Windows Central posted a review on the Marseille mClassic
A quote from the article:
Games really do look much better.Marseille mClassic Review
A few weeks ago, a device called the Marseille mClassic arrived at my doorstep. The company advertises it as the "world's first add-on graphics processor" for consoles, and it's supposed to dramatically enhance titles being displayed in 4K. Marseille goes as far as to say that it can make the image quality of the Xbox One X better, so I decided to evaluate the device to see if it can actually improve image quality on a number of consoles.