Will a new Extreme with and older extreme used as a network extender work at optimal performance?

IIf I replace my Earlier Extreme with the newer model Extreme and use the earlier model to extend my network, will the network work at the new Extremes faster speeds or will my network be downgraded to the older Extremes slower performance over all of my network?
thanks

QA AirPort Extreme Base Station

QA AirPort Extreme Base Station

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1 Answer from the Community

  • Answer

    When the older is used to extend the newer, the newer is not downgraded.