InWin's clever modular PC case system can quickly spiral into your very own behemoth

Over at Computex 2023, InWin showed off its ModFree PC chassis system. It's essentially a handful of interchangeable PC case frames, which can be connected in all sorts of ways to create a fully modular PC. With it, you can build up a smart Mini-ITX, or maybe a mid-tower, or maybe a monstrous behemoth that could house multiple powerful PCs all at once.

There are a few key bits making up the ModFree system. The Mod-I module comes with a motherboard tray, rear fan mount, and PCIe cutouts for the main core of a PC. That can be paired up with the Mod-II, which houses the PSU. Then there's the Mod-III, which has options for a graphics card, masses of storage, liquid cooling or three fans. Combined, you get a large ATX PC chassis, though you can ditch the Mod-III for a smaller case.

You needn't use these Mods in this exact way, however. InWin showed off a Mini-ITX case using two Mod-IIs and a Mod-III.

And if you want to go really hard, you can use many, many more modules in a single build. InWin had a ModFree chassis on display that had space for 360mm radiators on just one of its sides. From what I can tell it's made up of four Mod-I modules and four Mod-II. 

And these modules are only the frame. While you could leave your PC as-is inside the frame—it actually looks pretty industrial if done right—InWin has various plates to add a little style. It showed off a wood-effect finish over at Computex, though there's also a standard black finish and another in white and black with some yellow decals.

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Jacob Ridley
Managing Editor, Hardware

Jacob earned his first byline writing for his own tech blog. From there, he graduated to professionally breaking things as hardware writer at PCGamesN, and would go on to run the team as hardware editor. He joined PC Gamer's top staff as senior hardware editor before becoming managing editor of the hardware team, and you'll now find him reporting on the latest developments in the technology and gaming industries and testing the newest PC components.