The Nighthawk Tri-band Mesh WiFi 6 System (MK83) is designed to blanket the whole home with high-performance WiFi to eliminate dead zones in every room of the house. The powerful quad-core processor of the new system delivers more processing power than WiFi 5, increasing the overall WiFi performance. The new WiFi 6 technology powers up to four times the performance and capacity of previous generation WiFi 5 (802.11a/b/g/n/ac) but still provides 100% backwards compatibility to earlier generations of WiFi devices.
Source: https://www.helpnetsecurity.com/2021/03/18/netgear-nighthawk-tri-band-mesh-wifi-6/