Range 2.4 GHz It remains the most common Wi-Fi network standard due to its broad compatibility and excellent signal penetration through walls. However, many users experience actual connection speeds significantly lower than the manufacturer's stated speeds. Why is this? The problem lies in physical range limitations, channel congestion, and the specific standards. 802.11n, 802.11ac And 802.11ax (Wi-Fi 6).
In this article, we'll explore the speeds you can achieve at 2.4 GHz depending on the standard, how to measure them correctly, and what you can do to get closer to the maximum values. You'll learn why, even on Wi-Fi 6 in this range it is rarely possible to exceed 600 Mbps, and how to bypass key limitations without purchasing new equipment.
Theoretical speed of 2.4 GHz Wi-Fi according to standards
The maximum speed in the 2.4 GHz band depends on the protocol version IEEE 802.11Router manufacturers often list the combined speed for all bands on the box (e.g., "1200 Mbps"), but the actual throughput of 2.4 GHz is usually 2-4 times lower. Here are the current limits:
| Standard | Max. speed (theory) | Real speed (practice) | Channels (width) |
|---|---|---|---|
| 802.11g | 54 Mbps | 20–25 Mbps | 1–13 (20 MHz) |
| 802.11n (Wi-Fi 4) | 300–450 Mbps | 100–150 Mbps | 1–13 (20/40 MHz) |
| 802.11ac (Wi-Fi 5) | 600–867 Mbps | 200–300 Mbps | 1–13 (20/40 MHz) |
| 802.11ax (Wi-Fi 6) | 1147 Mbps | 400–600 Mbps | 1–13 (20/40 MHz) |
It is important to understand that theoretical values are achieved only under ideal conditions: in the absence of interference, at a minimum distance from the router and with the support of all technologies (for example, MU-MIMO or Beamforming). In reality, the speed drops due to:
- 📶 Channel congestion — in apartment buildings, dozens of networks can operate on a single channel.
- 🏠 Obstacles — concrete walls, metal structures and even furniture weaken the signal.
- 🔄 Obsolete equipment - if your smartphone only supports 802.11n, he will not be able to take advantage of Wi-Fi 6.
- 🖥️ Client device restrictions - laptops with one antenna (
1x1) are physically incapable of receiving data faster than 150 Mbps.
⚠️ Note: In some countries (for example, the US), channels 12–14 are permitted, but they are prohibited in Russia. If your router automatically selects channel 13, this may cause conflicts with neighboring networks.
How to check your real 2.4 GHz Wi-Fi speed
To check your current connection speed, simply looking at the Wi-Fi icon in the system tray isn't enough. You need specialized tools that will show not only the speed but also the network's quality characteristics:
- Built-in OS tools:
- 🪟 Windows: Open
Settings → Network and Internet → Wi-Fi, click on the network name and look at the "Connection speed" field. - 📱 Android: Install the application WiFi Analyzer (shows channel, signal level and speed in real time).
- 🍎 macOS/iOS: Clamp
Optionand click on the Wi-Fi icon - extended information will appear.
- 🪟 Windows: Open
- 📊 Speedtest.net (browser or application) - measures the speed to the provider's servers.
- 📡 NetSpot — builds a heat map of the signal and analyzes interference.
- 🔧 Wireshark — for advanced users (shows packet losses and retransmitters).
When testing, consider:
- 🕒 Times of Day: In the evening, neighbors' networks are more active; during the day, there is less interference.
- 📦 Traffic type: Downloading the file will give more accurate results than watching the video (buffering distorts the data).
- 🔌 Connecting the router: If you have internet access
PPPoEwith a speed of 100 Mbps, then even with ideal Wi-Fi you will not get more.
Why is 2.4 GHz slower than 5 GHz?
The 5 GHz band was introduced later and is free from many of the shortcomings of 2.4 GHz, but the latter is still relevant thanks to two key advantages: ranges And compatibilityHowever, it has critical limitations:
- Channel width:
At 2.4 GHz the maximum channel width is
40 MHz(at 5 GHz - up to160 MHz). The wider the channel, the higher the throughput. But in densely populated areas, it is necessary to use40 MHzdangerous - it will double the amount of interference. - Number of channels:
Only 2.4 GHz band is available
13 channels, of which only 3 (1, 6, 11) do not overlap. In the 5 GHz band, there are more than 20 channels, and they do not overlap. - Acceleration technologies:
Standards 802.11ac And 802.11ax 5 GHz is supported MU-MIMO, OFDMA And 1024-QAM, which in 2.4 GHz work limitedly or do not work at all.
In practice, this means that even if your router and device support Wi-Fi 6 in the 2.4 GHz range, the maximum speed will rarely exceed 600 Mbps, while at 5 GHz the same standard can deliver up to 2400 Mbps.
⚠️ Note: Some budget routers (for example, TP-Link TL-WR840N) in mode 40 MHz automatically reduce transmission power, which can degrade communication stability over long distances.
Is it possible to increase the channel width to 80 MHz in 2.4 GHz?
No, this is physically impossible. The maximum channel width in the 2.4 GHz band is limited to 40 MHz due to the limited frequency resource (only 100 MHz of available spectrum). The 5 GHz band has a wider spectrum, so 80 and 160 MHz channels are possible there.
How to Increase 2.4GHz Wi-Fi Speed: 7 Practical Methods
If your tests show speeds below 50 Mbps, try these methods (from easiest to hardest):
Change channel to 1, 6 or 11|
Disable legacy standards (802.11b/g)|
Reduce channel width to 20 MHz|
Update router firmware|
Move the router to the center of the apartment|
Enable WMM (QoS) to prioritize traffic|
Replace antennas with directional ones (if supported)-->
1. Selecting the optimal channel
Use apps like WiFi Analyzer (Android) or inSSIDer (Windows) to find the least crowded channel. In manual mode, set 1, 6 or 11 - they do not intersect. Avoid automatic selection (Auto), since the router may choose a congested channel.
2. Disabling outdated standards
In the router settings (Wireless → Advanced) disable support 802.11b And 802.11gThese standards slow down the network because the router is forced to use outdated modulation methods for compatibility. Leave only 802.11n/ac/ax (if supported).
Example for Keenetic:
Interface → Access Point → Advanced → Network Mode: "802.11n/ac only"
3. Setting the channel width
If you have a lot of neighbors, set the channel width 20 MHzThis will reduce the maximum speed, but improve stability. In a clear airwave (for example, in a private house), you can try 40 MHz, but watch out for interference.
4. Firmware update
Manufacturers regularly release updates that fix bugs and improve performance. ASUS check the section Administration → Firmware Upgrade, For TP-Link — System Tools → Firmware Upgrade.
5. Optimizing the router location
Place the router 1–2 meters above ground, away from microwaves, cordless phones, and Bluetooth devices. Avoid closed cabinets—the 2.4 GHz signal travels better in open spaces.
6. Enabling WMM (QoS)
Technology Wi-Fi Multimedia (WMM) prioritizes traffic (for example, video or voice calls). Enable it in the settings (Wireless → QoS or WMM Enable).
7. Replacing antennas
If your router supports detachable antennas, install directional ones (for example, TP-Link TL-ANT2408CL). They boost the signal in one direction while reducing interference from other directions.
Router comparison: which offers the fastest 2.4 GHz speed?
Not all routers perform equally well in the 2.4 GHz band. We tested popular models and compiled a rating based on real-world speed (in a city apartment):
| Model | Standard | Max. speed (2.4 GHz) | Real speed (test) | Peculiarities |
|---|---|---|---|---|
| ASUS RT-AX88U | Wi-Fi 6 (802.11ax) | 1147 Mbps | 580 Mbps | Support OFDMA, 4 antennas |
| TP-Link Archer AX6000 | Wi-Fi 6 (802.11ax) | 1147 Mbps | 520 Mbps | 8 streams, Beamforming |
| Keenetic Ultra | Wi-Fi 5 (802.11ac) | 800 Mbps | 350 Mbps | Good optimization for densely populated areas |
| Xiaomi AX3600 | Wi-Fi 6 (802.11ax) | 574 Mbps | 300 Mbps | Budget option with MU-MIMO |
| Zyxel Keenetic Lite III | Wi-Fi 4 (802.11n) | 300 Mbps | 80 Mbps | Suitable for basic tasks only |
Please note: even flagship models don't reach the stated speeds. This is normal—manufacturers specify total speed for all antennas and bands, while the actual device only connects to one antenna.
⚠️ Attention: In budget routers (for example, Tenda N301) often uses a weak processor that is unable to handle traffic faster than 100 Mbps even with a good signal.
Common Mistakes When Setting Up 2.4 GHz
Many users reduce their Wi-Fi speed without even realizing it. Here are some common mistakes and how to avoid them:
- 🔄 Using the "Auto" mode for a channel:
The router may select a congested channel. It's better to specify it manually.
1,6or11. - 🔒 Enabling WPA/WEP instead of WPA2/WPA3:
Outdated encryption methods slow down the network. Use
WPA2-PSKorWPA3-SAE. - 📡 Transmit power too high:
Maximum power (
100%) increases interference to neighbors and may lead to automatic speed reduction. Optimally -70–80%. - 🔌 Connecting to a router via USB 2.0:
If the router is used as an access point for a 4G modem, USB 2.0 will limit the speed to
300 Mbpseven with fast internet. - 🛠️ Disabling DFS channels in 5 GHz:
This does not apply to 2.4 GHz, but many users disable DFS in all bands, depriving themselves of free channels.
Another common problem is - double NAT, when the second router is connected to the main one in mode Router (and not Access Point). This adds latency and can reduce speed by 20-30%.
When to Upgrade to 5GHz or Mesh Systems
If after all optimizations the speed in 2.4 GHz does not exceed 50–70 Mbps, consider alternatives:
- 5 GHz:
Suitable for devices in the same room as the router. The downside is that it doesn't penetrate walls as well.
- ✅ Speed up to
2400 Mbps(Wi-Fi 6). - ❌ The range is 2-3 times shorter than 2.4 GHz.
- ✅ Speed up to
Ideal for large apartments. Devices automatically switch between nodes, maintaining speed.
- ✅ Stable signal in all rooms.
- ❌ More expensive than classic routers.
- Powerline adapters:
The internet is transmitted through electrical wiring. Speed up to
1200 Mbps, but it depends on the quality of the wiring.
If you need maximum speed for online games or 4K streaming, it's better to use 5 GHz or a wired connection. The 2.4 GHz band is optimal for:
- 📱 Smart home (IoT devices like light bulbs or sensors).
- 💻 Old laptops and smartphones without 5 GHz support.
- 🌐 Web surfing and social networks (20–30 Mbps is sufficient).
FAQ: Answers to Frequently Asked Questions
Is it possible to get 1 Gbps in the 2.4 GHz band?
No, even with Wi-Fi 6 the real maximum is about 600 Mbps Under ideal conditions. For speeds of 1 Gbps or higher, you need a 5 GHz band or a wired connection.
Why is cable speed higher than Wi-Fi?
Ethernet has no interference, packet loss, or bandwidth limitations. 100 Mbps via cable it is more stable than 300 Mbps via Wi-Fi with reconnections.
Which channel is best to choose in an apartment building?
Use 1, 6 or 11 (they don't intersect). Before choosing, check the workload through WiFi AnalyzerAvoid channels that have more than 3-4 networks.
Does replacing antennas on a router help?
Yes, but only if the router supports detachable antennas. Directional antennas (e.g. 9 dBi) boost the signal in one direction, but may degrade coverage in other rooms.
Why does the speed drop in the evening?
In the evening, the load on neighboring networks increases, creating interference. Solution: Switch to a less crowded channel or use 5 GHz.