DVI cables cannot transmit sound. The DVI standard was designed exclusively for video, so audio requires either a separate cable or a DVI-to-HDMI adapter with a compatible graphics card.
- You use a DVI-to-HDMI adapter and your GPU supports HDMI audio passthrough
- You run a separate analog audio cable alongside your DVI cable
- You use a standard DVI cable alone — no audio is in the DVI spec
- Your graphics card does not support HDMI audio via the DVI output
Why DVI Has No Audio
DVI (Digital Visual Interface) was developed by the Digital Display Working Group purely to carry digital video. Its signaling technology — TMDS (Transition Minimized Differential Signaling) — is optimized for video data only. There are no audio pins or audio channels in any DVI connector, regardless of variant.
DVI comes in three types: DVI-I, DVI-D, and DVI-A. None of them carry sound. This is the main practical difference between DVI and HDMI, which combines audio and video in a single cable from the ground up.
The One Exception: DVI-to-HDMI Adapter
Most modern graphics cards support HDMI audio passthrough through their DVI output. If yours does, a DVI-to-HDMI adapter cable can carry both video and audio to an HDMI-equipped monitor or TV — using just one cable.
This works because the adapter remaps the DVI signal to HDMI format, and the GPU sends the audio data alongside the video signal. Check your graphics card’s specs or driver settings to confirm HDMI audio over DVI is supported before buying an adapter.
| Setup | Works? | Need | Note |
|---|---|---|---|
| DVI cable only | No | Separate audio cable | No audio in DVI spec |
| DVI-to-HDMI adapter | Yes | GPU with HDMI audio support | Most modern GPUs support this |
| DVI + analog audio cable | Yes | Two cables | Works with any DVI setup |
What To Do If Your GPU Doesn’t Support Audio Over DVI
If your graphics card is older and lacks HDMI audio passthrough, the simplest fix is to run two cables: a DVI cable for video and a 3.5mm or RCA audio cable from your PC’s audio output to your speakers or monitor. This approach works with any hardware and costs very little.
If you’re already considering a cable upgrade, it’s worth looking at whether your devices support more modern connections. See our guide on whether USB-C can connect to HDMI for a comparison with newer single-cable solutions that handle both audio and video natively. You can also check whether USB-C supports video if your device has a USB-C port as an alternative output.
Quick Checklist Before You Buy
- Check your GPU specs for “HDMI audio over DVI” or “audio passthrough via DVI”
- Confirm your display has an HDMI input if you plan to use an adapter
- If unsure, budget for a separate audio cable as a fallback
For full technical details on DVI pin assignments and signal specifications, the Digital Display Working Group publishes the official DVI specification.
Bottom line: A standard DVI cable will never carry sound on its own. Your best single-cable option is a DVI-to-HDMI adapter with a GPU that supports HDMI audio passthrough. If that’s not available, simply add a separate audio cable — it’s the most reliable workaround for any DVI setup.