Your monitor and graphics card both offer HDMI and DisplayPort, and either cable seems like it should work. For most modern displays that is true, but the better choice depends on resolution, refresh rate, VRR, laptops, TVs, and multi-monitor plans.
Does This Affect You?
HDMI and DisplayPort can both deliver sharp digital video and audio. The important differences are not the connector names alone, but the versions supported by the source device, the display, and the cable. The slowest part of that chain sets the limit.
The Actual Differences
Bandwidth determines how much resolution and refresh rate the connection can carry. Features around that bandwidth are what separate the standards in practice.
- Version matters. HDMI 2.0 is commonly enough for 4K at 60Hz, HDMI 2.1 can handle 4K at 120Hz and other high-bandwidth modes, DisplayPort 1.4 supports high-refresh 1440p and many 4K 120Hz setups, and DisplayPort 2.1 goes higher. The connector shape alone does not guarantee those speeds.
- DisplayPort can daisy-chain monitors. With DisplayPort 1.2 or newer and monitors that support MST, one GPU output can feed a second monitor downstream. HDMI does not provide the same built-in independent display chain.
- Variable refresh rate can work on both. FreeSync and G-Sync are common over DisplayPort, and newer HDMI 2.1 equipment also supports VRR well. Older monitors may only enable VRR on one input, so check the manual.
- HDMI is better for TVs and soundbars. ARC and eARC are HDMI features that send audio back from a TV to a receiver or soundbar. DisplayPort is mainly a PC-monitor connection and does not replace HDMI in a home-theater chain.
- Availability differs by device. DisplayPort is common on PC graphics cards and monitors, while HDMI is nearly universal on TVs, consoles, streaming boxes, receivers, and projectors.
Which One to Pick for Your Setup
Use the port that best matches the device and the feature you need.
- PC monitor gaming or high refresh: choose DisplayPort when both the monitor and graphics card have it. It has historically been the most reliable choice for high refresh and VRR on PC monitors, though HDMI 2.1 can be just as capable when both ends support it.
- TV, console, receiver, or soundbar: choose HDMI. It is the standard on consumer AV gear and is required for ARC/eARC audio features.
- Multiple monitors from one output: use DisplayPort MST with compatible monitors or a real MST hub. A basic HDMI splitter usually mirrors the same image instead of extending the desktop.
- USB-C laptop connection: check whether the USB-C port supports DisplayPort Alt Mode or HDMI Alt Mode. The USB-C shape does not automatically mean video output is available.
- No visible difference: if your current resolution, refresh rate, and VRR options are all available, either cable is fine. A limitation normally appears as a missing refresh-rate option, no VRR, or no daisy-chain support, not as a mysterious hidden quality loss.
Always match the cable to the port version. A monitor and graphics card with HDMI 2.1 can still be limited by an older HDMI cable. The same idea applies to DisplayPort cables, docks, adapters, and KVM switches.
Passive DisplayPort-to-HDMI adapters can work because some DisplayPort outputs support DP++, which sends an HDMI-compatible signal. The reverse direction, HDMI to DisplayPort, usually needs an active powered adapter because HDMI does not provide the same fallback signal.
USB-C is especially easy to misread. A laptop or monitor USB-C port may carry DisplayPort video, HDMI video, Thunderbolt video, charging only, or data only. Look for the exact phrase “DisplayPort Alt Mode,” “Thunderbolt,” or video-out support before buying a cable or dock.
Sources
- VESA – DisplayPort Standard Overview (2025)
- HDMI Licensing Administrator – HDMI Specification Versions (2025)
- NVIDIA – HDMI vs. DisplayPort for Gaming Monitors (2024)