You're close. It's hard to tell in the article, but there are two separate points they worked on the engine. They got the tech up-and-running on basically a box of parts in Mid-January. It was not a fully functioning box (which is probably where the rumors around the early kits not hitting full perf). Quote from the article:







The kits with near-final perf only arrived a few weeks ago. That was when the team started really playing around with settings. So not to be pedantic, but you're correct the version he saw did not represent two days of work. It also did not represent two months of optimizations. It was maybe a week or two.



As Chris describes in the article it's primarily been time spent seeing how Scorpio reacts to different stress tests. Hence the example they joked about increasing the AA and LOD of the cars just to see what would happen.







Except I would say it's a very fair takeaway if you read the original articles - in fact it was precisely the goal. However, I prefer to say 900p/1080p games CAN run at 4K based our tests and early indications with real code.







Also Chris points out here that the tests were not just with Turn 10, but for a variety of engine types on the console to be able to hit 4K.







What I don't think should be assumed is that every developer will have the same level of headroom as Turn10. The more optimized the code on Xbox One, the more headroom developers will have on Scopio. However, as was also pointed out the in the article is we are seeing other developers have similar results.



Of course, I feel compelled to state that what developers choose to actually implement in shipping titles is a different story.