GPU upgrade would void warranty ?

Good day,

I'm thinking of upgrading the GPU on the Dell Precision T5820 from a4000 to a5000.

Problem is that I am not sure if doing so would void the warranty. I already bought the GPU and the matching GPU Bracket to mounting.

Also in some discussion I read that Dell required to provide a system with Original components when claiming warranty. In case the old GPU would not be available anymore, would this void the warranty the Workstation would be sent to dell without the previous GPU?

Is anyone familiar with this topic and could provide some insight?

Best