So, what are some good solutions to expand your storage on the new Xbox consoles and how do they perform in comparison? But with 802GB actually free to use on the internal drive, you can fill it up quickly with the size of games today (and don't forget the Xbox Series S only comes with a 512GB drive that comes out to 364GB of free space). The Xbox Series X's 1TB internal SSD is really fast, loading up some games in a matter of seconds-I tested this out in several games in my full console review (and earlier previews) and got impressive results.