If you’ve ever stood in the aisle of an electronics store, staring at wall shelves stacked with HDMI and DisplayPort cables, you know it’s easy to default to whatever’s cheaper or your old go-to—until something goes wrong. Maybe your 4K screen won’t hit 120Hz, or your gaming rig cuts out mid-boss fight, and suddenly you’re wondering why the cable you grabbed “should work” didn’t. As a signal cable supplier, I talk to this exact confusion every single week, so let’s break down the real differences without the tech jargon that makes your eyes glaze over. Signal Cable
First, let’s start with what both cables actually do, because they’re not built to fix different problems—they’re built for different devices and needs. Both carry video and audio data between your source (laptop, console, Blu-ray player) and your display (TV, monitor, projector). But the nitty-gritty of how they move that data, and the specs they prioritize, is where the split happens.
Let’s jump to the most obvious stuff first: versions. HDMI came first, launching back in 2002 as a replacement for older combo cables that carried analog video and separate audio, which were clunky and could produce fuzzy signals if you pinched the wrong cord. DisplayPort showed up in 2006, made by a group of tech companies that wanted a cable designed for the digital age, focused more on high-performance displays—like the gaming monitors people were starting to get for their PCs. Now, each has multiple versions, and that’s where most people get tripped up.
For HDMI, the versions you’ll run into are 1.4, 2.0, 2.1, and even the newer 2.1a. HDMI 1.4 maxes out at 4K at 30Hz, which is fine for basic TVs or old laptops, but if you want a 4K gaming monitor that runs at 60Hz, or a 4K TV that’ll do 120Hz for sports, you’ll need HDMI 2.0 or higher. HDMI 2.0 bumps that up to 4K at 60Hz, which is still solid for most people, but HDMI 2.1 is the game-changer here. It can do 8K at 60Hz, 4K at 120Hz, even 4K at 240Hz—perfect for PS5, Xbox Series X, or a high-end PC setup. It also added stuff like eARC (Enhanced Audio Return Channel), which lets you send lossless audio to a soundbar without an extra cable, and dynamic HDR, which adjusts the brightness of scenes frame by frame so dark parts stay dark and bright parts don’t blow out.
Now DisplayPort, its versions are 1.2, 1.4, 1.4a, and 2.0. DisplayPort 1.2 is still common on budget monitors: it does 4K at 60Hz, but wait—here’s a trick people miss. DisplayPort can chain cables. If you have two DisplayPort 1.2 cables, you can run a dual-screen setup off one port on your laptop, which is way easier than plugging two HDMI cords. DisplayPort 1.4 cranks that to 8K at 30Hz, or 4K at 120Hz, and it also has a feature called DSC (Display Stream Compression) that lets it squeeze more data through without losing quality—so you can even get 8K at 60Hz with a 1.4 cable, as long as both your source and display support DSC. The new DisplayPort 2.0 blows HDMI 2.1 out of the water for raw speed: it does 8K at 120Hz, 4K at 240Hz, and even 10K at 60Hz, which is overkill for most home setups but awesome for pro monitors or VR headsets.
Next up, something that matters a lot for anyone who’s moved their computer around or set up a TV in a new room: length. HDMI and DisplayPort have different limits for how far you can run the cable without signal loss. Let’s be real—neither is great for running a cable through walls for a 50-foot TV mount, but for typical home use, it’s a big difference. HDMI’s top limit for a passive cable (the kind you grab off a shelf without a fancy label) is about 15 feet for HDMI 2.1; go longer than that, and you’ll start getting blurry video or dropouts. DisplayPort passive cables? Max out at around 10 feet for newer versions, but here’s the flip: if you need a longer cable, DisplayPort lets you use an active cable (one with a chip in the end to boost the signal) that can go up to 100 feet, same as HDMI. Wait, but why does that matter? If you’re setting up a gaming rig in the corner of your room and running a cable to a monitor on the opposite wall, a DisplayPort active cable will be cheaper than an HDMI active cable for lengths over 15 feet, from what I’ve seen with orders.
Then there’s the whole “audio support” thing, which a lot of people assume only HDMI has—but that’s outdated. Early HDMI versions (like 1.4) did have way better audio support than DisplayPort back in the day, which is why it became the go-to for TVs: you could plug your cable box into the TV, and it would send Dolby Atmos or DTS audio to your soundbar, no extra cord. But DisplayPort caught up years ago. Now, both can carry lossless audio formats, including Dolby Atmos and DTS:X. The only leftover quirk here is eARC, which is HDMI-exclusive—so if you want to send high-res audio back to a soundbar or receiver from your TV, you’ll need an HDMI 2.1 cable for that, not DisplayPort. For direct connections between a PC monitor and a laptop, where you don’t need to bounce audio back, it’s a wash.
Port size and what devices they fit on. This is where most people have a “wait, that won’t plug in” moment. HDMI ports are standard on almost everything: TVs, monitors, laptops, gaming consoles, phones, Blu-ray players. You’ll struggle to find a device made in the last 10 years without an HDMI port. DisplayPort ports are way more common on PCs and gaming monitors, and way less common on TVs, consoles, phones. If you have an Xbox Series X or PS5, both have HDMI ports, no DisplayPort—so you can’t swap a DisplayPort cable for your console to TV, full stop. Laptops: budget and mid-range laptops usually have HDMI, high-end gaming laptops and workstations are more likely to have DisplayPort. Monitors: gaming monitors almost always have both HDMI and DisplayPort, so you can pick whatever fits your source. Also, there are mini versions—Mini HDMI, Mini DisplayPort, Micro HDMI for phones—but that’s just a size thing, the cable type itself still follows the same version rules.
Now, the stuff that actually affects your setup day-to-day, not just spec sheets. Let’s talk about gaming, since that’s a huge use case for both cables. For 1080p or 1440p gaming at high refresh rates, both work great. But if you’re running a 1440p monitor at 144Hz or 240Hz, DisplayPort will give you a smoother signal with less stutter, because its bandwidth is designed for that. I’ve had customers come to me saying their PS5 works fine on HDMI, but their PC gaming monitor needs a DisplayPort cable to get that extra smooth frame rate— that’s not a myth, that’s just the cable’s bandwidth working for what it’s made for. For console gaming, though, most people don’t need anything over HDMI 2.1 for 4K 120Hz, which is what the PS5 and Xbox Series X are designed for.
Then there’s color support. A lot of new monitors and TVs use 10-bit color (which means billions of colors, not the old 8-bit’s millions) and wide color gamut, like Rec. 2020, for vivid, lifelike images. Both HDMI and DisplayPort support these, but the way they handle it differs. HDMI uses something called HDCP (High-Bandwidth Digital Content Protection) for streaming content like Netflix or Blu-ray, and newer HDMI versions use HDCP 2.3, which is required for 4K streaming. DisplayPort also uses HDCP, but it’s a bit more flexible for non-streaming content, like if you’re connecting a PC to a monitor to edit photos—you might get better color accuracy with a DisplayPort cable there, because it’s not tied to the same copyright hoops as HDMI.
Wait, let’s clear up a common myth I hear all the time: “HDMI is better for audio, DisplayPort is only for video.” No, that’s old news. Back in 2010, DisplayPort didn’t support multichannel audio, but today, both carry audio. The only exception is if you’re using an older device—like a laptop from 2012 with DisplayPort 1.1—it can’t carry the same high-res audio as a modern HDMI cable. If your gear is within the last 5 years, that myth doesn’t apply.
Another thing: cable cost. For passive cables (no active signal boost), shorter lengths (under 10 feet) for the same version, DisplayPort is usually a tiny bit cheaper than HDMI, because HDMI has had more mainstream demand and higher licensing fees for the standard. But for longer active cables, like 25 feet or more, HDMI gets more expensive, so if you need a long run, DisplayPort active cables are a better value. That’s why a lot of setups that are run through walls, like home theater systems, use HDMI, but gaming rigs that are close to the monitor often use DisplayPort to save a few bucks.
Let’s wrap this up with what this actually means for your next purchase. If you’re connecting a console to a TV: go for an HDMI 2.1 cable, it’s the only one that’ll get you 4K 120Hz and eARC for sound. If you’re connecting a gaming PC to a gaming monitor that has both ports: use a DisplayPort cable, it’ll give you better performance for high refresh rates. If you’re setting up a home theater sound system: HDMI’s eARC is non-negotiable for sending high-res audio to your receiver. If you’re moving a laptop around and plugging into different monitors, a DisplayPort cable is handy because you can chain multiple monitors if you need to.
Now, as someone who’s worked in signal cables for years, I’ve seen customers waste money on cables they don’t need—buying a $50 HDMI 2.1 cable for a old 1080p monitor that only needs a $10 HDMI 1.4, or buying a DisplayPort cable for a PS5 when they already have a perfect HDMI cable. The key is matching the cable’s version and type to your device’s ports and your desired use.
If you’re not sure which cable you need, or you’re running into signal issues (blurry video, cutouts, not hitting the refresh rate you want), don’t hesitate to reach out. We’ve helped tons of people sort out their cable mix-ups, from first-time gamers building their first rig to home theater enthusiasts upgrading their setup. Whether you need a short passive cable for your desk or a long active cable for a wall-mounted TV, we’ve got options that fit every budget.
Street Light References:
HDMI Licensing, LLC. (2023). HDMI 2.1 Specification Overview.
Video Electronics Standards Association (VESA). (2022). DisplayPort 2.0 Standard Details.
Consumer Technology Association. (2024). Home Audio/Video Cable Performance Report.
Jiangsu Changcheng Cable Co., Ltd.
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