Tutorial Wifi router speeds marketing hyps and realities.

MacDefender

Level 14
Verified
Oct 13, 2019
659
Good article! One thing I’d like to point out is that wifi speeds are measured in bits per second of wifi frames, not of ethernet frames.

For example, some of the coding schemes in the table above are described as “2/3”. That means that every 3 bits of wifi frames is 2 frames of ethernet frames. So an 866mbps 2/3 connection with 0% in-the-air loss is still only 566mbps of actual data throughput.
 

JoyousBudweiser

Level 11
Verified
Aug 22, 2013
538
Good article! One thing I’d like to point out is that wifi speeds are measured in bits per second of wifi frames, not of ethernet frames.

For example, some of the coding schemes in the table above are described as “2/3”. That means that every 3 bits of wifi frames is 2 frames of ethernet frames. So an 866mbps 2/3 connection with 0% in-the-air loss is still only 566mbps of actual data throughput.
People still buy 2.4 ghz Wi-Fi router which are advertised at speeds of 300 Mbps but in reality it can only give a data throughput of maximum 75 or 80 MBps at best. Companies are exploiting people's ignorance.
 

MacDefender

Level 14
Verified
Oct 13, 2019
659
People still buy 2.4 ghz Wi-Fi router which are advertised at speeds of 300 Mbps but in reality it can only give a data throughput of maximum 75 or 80 MBps at best. Companies are exploiting people's ignorance.

They get people on the other end of the spectrum too -- buying "AX12000" APs where the max 5GHz speed requires Wifi 6, 8x8 antennas, and 160MHz, while the best wifi 6 client currently only supports 2x2 (1200mbps air rate), and is no faster when connected to a normal 4x4 wifi 6 AP.
 
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