The Steam Deck has arguably become the most successful Linux-based gaming PC to date, though many might overlook that its operating system, SteamOS, is rooted in Linux. One of its standout features is the Proton compatibility layer, which enables seamless play of Windows games on Linux platforms without substantial hassle. Recent reports indicate that Valve is testing an ARM-compatible version of Proton, referred to as “Proton-arm64ec-5.” This version, while not yet available to the public, has been identified in the SteamDB.info database, as highlighted by Tom’s Hardware, and could represent a significant step forward for gaming on ARM devices.
The “arm64” tag suggests this variant is specifically engineered for ARM architecture, commonly found in various devices, particularly mobile ones like smartphones and tablets. This shift follows Apple’s notable transition from Intel processors to its own ARM-based chips for MacBook models in 2020. Furthermore, the push for ARM-based Windows devices, such as those featuring Qualcomm’s Snapdragon processors, emphasizes the growing appeal of this architecture.
The introduction of an ARM-optimized Proton could broaden the horizon for SteamOS, particularly on handheld gaming devices similar to the Steam Deck. Since the debut of the Nintendo Switch in 2017, a plethora of handheld gaming consoles utilizing ARM chips has emerged, indicating a burgeoning market. Moreover, Valve appears interested in extending SteamOS beyond the confines of the Steam Deck, eyeing devices like the Asus ROG Ally. Another avenue could involve a future ARM-based iteration of the Steam Deck itself, especially as the existing model based on AMD processors starts to feel outdated.
Additionally, this venture into ARM compatibility could enhance the performance of Steam on Linux platforms. Historically, ARM gaming hardware has leaned towards Android, catering predominantly to mobile gaming and classic game emulation. While running Windows games on ARM-based Snapdragon laptops is an option, it often results in considerable performance drawbacks. MacOS experiences similar limitations, but the impact is less pronounced as Mac systems are not the primary focus for gamers.
It’s important to note that Valve has not yet confirmed any of these developments, and much of this speculation arises from the mere presence of the “arm64” label in the SteamDB entry. However, the idea of a smaller, more efficient, and potentially cost-effective Steam Deck variant running on ARM architecture is an enticing prospect for many gaming enthusiasts.