WiFi 6 realistic speed (good read)

I ran into this website with a funny name but actually a lot of helpful info for those who are interested.

Understand Wi-Fi 4/5/6/6E (802.11 n/ac/ax) (duckware.com)

★ The big advance in Wi-Fi 6 was efficiently transmitting to a large number of users at the same time (but only for new Wi-Fi 6 clients, not prior wifi generation clients).

Wi-Fi 6 was designed from the ground up to provide speed improvements (HE: High Efficiency) to a group of Wi-Fi 6 clients as a whole, not an individual Wi-Fi 6 client.

Wi-Fi 6: The sixth generation of wifi is 802.11ax (2019). It provides a maximum PHY speed of 4.8 Gbps on an 80 MHz channel using 8×8 MIMO. 

Gen	Spec	Year	Speeds	New Name
Sixth	802.11ax	2019	600 to 2401 Mbps	Wi-Fi 6

2401 Mbps speed: The 2401 Mbps maximum PHY speed is for an 80 MHz channel to an 4×4 client. However, a much more realistic maximum PHY speed is 1200 Mbps for an 80 MHz channel to a 2×2 client (840 Mbps throughput), and for a realistic distance away from the router, a PHY speed of 864 Mbps (600 Mbps throughput).

The goal of Wi-Fi 6: The primary goal of Wi-Fi 6 is 'high efficiency' (HE). In a nutshell, Wi-Fi 6 adds 'cellular' technology into wifi. This was accomplished by changing to the OFDMA modulation scheme and changing the wifi protocol to directly support many users at once. The result is greatly improved overall (aggregate) capacity in highly 'dense' (lot of devices) environments (like schools, stadiums, convention centers, campuses, etc).

PS PHY (physical) speed is the speed at which the bits are actually sent.  Expect throughput anywhere from 60% to 80% of PHY speed.