> HD vs 4K for streaming: resolutions, HDR, frame rates, codecs and broadband needs, when 4K is actually visible on your TV, and the truth about 8K. > Source: https://streampulsetv.co.uk/iptv-guide/hd-vs-4k/ [IPTV Guide](https://streampulsetv.co.uk/iptv-guide/) # HD vs 4K: picture quality explained for streaming Resolution is only part of what makes a picture look good. This guide compares HD and 4K honestly: what each needs, how much difference you will see at normal viewing distances, and why "4K" on a label does not always mean 4K on screen. - Updated 11 November 2026 - 3 min read Part of our [IPTV Guide](https://streampulsetv.co.uk/iptv-guide/) section. **On this page** 1. Resolutions at a glance 2. When 4K makes a visible difference 3. What you need for 4K streaming 4. Frame rate matters for sport 5. What about 8K? 6. Data use per hour 7. Frequently asked questions ## Resolutions at a glance | Format | Resolution | Typical streaming bitrate | Suggested broadband per screen | | --- | --- | --- | --- | | SD | 720 × 576 | 1.5–3 Mbps | 5 Mbps | | HD (720p) | 1280 × 720 | 3–5 Mbps | 8 Mbps | | Full HD (1080p) | 1920 × 1080 | 5–8 Mbps | 10 Mbps | | 4K Ultra HD | 3840 × 2160 | 15–25 Mbps | 25 Mbps | | 8K | 7680 × 4320 | 50 Mbps and up | Little or no content | Bitrates vary with the codec and the type of programme. Fast sport needs more data than a studio chat show, which is why some streams look softer during action. ## When 4K makes a visible difference Four times the pixels does not mean four times the detail on your sofa. The benefit of 4K depends on screen size and distance: on a 55-inch TV you will see it clearly from around two metres, while on a 43-inch set viewed from across a large room the difference is small. What most people notice first is not resolution but **HDR** (high dynamic range), which gives brighter highlights and richer colour. In the UK, 4K programmes often use HDR10, Dolby Vision or HLG, the format the BBC uses for live 4K. A good 1080p stream with clean motion can look better than a starved 4K one. ## What you need for 4K streaming 1. A **4K TV**, ideally with HDR, and its picture mode set to "Filmmaker", "Movie" or similar rather than "Vivid". 2. A **4K-capable device** that decodes HEVC (and ideally AV1): a recent smart TV, a Fire TV Stick 4K, an Apple TV 4K or a 4K Google TV device. Plug it into an HDMI port that supports 4K at 60 Hz with HDCP 2.2 or later. 3. Around **25 Mbps per 4K screen**, stable through the evening. A wired connection helps most. See our [internet speed guide](https://streampulsetv.co.uk/iptv-guide/internet-speed/). 4. A **4K source**: the channel or programme must actually be produced and delivered in 4K. Many live channels are still broadcast in HD. Our 4K plan page explains how [4K IPTV](https://streampulsetv.co.uk/iptv-subscription/4k-iptv/) works with these requirements, and our article [is your TV really showing 4K?](https://streampulsetv.co.uk/blog/is-your-tv-showing-4k/) shows how to check. ## Frame rate matters for sport UK broadcasts run at 50 frames per second (or 50 fields for interlaced HD). Sport looks smoothest when the whole chain keeps that rate. If motion looks jerky, check that your device is not converting to 60 Hz: many streaming devices offer a "match frame rate" setting that fixes this. ## What about 8K? **Be sceptical of "8K IPTV"** There are almost no 8K broadcasts or streams available to UK viewers, and very few homes have an 8K TV. A service advertising 8K is usually describing upscaling, or simply using the number as marketing. ## Data use per hour On unlimited home broadband this does not matter, but on mobile data or a capped plan it does. As a guide, SD uses under 1 GB an hour, HD around 1.5 to 3 GB and 4K around 7 GB or more. Switching a phone or tablet to HD or SD when you are away from home saves a lot of data. ## Frequently asked questions **Is 4K worth it for IPTV?** Yes if you have a 4K TV of 50 inches or more, a 4K-capable device and around 25 Mbps per screen. On smaller TVs, slower lines or busy household networks, a stable HD stream often looks better. **Why does my 4K stream look soft?** The source may be HD, your connection may have dropped to a lower quality level, or the device may not support the codec. Our [4K checklist](https://streampulsetv.co.uk/blog/is-your-tv-showing-4k/) walks through each cause. **Does HD use less broadband than 4K?** Much less: roughly 10 Mbps per Full HD screen against about 25 Mbps for 4K. HD is the safer choice when several people stream at the same time. Updated 11 November 2026 · Written by the StreamPulse TV editorial team ## Related reading - Subscriptions [4K IPTV in the UK: getting the best from a 4K plan](https://streampulsetv.co.uk/iptv-subscription/4k-iptv/) - Blog [Understanding 4K streaming: is your TV really showing 4K?](https://streampulsetv.co.uk/blog/is-your-tv-showing-4k/) - IPTV Guide [What internet speed do you need for IPTV?](https://streampulsetv.co.uk/iptv-guide/internet-speed/) - Devices [IPTV on a smart TV: what works and how to set it up](https://streampulsetv.co.uk/iptv-devices/smart-tv/) - IPTV Guide [How IPTV works: the journey from source to screen](https://streampulsetv.co.uk/iptv-guide/how-iptv-works/) Questions first? ## Prefer to ask a person? Tell us which devices you use and how many people watch, and we will suggest the plan that fits, with the price in pounds. 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