E3 2017 - Microsoft will have more than 40 games enhanced on Xbox One X when the console ships this November, and Xbox exec Phil Spencer discusses how much work goes into enhancing games on the new console.
As we've said multiple times, not every game will run at native 4K 60FPS on the Xbox One X - in fact, most of them won't. This is something that Xbox division head Phil Spencer has also said and iterated upon since the $499 Xbox One X was announced at E3 2017. Developers have total free reign to use the Xbox One X's higher-end power as they see fit, which includes the 6TFLOPs Polaris-derived GPU alongside a 2.3GHz Jaguar "Evolved" CPU, 12GB GDDR5 RAM at 326GB/sec, and a slew of other optimizations like DirectX 12 built right into the GPU's command processor, support for FreeSync 2, and the ability to hit native 4K with HDR enhancements and adequate frame rates.
The Xbox One X's native gameplay boost is comparable to Sony's Boost Mode feature on the PlayStation 4 Pro, which improves the performance of games that don't yet have specific PS4 Pro patches.
Microsoft has promised that all existing and new Xbox One games will run better on the Xbox One X by default thanks to the system's hardware, but developers have to add in Xbox One X Enhancement Upgrades to their games for the titles to fully leverage the console's power and enable features like native 4K textures, dynamic resolution scaling, 4K checkerboarding with HDR, improved FPS, improved draw distances, etc. Xbox's Phil Spencer confirmed that over 40 games would have Xbox One X enhancements at Microsoft's E3 2017 showcase, and recently talked about how easy it is for developers to bring over 4K assets from their PC builds to run on the Xbox One X.