What is 2.4 Ghz and 5 Ghz?  Comparing 2.4 Ghz and 5 Ghz Wi-Fi?

When installing fiber optic internet today, we will catch 2 wifi waves in which one has an additional 5Ghz in the back. On the other hand, current wifi routers also mention dual band 2.4Gbz with 5GHz. Do you have questions? What is 2.4 GHz?, What is 5 GHz?? nice difference between 2.4GHz and 5GHz How and when should the 2.4 GHz or 5 GHz band be used? If yes in this article tip.com.vn will answer these questions for you.

I. What is 2.4 Ghz and 5 Ghz?

2.4 Ghz and 5 GHz are 2 different network bands that Wi-Fi networks use to transmit signals. The biggest difference between the 2 bands 2.4 Ghz and 5 GHz is speed. Under ideal conditions, 2.4 GHz Wi-Fi supports up to 450 Mbps or 600 Mbps while 5 GHz Wi-Fi has speeds up to 1300 Mbps.

Of course, the maximum speed is only in ideal conditions, and the actual speed depends on the wireless standard that the wifi router supports for 802.11c, 802.11b, 802.11g, 802.11n or 802.11ac.

1. 2.4GHz band.

2.4 GHz band used on many devices such as old cordless phones, radios … with the advantage of longer waves. So if you need wider wifi coverage or in an area with lots of walls or obstacles you need to use the 2.4GHz band.

As mentioned above, there are many devices that use the 2.4 GHz band, so the 2.4GHz network is often congested, leading to network drops and slower speeds than expected.

2. 5GHz band.

5 GHz band has the advantage of fast speed, stable connection and less congestion due to the use of shorter waves. However, the shortwave makes 5 GHz closer to coverage, less able to penetrate walls and solid objects. 5 GHz band also has a shorter effective range than the 2.4 GHz band.

Although it is possible to overcome this disadvantage of the 5 GHz band by using Wifi extenders or Wi-Fi Mesh systems, this is relatively poor.

II. What is a Dual-Band (Dual-Band) Router and a 3-Band (Tri-Band) Router?

Most modern wifi routers are 2 or 3 band routers. Dual-band WiFi router can broadcast the same 2.4 GHz and 5 GHz bands.

The 3-band router transmits 3 signals at the same time: 2 5 GHz signals and 1 2.4 GHz signal for a faster and more stable connection and this also makes the 3-band router significantly more expensive.

III. Should choose 2.4 or 5 Ghz.

Before asking the question of which band to choose, survey yourself and list the devices you use that support 5GHz or not. Then consider whether to upgrade the 5G router or not.

  • If you need a fast and stable network like playing games, watching 4K videos … then upgrading to 5GHz is a reasonable choice.
  • Besides, if there are a lot of wireless devices using 2.4G waves around, if you don’t switch to 5G, you will face dozens of problems with the network.
  • Of course, if you are using a modem or router with 5G available, consider when to use these 2 bands. If there are no obstacles near you, you should prioritize 5G and vice versa, if you are far away 5G will be unstable and slow, now choose 2.4GHz.


By now, you must have understood What is 2.4 Ghz and 5 Ghz? then isn’t it? In fact, today’s network modems all use dual bands of 2.4G and 5G, so which band you choose will depend on your financial ability to buy more band routers. Wish you have a very healthy Internet.