Marseille targeted the $100 mClassic at every gamer, and some results were better than others. The external scaling, antialiasing, and sharpening processor can’t do everything. There are some good use cases, though.
The mClassic isn’t the perfect companion for a RetroTINK 2x unless you like 2xSaI-style effects. Meanwhile, the external processor did a nice job of upscaling 720p and 1080p retro games from the Super Nt and NES Classic Mini. That sharpening carries over to the OSSC outputting 720p or 1080p, too.
In 3D content, higher-resolution games seemingly benefited more from the processing. Amped 2 on the Xbox looked really nice and clean (analog noise aside) both in the menus and on the slopes. PlayStation 3 games like Uncharted 3 looked great, too. It even pleasantly processed Disgaea D2‘s character portraits and fonts. The mClassic didn’t do as well with 480p games like Need for Speed Underground 2, but there’s less data to work with at that resolution.
The Switch is maybe the most interesting use case. The console itself has to deal with the constraints of lower-power processor and GPU components, and it can adjust the output resolution easily enough. If you’re playing games that either stutter in docked mode or have to rely on dynamic resolution changes, switching to 720p and upscaling with the mClassic could provide a smoother, more consistent experience. Most games these days don’t have a problem dynamically changing resolution, however. The cost of any smoothness gains is absolute image quality. I’d personally just put the Switch in 1080p mode and play. The mClassic did nice work at 1080p on Super Mario Odyssey.
In PC games, it’s clear that your best bet is just buying a faster graphics card. A real 1080p image was much more detailed and sharp than an upscaled 720p one. Since the PC can change resolutions, the mClassic feels more like a stopgap. The mClassic’s $100 cost is better used towards an upgrade, if your PC needs one.
Marseille delivered on mClassic’s promise to the extent that low-resolution assets allow. Despite the name, perhaps the best use for some more recent systems. The Switch, PS3, and original Xbox benefited from the mClassic in different ways. If your favorite console can’t get a graphics card upgrade, the mClassic just might be the kick it needs.