Technical
Knowing roughly how much bandwidth each resolution tier consumes makes it much easier to plan a setup that actually matches your internet plan, rather than guessing and discovering a shortfall mid-stream on a busy night.
SD and HD streams are relatively light
Standard and high-definition streams use the least bandwidth per device, which is part of why they tend to stay stable even on a connection that would otherwise struggle — see our speed requirements guide for baseline numbers by tier.
4K asks for meaningfully more, per device
A single 4K stream can use several times the bandwidth of an HD stream on the same channel, which is exactly why our 4K versus FHD comparison is worth reading before assuming every device in the house should default to the highest tier available.
Multiply by simultaneous streams, not just total devices
What matters for your connection isn't how many devices exist in the house, but how many are actually streaming at the same moment — review connection limits alongside your realistic peak usage rather than your total device count.
Leave headroom, don't plan to the exact limit
Internet plans rarely deliver their full advertised speed every second of every day, so planning with some headroom above the strict minimum for your resolution mix avoids occasional dips turning into visible buffering.
Matching your household's real mix
Most households run a mix of tiers rather than everything at 4K simultaneously — tallying your actual typical mix against your connection speed gives a far more useful answer than any single generic number, and is worth revisiting any time you add a new device or a new household member starts streaming regularly.