Starting August 1, the Xbox Series X now costs $799.99, up from its $649.99 price just weeks earlier. Microsoft has now raised Xbox prices three separate times in about 15 months. This latest hike is the biggest single jump the Xbox Series line has ever seen, adding $100 to $150 depending on the model. The company pointed directly at memory chips, the parts that store data and help games load. Companies building massive AI data centers are buying up huge amounts of memory chips.