Lenovo Legion Go S vs. ASUS ROG Ally X: Which Next-Gen Handheld Earns a Spot in Your Backpack?

You're standing at the edge of a purchase, handheld gaming device in your cart, and a question echoing in your head: which one, really? The market for Windows-powered gaming handhelds is maturing rapidly, and two key contenders are stepping up to refine their vision: the Lenovo Legion Go S and the ASUS ROG Ally X.

This isn't a piece designed to tell you which one I'd pick. That's not how we do things here. Instead, my goal is to lay out every meaningful distinction, every shared strength, and every genuine trade-off, so that when you're done reading, the answer for your specific needs is undeniably clear. Let's make that decision an easy one.

The 30-second summary

The ASUS ROG Ally X refines an already popular formula, focusing on significantly enhanced battery life, more RAM, and improved ergonomics within its compact 7-inch form factor, aiming for extended play sessions and greater component flexibility. The Lenovo Legion Go S, on the other hand, is expected to iterate on its predecessor's unique detachable controllers and larger display, likely targeting a more portable design while retaining its distinctive versatility. The core question for buyers here comes down to whether a larger, more modular screen experience or a more traditional, highly refined compact design with maximum endurance aligns better with their gaming habits.

Specs at a glance

Design & build

When we talk about handhelds, how they feel in your hands is almost as critical as what's under the hood. The ASUS ROG Ally X takes the established design of its predecessor and refines it. ASUS has opted for an all-black chassis, which is a departure from the original's white, and has focused on internal and ergonomic improvements. The device is slightly heavier than the original Ally, coming in at 678 grams, a consequence of its larger battery. However, ASUS has redesigned the grips, buttons, and joysticks to offer a more comfortable and precise experience, addressing feedback from the original model. The D-pad and joysticks, in particular, are expected to be more robust and responsive, which is a welcome change for fighting games and platformers.

Lenovo's Legion Go S, on the other hand, is expected to build upon its predecessor's unique approach. The original Legion Go was notable for its larger display and detachable controllers, allowing for a more versatile use case, including a 'FPS mode' where one controller acts as a vertical mouse. The 'S' in Legion Go S suggests a move towards a slimmer and potentially lighter design, aiming to address the original's considerable weight (854g with controllers) and bulk. While specific details on the Go S's weight are not yet confirmed, it's reasonable to expect it to land closer to the Ally X's weight class, or perhaps even lighter, especially if the screen size is slightly reduced from the original 8.8 inches. The core design philosophy of detachable controllers and a built-in kickstand, which allows the device to stand freely on a surface, is expected to remain, offering a distinct advantage for tabletop gaming or media consumption. This means the Go S will likely continue to offer a unique blend of handheld and mini-tablet functionality that the Ally X does not.

For those who prioritize a traditional, highly integrated handheld feel with refined controls, the ROG Ally X leans in that direction. If you value the flexibility of detachable controllers, a potential kickstand, and the option for a larger screen experience, the Legion Go S is likely to be the more suitable choice.

Display

The display is your window into the game world, and these devices offer distinct philosophies. The ASUS ROG Ally X retains the excellent 7-inch Full HD (1920x1080) IPS display from its predecessor. This screen boasts a 120Hz refresh rate, FreeSync Premium support for variable refresh rates (VRR), and a peak brightness of 500 nits. For a 7-inch panel, 1080p is a sharp resolution, ensuring crisp visuals without overly taxing the GPU, which is a sensible balance for a handheld. The VRR technology is a significant advantage, eliminating screen tearing and stuttering by synchronizing the display's refresh rate with the game's frame rate, leading to a smoother experience, especially in games where frame rates fluctuate.

The Lenovo Legion Go S is expected to continue its lineage of offering a larger display. While the original Legion Go featured a substantial 8.8-inch QHD+ (2560x1600) display with a 144Hz refresh rate, the 'S' model might see a slight reduction in size for improved portability, perhaps settling in the 8.3-inch range. Even at a slightly smaller size, it would still offer significantly more screen real estate than the Ally X. The higher resolution of the Legion Go S's expected display would provide a denser pixel count, resulting in incredibly sharp images, though this also means the GPU will have to work harder to render games at native resolution, potentially leading to lower frame rates in demanding titles unless resolution scaling is employed. Like the Ally X, it's expected to feature VRR, which is crucial for a premium gaming experience.

If your priority is maximum pixel density and screen size for an immersive visual experience, even if it means potentially scaling down resolution in some games, the Legion Go S leans towards that preference. If you prefer a more compact screen that hits a sweet spot for resolution and frame rate performance without significant scaling, the ROG Ally X offers that focused experience.

Performance

Under the hood, both of these devices are expected to leverage AMD's Z1 Extreme processor, or a very close variant of it. This chip, featuring RDNA 3 graphics, has proven its capability in delivering respectable gaming performance in a handheld form factor. It's capable of running a wide array of modern AAA titles at playable frame rates, often requiring resolution scaling or reduced graphical settings for the most demanding games. For indie titles and older AAA games, it provides an excellent experience.

A key differentiator in performance will be the RAM. The ASUS ROG Ally X comes with a generous 24GB of LPDDR5X RAM clocked at 7500MHz. This is a substantial upgrade from the original Ally's 16GB and provides a significant headroom for both the operating system and games, especially those that are memory-intensive or benefit from ample VRAM (which is dynamically allocated from system RAM on these APUs). More RAM can lead to smoother multitasking, fewer stutters, and potentially higher minimum frame rates in certain scenarios.

For the Lenovo Legion Go S, while specific RAM configurations are not confirmed, it's expected to either retain the 16GB of its predecessor or upgrade to 24GB to match the Ally X. If it remains at 16GB, the Ally X would hold a clear advantage in memory capacity. The larger, higher-resolution screen on the Legion Go S also means the Z1 Extreme will be pushing more pixels, which could impact performance if games are run at native resolution. However, both devices run Windows 11, allowing users to adjust settings and resolutions to find a balance between visual fidelity and frame rate.

If having the most memory headroom for demanding games and future-proofing is a top priority, the ROG Ally X with its 24GB RAM provides a clear advantage. If raw processing power for gaming is genuinely close and other features like screen size or modularity are more important, then the performance difference here might be a wash, depending on the Go S's final RAM configuration.

Battery & charging

Battery life is a critical concern for any portable gaming device. The ASUS ROG Ally X makes a significant leap here, featuring an 80Wh battery. This is a substantial increase from the original Ally's 40Wh and is one of the largest batteries found in a mainstream handheld gaming PC. This larger capacity directly translates to longer gaming sessions, allowing users to play for several hours on a single charge, even with demanding titles. Charging is handled via a 65W USB-C Power Delivery (PD) charger, which is standard for these types of devices and allows for relatively quick top-ups.

Lenovo's Legion Go S is expected to improve upon the original Legion Go's 49.2Wh battery. While specific capacity for the 'S' model is not yet confirmed, it's reasonable to expect it to land in the 60Wh+ range to remain competitive. Even with an improvement, it would likely still be smaller than the Ally X's 80Wh unit. The original Legion Go's larger, higher-resolution screen and detachable controllers could also contribute to higher power consumption, depending on usage. Like the Ally X, the Legion Go S is expected to support 65W USB-C PD charging, offering similar charging speeds.

For those whose primary concern is maximizing play time away from a power outlet, the ROG Ally X's 80Wh battery offers a significant advantage. If you anticipate having access to charging regularly or prioritize other features over absolute maximum endurance, the Legion Go S's expected battery improvements should still provide a solid experience.

Software & longevity

Both the Legion Go S and the ROG Ally X run on Windows 11 Home, which is both a strength and a potential complexity. The advantage of Windows is unparalleled game compatibility; anything that runs on a desktop PC will theoretically run on these handhelds, including launchers like Steam, Epic Games Store, GOG, Xbox Game Pass, and more. This open ecosystem provides maximum flexibility for your game library.

However, Windows 11 isn't designed for a handheld form factor. To mitigate this, both manufacturers implement their own custom overlay software. ASUS utilizes Armoury Crate SE, which acts as a centralized hub for game launching, performance profiles, controller mapping, and system settings. ASUS has continuously refined Armoury Crate SE, aiming to make it more intuitive and stable. Lenovo provides Legion Space, which serves a similar purpose for the Legion Go line. Both overlays aim to streamline the handheld gaming experience, but they are essentially a layer on top of Windows, which can sometimes lead to minor quirks or require occasional drops back to the desktop interface for specific tasks.

Regarding longevity, software updates are crucial. Both ASUS and Lenovo provide firmware updates, driver updates, and software enhancements for their respective devices. The lifespan of a Windows-based gaming handheld largely depends on component durability and continued driver support from AMD and the device manufacturer. While neither company has provided explicit long-term software support windows like some mobile phone manufacturers, the nature of Windows means that as long as AMD continues to provide GPU drivers, the devices will remain functional and capable of running new games, albeit with diminishing performance over many years as hardware requirements increase. The robust upgradeability of the Ally X's M.2 2280 slot and potentially the Go S's storage slot also contributes to their long-term usability, allowing users to expand storage as needed.

If you value a slightly more mature and refined software overlay that has seen consistent updates, Armoury Crate SE on the ROG Ally X might appeal. If you're comfortable with the inherent flexibility and occasional desktop interactions of Windows on a handheld, and value the potential for unique software features tied to detachable controllers in Legion Space, the Legion Go S offers that alternative.

Price & value

Pricing for these premium handhelds places them squarely in a similar bracket, though specific configurations will lead to variations. The ASUS ROG Ally X is expected to launch at around $799-$899, likely for a 1TB storage configuration with 24GB of RAM. Given its significant battery upgrade, increased RAM, and M.2 2280 slot, it offers a compelling package for the price, particularly for users prioritizing endurance and internal upgradeability. The value proposition here is in the comprehensive refinement of an existing successful product, addressing key areas of feedback without a dramatic increase in price.

For the Lenovo Legion Go S, while pricing is not yet confirmed, it's expected to sit in a similar range, likely starting around $700-$850 depending on its base storage and RAM configuration. The value of the Legion Go S will hinge on its unique features: the larger display and the detachable controllers. If these features align with your specific use cases – perhaps you enjoy tabletop gaming with the kickstand, or you really want that expansive screen – then its value proposition is strong. However, if the 'S' iteration doesn't match the Ally X's battery or RAM upgrades, its overall value would be weighted differently against its unique form factor.

If your definition of value centers on a highly refined, long-lasting, and internally upgradeable compact handheld experience, the ROG Ally X presents a strong case. If value for you is tied to a more versatile form factor with a larger screen and unique input options, the Legion Go S will likely offer that distinct appeal, assuming its pricing is competitive for its feature set.

Which one fits you

• For the marathon gamer: If you need to game for as long as possible away from a wall outlet, the ROG Ally X with its 80Wh battery is designed for extended endurance.
• For the big-screen enthusiast: If an immersive, expansive visual experience is paramount, the Legion Go S's expected larger display (likely 8.3-8.8 inches) leans towards that preference.
• For those who value modularity: If you appreciate the flexibility of detachable controllers for different play styles, like tabletop gaming or FPS mode, the Legion Go S maintains that unique advantage.
• For the component tinkerer: If you plan on upgrading your internal storage with readily available, larger M.2 2280 SSDs, the ROG Ally X offers out-of-the-box compatibility for that standard.
• For the refined traditionalist: If you prefer a highly polished, integrated handheld experience with improved ergonomics and a compact form factor, the ROG Ally X builds upon that foundation.
• For the memory-intensive gamer: If you play a lot of demanding, memory-hungry titles or dabble in multitasking, the ROG Ally X's confirmed 24GB of LPDDR5X RAM offers significant headroom.

The bottom line

Ultimately, both the Lenovo Legion Go S and the ASUS ROG Ally X represent compelling advancements in the Windows handheld gaming space. Neither is objectively 'better' across the board; they simply cater to different sets of priorities. The decision truly boils down to a fundamental trade-off axis: do you prioritize a highly refined, endurance-focused, and internally upgradeable compact handheld experience, or do you lean towards a more versatile device offering a larger screen and unique, modular control options? Both are excellent devices, but one is likely a more natural fit for how and where you choose to game.