What is the difference between the xbox one x and the xbox one s ? Is it just that the xbox one x loads games faster
There's a bit more to it than that. The xbox one x is designed to take advantage of 4k tvs. Virtually every aspect of it has been upgraded to achieve this and it is significantly more powerful as a result.
Having said that, if you don't have a 4k TV and don't intend to buy one in the next year, there's no point in getting an xbox one x.
The Xbox series X is also due out at Christmas. This will bring a generational leap in performance. So it might be worth getting the cheaper xbox one s for now to hold you over, if that's something you might be interested in.