2.4 GHz frequency
2.4 GHz frequency is the most used for wireless data transfer at this moment. That’s because Wireless-B and Wireless-G standard — very old Wi-Fi standards perform on this frequency. If you see some wireless networks in your apartment radius, big chance that they perform on 2.4GHz frequency.
Huge number of wireless networks on the same frequency is very bad situation, because this will be reason of losing wireless transfer speed and, sometimes, quality. Commonly, it’s This is usually visibly when using some applications, which depends on real-time data transfer. For example, it can be some video or audio stream applications.
The main reason why technologies is moving towards 5 GHz is that 2.4 GHz can be divided only on 3 channels, so if all of these channels are “full”, wireless owners will face with data transfer problems. How to understand that channels already used by someone? If you see more than 3 wireless network in Wi-Fi list, every channel already used by one of these networks.
One more disadvantage of 2.4 GHz frequency usage is “side noises” in wireless channel. These noises make channel permeability worse.
5 GHz frequency
5 GHz data transfer stream can be divided on 19 channels. With this number of channels, chance, that every channel will be used by network, lower. This frequency is more appropriate for apartment buildings.
There aren’t a lot of wireless home routers models, which support 5 GHz frequency usage, but modern manufacturers are trying to change this situation. It is unlikely that someone of you neighbors have 5 GHz wireless router.
Data transfer speed is faster with 5 GHz than 2.4 GHz. If you use some services or applications which depends on wireless data transfer, better to use 5 GHz home wireless router. If compare 2.4 GHz and 5 GHz streams on empty channels, in the most cases, 5 GHz frequency will be faster.
The main 5 GHz disadvantage is that this frequency not widely used at this moment and sometimes users can’t use this, but modern routers support 2.4 GHz too, so they are compatible with other standards.