Which would rather pay for Fortnite Picture 1
picture 2
With such a low budget, I might think about whether you do not want to buy a console.
Of the two, of course, the 1st PC is better and should Fortnite just halfway liquid pack, if the graphics card is still supported I do not know.
For 200 euro you can definitely get used to better PCs with i5 2500k and GTX 770.
The upper PC would be about the minimum requirements for this game, which you probably but in the online battle could also get problems with the question because of the marginal suppleness of the gameplay.
The second computer is definitely too weak on the part of the CPU, but especially in the graphics performance.
You can forget the lower one, in your place I would prefer to buy an office PC and retrofit a used graphics card there!
Something like this:
https://www.ebay.de/...3628896981
and then a GTX 750ti or a similar graphics card that does not require extra power to install, then it fits for 200 euro and is much better than the upper PC!
But I do not have that much money