The Handheld PC War in 2026
Two machines currently dominate the premium handheld PC conversation: the Asus ROG Ally X and the Lenovo Legion Go S. Both run Windows 11, both target the same audience of PC gamers who want their library in their hands, and both cost enough that getting the choice wrong hurts. The question is not which one looks better on a spec sheet – it is which one actually holds up when you are three hours into a session of Cyberpunk 2077 or grinding ranked in Marvel Rivals.
This breakdown covers eight specific categories where the two devices genuinely differ. No filler, no ties called draws just to seem balanced. Where one machine wins, it wins for a concrete reason.
1. Raw GPU Performance
The ROG Ally X runs on AMD’s Z1 Extreme APU, which packs RDNA 3 graphics with 12 compute units tuned for sustained handheld output. Asus pushed the TDP ceiling on the Ally X to 30W in Turbo mode, which gives it a meaningful performance advantage over the original Ally in GPU-heavy titles. At 1080p medium settings, most modern games run smoothly enough that the experience feels like a real PC rather than a compromise.
The Legion Go S ships with AMD’s Z2 Go chip in its base configuration, which is a step down from the Z1 Extreme – fewer compute units, lower clock ceiling. Lenovo does offer a version with the Z1 Extreme as well, so the comparison gets complicated depending on which SKU you are looking at. On the Z2 Go SKU, the Ally X wins this category cleanly. On the Z1 Extreme Legion Go S, the gap narrows to the point where the GPU performance difference is nearly irrelevant in most titles at the device’s native 1080p panel.
Winner: ROG Ally X – at equivalent price tiers, it delivers more GPU headroom, especially in demanding open-world and graphically intensive titles.
2. Battery Life
Battery life is where the Ally X made its biggest generational leap from the original ROG Ally. Asus doubled the battery capacity to 80Wh, and it shows in real-world use. Playing at the Performance preset rather than Turbo, you can realistically expect around 2 to 3 hours of demanding game time, and lighter titles or emulation can push closer to 4 hours.
The Legion Go S carries a 55.5Wh battery, which is noticeably smaller. In practice, that translates to shorter sessions before you are hunting for a USB-C cable. Lenovo leans on its power efficiency tuning to close some of that gap, and the Go S does manage power draw reasonably well – but physics win here. A bigger battery delivers more playtime.
Winner: ROG Ally X – the 80Wh cell is the single biggest quality-of-life advantage it holds over the competition.
3. Display Quality
Both devices run 1080p IPS panels at 120Hz, which covers the basics well. The ROG Ally X screen measures 7 inches with strong brightness for indoor play and a glossy coating that handles direct sunlight about as well as any glossy panel does – which is not great. Color accuracy is good for a gaming device, though not reference-grade.
The Legion Go S has a slightly larger 8-inch display, which sounds minor until you are actually playing. That extra inch makes a real difference for text readability in RPGs or strategy games. Lenovo’s panel also carries an anti-glare treatment, which genuinely helps in portable use scenarios. Brightness levels are comparable, and the 120Hz performance is equally smooth on both.
Winner: Legion Go S – the larger, anti-glare screen is more practical for portable gaming outside of controlled environments.
4. Build Quality and Ergonomics
The Ally X feels dense in the hand – 678 grams, with a premium matte finish and a chassis that does not flex under pressure. The grip texture is well-designed, and the button placement follows a standard Xbox-style layout that feels natural immediately. Long sessions are comfortable, though some users with larger hands find the grips a touch shallow.
The Legion Go S weighs slightly less at around 640 grams depending on configuration, and Lenovo designed wider grips that accommodate a broader range of hand sizes. The build material feels slightly less premium than the Ally X’s chassis but holds up fine in daily use. One meaningful difference: the Legion Go S ships with a kickstand, which the Ally X lacks. For tabletop play or use at a desk, that kickstand is genuinely useful.
Winner: Draw – the Ally X wins on build material quality, the Legion Go S wins on ergonomic comfort and practicality features like the kickstand. Your hand size and use case determine which matters more.
5. Storage and Expandability
The ROG Ally X comes with a 1TB NVMe SSD as standard, which is the right call. PC gaming libraries are enormous, and 512GB fills up faster than you expect. Asus also includes a microSD slot for extra storage, though NVMe speeds are preferable for game installations.
The Legion Go S base models often start at 512GB depending on region and SKU, with 1TB options available at higher price points. It also includes microSD expansion. There is nothing fundamentally wrong with the Go S storage setup, but the Ally X giving you 1TB as a baseline without requiring an upgrade purchase is a real convenience advantage.
Winner: ROG Ally X – 1TB standard storage removes the immediate need for expansion.
6. Software and UI Experience
Both devices run Windows 11, which means both carry the same core frustration: Windows was not designed for a handheld form factor. Navigating the OS with a thumbstick is clunky in ways that SteamOS on the Steam Deck simply is not. Asus ships the Ally X with Armoury Crate SE, its overlay software for managing TDP, fan curves, and display settings. It works, and it has improved substantially since launch, but it still occasionally conflicts with game launchers and requires updates that arrive mid-session.
Lenovo ships the Legion Go S with Legion Space, its own launcher overlay. It is cleaner in layout than Armoury Crate and does a better job of surfacing your library in a controller-friendly format. Neither software solution is good enough to stop you from occasionally needing to navigate full Windows for driver updates or launcher installs. A version of the Legion Go S runs SteamOS natively, which changes this category entirely for buyers who are willing to operate outside the Windows ecosystem.
Winner: Legion Go S – Legion Space is the cleaner software experience, and the SteamOS option gives buyers a real alternative to Windows entirely.
7. Connectivity and Ports
The Ally X carries two USB-C ports, both supporting USB 3.2 Gen 2, with one also supporting DisplayPort and power delivery. This makes docking straightforward – you can connect to a monitor and charge simultaneously. There is a microSD slot and a 3.5mm audio jack. That is a clean, functional port selection without anything missing.
The Legion Go S keeps a similar layout, with USB-C for data and display output plus a microSD slot. Lenovo includes a USB-A port on some configurations, which is a small but practical addition for users who connect older peripherals directly without a dock. Neither device is particularly behind on connectivity for handheld form factors.
Winner: Tie – both cover the necessary bases for a portable PC gaming device.
8. Price-to-Performance Value
The ROG Ally X carries a higher price tag than the Legion Go S entry configurations. That premium is justified by the larger battery, the 1TB baseline storage, and the Z1 Extreme APU across all SKUs – there is no underpowered version of the Ally X to accidentally buy. What you see on the box is what you get.
The Legion Go S covers a broader price range because of its multiple chip configurations. The Z2 Go SKU is meaningfully cheaper and suits buyers who primarily play less demanding titles, indie games, or emulation. The Z1 Extreme version of the Go S competes directly with the Ally X on performance at a slightly lower cost in most markets. If you are budget-conscious and honest about your game library, the Legion Go S offers genuine flexibility that the Ally X does not.
The Ally X is the better device for buyers who want one machine with no compromises and are willing to pay for it. The Legion Go S is the better device for buyers who want options – in chip tier, in price, and in operating system. Those are meaningfully different value propositions depending on what actually matters to you.
Overall Winner: ROG Ally X – for outright performance and build quality. But the Legion Go S SteamOS variant is the stronger case for anyone tired of managing Windows on a handheld.
