Wi-Fi 6, 6E and 7 explained: names, 802.11 letters and what you actually need
Router boxes mix three naming schemes at once: generation numbers (Wi-Fi 6), technical letters (802.11ax) and a big speed number (AX3000). They all describe the same few things, and most of the headline speed is something no single device will ever see.
The generations side by side
| Name | Standard | Year | Bands | What it added |
|---|---|---|---|---|
| Wi-Fi 4 | 802.11n | 2009 | 2.4 + 5 GHz | Several antennas at once (MIMO), 40 MHz channels |
| Wi-Fi 5 | 802.11ac | 2013 | 5 GHz | 80 and 160 MHz channels, much faster 5 GHz |
| Wi-Fi 6 | 802.11ax | 2019 | 2.4 + 5 GHz | OFDMA (many devices share each moment), target wake time for battery life, WPA3 required for certification |
| Wi-Fi 6E | 802.11ax | 2020 | + 6 GHz | A new, uncrowded band with wide channels; WPA3 only |
| Wi-Fi 7 | 802.11be | 2024 | 2.4 + 5 + 6 GHz | 320 MHz channels, 4096-QAM, multi-link operation (MLO) |
Older letters you may see in settings: 802.11b and g (2.4 GHz only) and 802.11a (5 GHz). A b/g/n mixed mode exists only so very old devices can still join.
What AX3000, AXE5400 and BE9300 mean
The letters are the generation (AX = Wi-Fi 6, AXE = 6E, BE = Wi-Fi 7) and the number is every band's theoretical maximum in Mbps added together. AX3000 is typically about 574 Mbps on 2.4 GHz plus 2,402 Mbps on 5 GHz. One phone uses one band (or two with MLO), usually with two antennas, so in a real room it might get a few hundred Mbps. A bigger number mostly means more room for many busy devices, not a faster single download. To compare speeds properly, see Mbps vs MB/s.
The 6 GHz band (6E and 7)
- Clean space: only 6E and 7 devices can use it, so there are no old devices or busy neighbours slowing it down.
- Short range: higher frequencies pass through walls less well than 5 GHz, so it shines in the same room or with a mesh unit nearby. See 2.4 GHz vs 5 GHz for why.
- Country rules: the UK and Europe open the lower 500 MHz of the band (about 5,925 to 6,425 MHz) for Wi-Fi, while the US opens the full 1,200 MHz, so there are fewer 6 GHz channels here.
- WPA3 only: devices that support only WPA2 can't use it, which is why some routers broadcast 6 GHz under a separate name.
MLO in Wi-Fi 7
Multi-link operation lets one device stay connected on two bands at once, for example 5 and 6 GHz, and send on whichever is free or on both. The main gain is steadier latency and fewer stalls when one band gets busy, more than raw speed. Both the router and the device must support it, and early devices may only use one link at a time.
Is it worth upgrading?
- Check your devices: a router upgrade helps only the devices that support the new generation. A phone or laptop from before about 2020 is probably Wi-Fi 5; look for 802.11ax or 802.11be in its specifications.
- Check your broadband: if your plan is 70 or 150 Mbps, even Wi-Fi 5 near the router can carry it. Faster Wi-Fi then mostly helps file copies between devices at home.
- Check the real problem: dead zones are about placement and walls, not generation. A mesh with a good backhaul usually beats one faster router: see mesh backhaul and placement.
- Busy homes win most: with dozens of phones, TVs, consoles and smart plugs, Wi-Fi 6's OFDMA shares airtime far better than Wi-Fi 5.
Still dropping out rather than slow? That is usually a settings issue, not a generation one: see Wi-Fi keeps disconnecting.
Related
Wi-Fi keeps disconnecting: causes and fixes · Mbps vs MB/s: internet speed explained · Best Wi-Fi channel (1, 6, 11 and 5 GHz) · 2.4 GHz vs 5 GHz Wi-Fi · Mesh Wi-Fi backhaul and placement
Questions
What is the difference between Wi-Fi 6 and Wi-Fi 6E?
They use the same 802.11ax technology, but Wi-Fi 6E can also use the 6 GHz band, which is less crowded and has wider channels but shorter range through walls.
What does AX3000 mean on a router?
AX means Wi-Fi 6 and 3000 is the theoretical maximum of all its bands added together in Mbps, for example about 574 Mbps on 2.4 GHz plus 2,402 Mbps on 5 GHz. A single device gets much less.
Is 802.11ax Wi-Fi 6?
Yes. 802.11n is Wi-Fi 4, 802.11ac is Wi-Fi 5, 802.11ax is Wi-Fi 6 and 6E, and 802.11be is Wi-Fi 7.
Is Wi-Fi 7 worth it?
Only if your devices support it and Wi-Fi is your bottleneck, for example on a very fast fibre line or in a very busy home. On a typical broadband plan a good Wi-Fi 6 setup is plenty.
Will a Wi-Fi 6 router make my old phone faster?
Only a little, mostly from a stronger signal or less congestion. The phone keeps using its own older generation.
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