Nvidia 4070 vs AMD 7800 XT

I have both the 4070 and the 7800 xt in hand, and I am stuck on which one to put in my main pc. I have a main pc where I play most of my games and do my work on, and a sim racing pc that I only use for that. I heard the performance of them are pretty much the same. Which one would you recommend to put where?