Lenovo’s Legion Go S with SteamOS is now shipping for $600, and according to hands-on testing by ZDNET, it doesn’t just compete with Valve’s Steam Deck—it makes the Windows-powered Legion Go S version instantly obsolete. The secret is SteamOS, Valve’s Linux-based gaming operating system that trims Windows bloat and delivers a console-like experience on the 8-inch, 120Hz handheld. For the first time, a major OEM is selling a Steam-first device that sidesteps Microsoft’s OS entirely, and the result is a portable gaming powerhouse that feels purpose-built for its audience.
The move marks a strategic expansion for Valve. After years of keeping SteamOS exclusive to its own hardware, the company opened the platform to third-party manufacturers in January. Lenovo is the first partner to ship a “Powered by SteamOS” device, and the early verdict is clear: the OS is the star. By shedding Windows 11’s overhead, the Legion Go S gains snappier performance, longer battery life, and an interface that puts your game library front and center with zero distractions.
What makes SteamOS a game-changer for handhelds
SteamOS is more than just a stripped-down Linux distribution. It’s a gaming-focused environment built around the Steam client, designed from the ground up for controller input and small screens. The interface boots directly into Steam Big Picture Mode, which feels intuitive on a handheld’s thumbsticks and touchscreen. There’s no desktop clutter, no antivirus pop-ups, and no background processes chewing through precious battery—just your games.
Under the hood, Proton translates Windows-only games to run on Linux with impressive efficiency. Valve has invested heavily in this compatibility layer, and the result is a massive library of playable titles. While not every game works flawlessly—especially those with kernel-level anti-cheat—the verified and playable catalog now spans thousands of games, from indies to AAA blockbusters. SteamOS also enables quick suspend/resume, per-game performance profiles, and integrated features like cloud saves and game recording without third-party overhead.
Hardware that punches above its weight
Physically, the SteamOS Legion Go S is nearly identical to its Windows counterpart. The only visible difference is a shift from Glacier White to a moody Nebula purple shell. The chassis remains comfortable, with textured grips that prevent slipping during long sessions. At 1.62 pounds (around 730 grams), it’s slightly heavier than the Steam Deck OLED’s 1.4 pounds, but the difference is subtle in real-world use.
The 8-inch LCD touchscreen is a standout. It runs at a native 1920×1200 resolution with a 120Hz refresh rate and support for variable refresh rate (VRR). ZDNET’s reviewer praised the smoothness: “I value higher refresh rates because they ensure smoother animations and faster response times, which can mean the difference between winning and losing.” The 120Hz panel gives the Legion Go S a clear advantage over the Steam Deck OLED’s 90Hz limit, even if the latter’s OLED panel offers superior contrast and color vibrancy.
Lenovo equipped the handheld with AMD’s Ryzen Z2 Go APU, featuring a custom Zen 3+ architecture and Radeon RDNA 2 graphics. The SteamOS model comes with 16GB of LPDDR5X RAM and a PCIe NVMe SSD in 512GB configurations. Connectivity includes dual USB4 ports, a microSD slot, and a 3.5mm audio jack. Hall-effect analog sticks promise resistance to drift, and the rear triggers can be switched between short and long travel on the fly. The tiny touchpad beneath the right stick, however, remains a weak spot. ZDNET notes it’s “so small that it’s difficult to get precise movements” and often caused mis-aiming in shooters. It works passably as a button or coarse aim assist, but it’s a far cry from the Steam Deck’s large, precise trackpads.
Gaming performance: from indie bliss to AAA compromise
On lightweight titles, the Legion Go S shines. Games like Hades, Stardew Valley, and platformers run at a buttery-smooth 120 frames per second on high settings. The 8-inch display makes pixel art pop, and the responsive controls keep you immersed. For these experiences, the device feels like a premium, dedicated gaming handheld—no different from a high-end phone with a controller attached, but with a vastly superior game library.
AAA games are a tougher sell. Lenovo’s Z2 Go APU is efficient for its size but can’t match desktop-class GPUs. In testing with Monster Hunter Wilds, the Legion Go S managed playable frame rates only after dialing settings down to medium-low and enabling upscaling. Textures became blurry, and performance dipped during particle-heavy scenes. The experience is typical of current handheld PC hardware: playable, but not the way you’d play on a gaming laptop or tower. As ZDNET put it, “the fact that it can even run these titles at all is commendable in its own right.” The Steam Deck faces identical constraints, reinforcing that this is a category-wide limitation.
SteamOS helps mitigate the performance gap with its built-in performance profiles. Pressing the dedicated menu button reveals a lightning-bolt icon that opens a performance page. From there, you can adjust TDP, GPU clock, resolution scaling, and frame rate caps. Even better, you can activate a game’s default profile that Steam curates for optimal balance. This auto-tuning takes the guesswork out of tweaking settings and is a huge quality-of-life feature for casual users.
Battery life: still the handheld Achilles’ heel
Battery life remains the most stubborn bottleneck. The Legion Go S packs a 55.5Wh battery, which is comparable to other Windows handhelds but still falls short of all-day gaming fantasies. In ZDNET’s tests, Monster Hunter Wilds drained the battery in roughly an hour and 15 minutes. Lighter games like Hades 2 stretched that to about two hours. That’s consistent with the broader handheld PC landscape—you’ll always want a USB-C charger or a high-wattage power bank nearby for extended sessions.
SteamOS does show better efficiency than Windows on the same hardware, thanks to fewer background processes and more aggressive power management. However, the physics of battery capacity and APU power draw remain unchanged. For commuters or casual couch gamers, two hours of indie gaming is plenty; for long-haul flights or day trips away from outlets, it’s a clear limitation.
Legion Go S vs Steam Deck OLED: a buyer’s guide
The SteamOS Legion Go S enters a market already defined by Valve’s own hardware. The Steam Deck OLED starts at $549, has a 7.4-inch OLED screen with HDR, 90Hz refresh, larger trackpads, and a slightly lighter build. The Legion Go S costs $600 and counters with a bigger, faster 120Hz LCD and retail availability through Best Buy and other chains.
For many, the screen choice becomes the deciding factor. OLED delivers perfect blacks, vivid colors, and unbeatable contrast for cinematic single-player games. The 120Hz LCD, however, makes fast-paced action and esports titles feel more responsive. If you play competitive shooters or rhythm games, the Legion’s panel may tip the scales. If you treasure image quality above all, the Steam Deck OLED remains king.
Ergonomics and input also differ. Lenovo’s grips and adjustable triggers are comfortable for most hand sizes, but the tiny touchpad is a real downgrade for mouse-driven games. The Steam Deck’s larger trackpads make strategy titles and shooters far more playable without an external mouse. Weight is a minor factor—the Deck is about 0.2 pounds lighter, which adds up over hours of play but isn’t a dealbreaker for most.
Software-wise, both run SteamOS, so the library and experience are near-identical. However, Valve’s own hardware may receive faster OS updates and has a proven repair and spare-parts network. Lenovo’s device benefits from mainstream retail support and warranty channels that some users prefer.
The Windows elephant in the room
Lenovo still sells a Windows 11 Legion Go S, but ZDNET’s reviewer is blunt: “With the release of the SteamOS Legion Go S, I consider the previous Windows model obsolete.” That’s a strong statement, and it’s born from the real-world benefits of shedding Windows. The Windows version suffers from higher background resource usage, more frequent pop-ups, and a desktop-centric interface that clashes with handheld ergonomics. SteamOS on the same hardware feels snappier, runs longer on battery, and eliminates the distraction of Windows updates and notifications.
That said, Windows isn’t without merit. If you rely on Xbox Game Pass, play competitive multiplayer titles that use anti-cheat systems not fully supported on Linux, or need to run Windows-only productivity apps, the Windows handheld still has a place. The decision ultimately hinges on your game library and whether you’re willing to trade flexibility for a focused experience.
Anti-cheat compatibility: a lingering pain point
Kernel-level anti-cheat software remains the biggest obstacle for SteamOS adoption. While many games now work through Proton thanks to developer and anti-cheat vendor support, others remain blocked or broken. Popular competitive shooters and battle royale titles often rely on anti-cheat solutions that operate at the kernel level and require strict Windows environments. Community forums are filled with mixed reports: some games run perfectly, others crash at startup, and some players report bans for using Proton—though Valve works to prevent false positives.
Before investing in a SteamOS handheld, check your must-play multiplayer titles against ProtonDB and Steam’s own compatibility badges. The situation is improving, but it remains a patchwork. For gamers whose social circles revolve around unsupported titles, a Windows handheld or a traditional gaming laptop is still the safer bet.
What Lenovo’s SteamOS move means for the market
Lenovo shipping a SteamOS handheld is a watershed moment. It validates Valve’s vision of a multi-vendor, Linux-powered portable gaming ecosystem. With a major OEM onboard, SteamOS gains credibility beyond the enthusiast community. Retail availability through Best Buy puts a Steam-first device in front of casual shoppers who might never have ordered a Steam Deck directly from Valve.
This also accelerates Proton development. As more hardware ships with SteamOS, anti-cheat vendors and developers face stronger incentives to ensure compatibility. While the transition will be slow and developer-dependent, the direction is clear: Linux gaming is no longer a niche within a niche.
Windows handhelds aren’t going away. ASUS ROG Ally, MSI Claw, and Lenovo’s own Windows models will continue to serve users who need Windows for work, Game Pass, or anti-cheat-restricted games. The market is bifurcating into two camps: the Windows power-user device and the SteamOS console-like device. Lenovo is smart to offer both, giving consumers a genuine choice based on software preference rather than just hardware specs alone.
Who should buy the SteamOS Legion Go S?
If you live in the Steam ecosystem, play mostly single-player or indie games, and value a clutter-free, console-like experience, the Legion Go S with SteamOS is an excellent choice. The 120Hz screen, comfortable controls, and streamlined OS make it one of the best handhelds you can buy at this price point. It’s a direct competitor to the Steam Deck OLED, and for many, the higher refresh rate and larger screen will justify the extra $50 and slight weight penalty.
If your gaming habits include competitive multiplayer titles locked to Windows anti-cheat, or if you need a device that doubles as a productivity machine, stick with a Windows handheld or a laptop. The SteamOS Legion Go S is a dedicated gaming device, not a PC replacement. It’s best treated as a companion to a desktop or laptop, not a substitute for one.
The bottom line
Lenovo’s SteamOS Legion Go S is a signpost for the handheld PC market. It proves that Valve’s operating system can thrive on third-party hardware and that a focused gaming OS can be a product’s biggest selling point. By ditching Windows, Lenovo created a handheld that’s smoother, more efficient, and simply more enjoyable for gaming than its Windows twin. The battery life and AAA performance limitations are real, but they’re shared by all handheld PCs today. What sets the Legion Go S apart is its effortless simplicity. For Steam lovers, that may be worth more than a spec sheet can measure.