber extenders support runs up to 300m with zero signal loss. See our DisplayPort basics guide for detailed version comparison and fiber DP options.
DisplayPort — Key Specs
- DP 1.2: 4K at 60Hz or 1080p at 144Hz
- DP 1.4: 4K at 120Hz or 8K at 60Hz (with DSC)
- DP 2.0: up to 4K at 240Hz or 8K at 85Hz uncompressed
- Multi-display via MST (requires hardware support on both ends)
- Audio support optional — verify per device
- Adaptable to HDMI and DVI via passive adapter (DisplayPort++)
- Native Adaptive Sync (AMD FreeSync)
3. DVI
DVI — Digital Visual Interface — is an older standard that is still found on many graphics cards and monitors, particularly in professional and legacy environments. The video signal is essentially the same as HDMI, but DVI does not carry audio. Some graphics cards may pass audio via DVI when connected with a DVI-to-HDMI cable or adapter, but this depends entirely on the GPU manufacturer.
DVI comes in two bandwidth configurations: single-link DVI supports up to 1,920×1,200 resolution, while dual-link DVI supports up to 2,560×1,600. DVI is capable of 144Hz refresh rates at 1080p, making it a viable option for high-refresh-rate gaming at that resolution. For 4K, however, DVI is not suitable — DisplayPort or HDMI is required.
DVI is largely being phased out of new hardware in favor of DisplayPort and HDMI, but it remains common in older monitors and workstations and is fully compatible with HDMI via passive adapters.
DVI — Key Specs
- Single-link: up to 1,920×1,200
- Dual-link: up to 2,560×1,600
- Supports 144Hz at 1080p
- No audio support (video only)
- Compatible with HDMI via passive adapter
- Not suitable for 4K — use DisplayPort or HDMI instead
4. Side-by-Side Comparison
← swipe to scroll →| Feature | HDMI 2.1 | DisplayPort 1.4 | DVI (Dual-Link) |
|---|---|---|---|
| Max bandwidth | 48 Gb/s | 32.4 Gb/s | ~9.9 Gb/s |
| Max 4K resolution | 4K at 120Hz | 4K at 120Hz (DSC) | Not supported |
| 8K support | 8K at 60Hz | 8K at 60Hz (DSC) | Not supported |
| Audio support | Yes — native | Optional (manufacturer) | No (video only) |
| Multi-display | No native MST | Yes via MST | No |
| 144Hz at 1080p | Yes (2.0+) | Yes (1.2+) | Yes |
| HDMI/DVI compatible | Yes (backward compat) | Yes via adapter (DP++) | Yes (HDMI adapter) |
| Best suited for | TVs, consoles, home theater | PC monitors, gaming, professional | Legacy monitors up to 1440p |
5. Which Standard Should You Choose?
The right choice depends on your display, source device, and use case. Use HDMI if you are connecting to a TV, console, or projector where audio over the cable is required and your device supports it. Use DisplayPort for PC-to-monitor connections, especially for high-refresh-rate gaming, multi-monitor setups, or professional displays that benefit from the higher bandwidth. Use DVI only if you are working with legacy hardware that lacks HDMI or DisplayPort outputs — for any new purchase, DVI should be avoided.
Choose HDMI when:
- Connecting to a TV, console, or projector
- Audio over cable is required
- Backward compatibility with DVI is needed
Choose DisplayPort when:
- Connecting a PC to a monitor
- High-refresh-rate gaming (144Hz+)
- Multi-monitor daisy-chaining via MST
Use DVI only when:
- Working with legacy hardware
- HDMI and DisplayPort are unavailable
- Resolution does not exceed 2,560×1,600
Vitex makes HDMI and DisplayPort fiber extenders and active optical cables for any run length — plug-and-play, zero compression, zero latency.
Contact Vitex — US-based support for display connectivity, video extension, and custom AV installations.
