I have been waiting three years for this. When the original Steam Deck OLED landed in late 2023, it was a refinement, not a revolution. Valve made the screen better, stretched the battery, and called it a generation. Fast forward to June 2026, and the Steam Deck OLED 2 has finally arrived with a real generational leap: the in-house Aerith APU on a 4nm process, an OLED panel that actually pushes 120Hz natively, and a redesigned chassis that shaves grams off the original. ASUS, predictably, did not sit still. The ROG Ally X 2026 refresh ships with an updated Ryzen Z2 Extreme, 32GB of LPDDR5X, and a slightly larger 80Wh battery that finally makes AMD's handheld competitive on long flights.
I have spent the last three weeks bouncing between these two devices on my couch, on a transatlantic flight, and on a couple of late trains. I ran Cyberpunk 2077 with path tracing, Baldur's Gate 3 across an entire act, and probably sixty hours of Elden Ring in handheld form. I also dragged out an original LCD Steam Deck for context. Here is how the two new contenders stack up, and which one I think actually deserves the $699 most of us are about to spend.
The state of handheld PC gaming in 2026
Handheld PC gaming is no longer a curiosity. Valve's lifetime Steam Deck install base crossed 22 million units in early 2026 according to their last investor call, and IDC pegged the broader handheld PC market at roughly 9.4 million units shipped in 2025. That is not Switch numbers, but it is firmly mainstream. The category has also matured: Lenovo is shipping a Legion Go refresh, MSI has a Claw revision, Razer is rumored to be entering the category, and Ayaneo is now on its sixth generation of boutique handhelds.
Two things changed in 2026. First, RDNA 4 APUs landed in mobile form factors with enough efficiency that 1080p native at 60fps is finally realistic in AAA games without heroic settings compromises. Second, Valve released Proton 11 with full DirectStorage pass-through, which means game load times are now genuinely console-grade rather than the half-second stutter we tolerated on the first Steam Deck. The category is no longer about whether you can play a demanding game on a handheld. It is about how well, for how long, and on what OS.
That maturity is exactly why this comparison matters. Both the Steam Deck OLED 2 and the ROG Ally X 2026 are excellent. They are also aimed at slightly different buyers, and the $100 price gap is real money.
Display, ergonomics, and build quality
The screen is the single biggest reason to consider upgrading. The Steam Deck OLED 2 keeps the 7.4-inch OLED size from the previous OLED revision but pushes refresh from 90Hz to 120Hz with HDR10+ support and a peak brightness of 1,100 nits in HDR highlights. The ROG Ally X 2026 ships with a slightly larger 7.9-inch IPS panel running at 144Hz with 500 nits typical brightness. In person, the OLED 2 wins on contrast and color saturation. Blacks are truly black, and that matters in games like Cyberpunk and Elden Ring where dark dungeons are half the experience. The Ally X wins on smoothness in competitive shooters and on raw pixel density because it is a hair sharper despite the larger size.
Ergonomics are where Valve's design heritage really shows. The Steam Deck OLED 2 is a full 80 grams lighter than the original Deck, weighing in at 588 grams. The grips are contoured, the thumbsticks have a tighter throw, and the trackpads remain the best on any handheld PC for anything that needs a cursor. The Ally X is heavier at 670 grams, but it is also more rectangular and slightly chunkier. After a two-hour session with Elden Ring on both, my hands clearly preferred the Deck. ASUS counters with detachable controllers and a kickstand that the Deck still does not have.
Build quality on both is excellent. The Deck's plastic shell feels a touch cheaper in the hand, but it is more resistant to dings and easier to grip. The Ally X's metal-reinforced shell is sturdier but gets noticeably hot near the top vents under sustained load.
Performance: AAA titles at 1080p handheld
Let me get the raw numbers out of the way. Both handhelds run at 1080p in handheld mode. I tested three games with a mix of presets: Cyberpunk 2077 with the Path Tracing preset dropped to Medium, Baldur's Gate 3 on Ultra, and Elden Ring on max settings with no frame cap.
| Device | CPU/GPU | RAM | Display | Battery | Weight | Price |
|---|---|---|---|---|---|---|
| Steam Deck OLED 2 | Aerith APU (Zen 5 + RDNA 3.5, 16 CUs) | 16GB LPDDR5X | 7.4" OLED 120Hz HDR | 50Wh | 588g | $699 |
| ROG Ally X 2026 | Ryzen Z2 Extreme (Zen 5 + RDNA 4, 12 CUs) | 32GB LPDDR5X | 7.9" IPS 144Hz | 80Wh | 670g | $799 |
| Original Steam Deck LCD | Van Gogh APU (Zen 2 + RDNA 2, 8 CUs) | 16GB LPDDR5 | 7" IPS 60Hz | 40Wh | 669g | $399 |
On Cyberpunk 2077 at Medium with FSR 3.1 Frame Gen enabled, the Deck OLED 2 held a steady 58 to 62fps in Night City with path tracing partially on. The Ally X 2026, thanks to RDNA 4, ran the same preset at 65 to 72fps and occasionally touched 80 in quieter outdoor scenes. That is a meaningful gap on paper. In practice, both felt smooth and looked fantastic.
Baldur's Gate 3 is the more interesting test because it is CPU-bound in turn-based combat and has very different behavior in exploration. The Deck's Aerith APU has two extra CPU cores and it showed: act-three load times were roughly 18 percent faster, and big dialogue scenes stuttered less on the Deck than on the Ally. That surprised me. RDNA 4 brute force does not always win when a game leans on the CPU.
Elden Ring, locked 60fps on both, ran identically in framerate. The Ally X gets noticeably louder because its fan curve is more aggressive, but neither throttled in my three-hour sessions.
Battery life: the truth after three weeks
This is where marketing copy and reality diverge. Both companies claim big numbers. ASUS claims up to 5.5 hours of light use. Valve's official Steam Deck OLED 2 spec sheet lists "3-12 hours" depending on workload, which is honest and infuriating in equal measure.
In real gaming, draining from 100 to 10 percent with screen brightness at 50 percent and Wi-Fi on:
- Steam Deck OLED 2: 2 hours 50 minutes of Cyberpunk, 3 hours 40 minutes of Baldur's Gate 3, 3 hours 15 minutes of Elden Ring.
- ROG Ally X 2026: 3 hours 10 minutes of Cyberpunk, 3 hours 55 minutes of Baldur's Gate 3, 3 hours 5 minutes of Elden Ring.
The Ally X's bigger 80Wh battery roughly cancels out its higher power draw, which is the actual story here. The Deck's lower wattage is offset by its smaller battery. In light use (indie games, emulators, 2D stuff) the Deck pulls ahead because the OLED panel's true black in dark scenes genuinely draws less power. I got about 7 hours 20 minutes of Hades II on the Deck versus 6 hours 10 on the Ally.
Neither device is going to replace a Switch on a long flight. Bring a battery bank.
SteamOS vs Windows 11 — the software war
This is the section I have the most opinions on. The Steam Deck OLED 2 ships with SteamOS 3.6, which is built on Arch Linux with Proton as its compatibility layer. Out of the box, the experience is frictionless. You sign in, your library appears, you click a game, and it usually just works. Suspend and resume is instant. The UI is built for a handheld first. Big Picture mode has been polished to a mirror shine.
The Ally X 2026 ships with Windows 11 Home, plus ASUS's Armoury Crate SE 2.0 software. Windows is Windows. Drivers update themselves, sometimes mid-game. Anti-cheat compatibility is more or less guaranteed. Game Pass integration is excellent. But the UI was designed for a 27-inch monitor and a mouse, not for a 7.9-inch touchscreen with a gamepad. ASUS has done real work to make Armoury Crate usable in handheld mode, and there is a controller-friendly overlay, but it is still Windows. Suspend and resume takes about four seconds, which feels glacial after a week on the Deck.
If you only play single-player games from your Steam library and do not care about Game Pass, SteamOS is the better experience in 2026 by a wide margin. If you live in the Epic ecosystem, play Game Pass day-one, or need specific Windows-only tools, the Ally X is your device and you will simply live with the rougher handheld UX.
Game compatibility and anti-cheat reality check
I tested seventeen games across both devices. Sixteen ran identically well. The one outlier was Arc Raiders, which still ships with Easy Anti-Cheat in a configuration that does not play nicely with Proton on the Linux side. Steam Deck OLED 2 users in 2026 have two options: drop into desktop mode and use the experimental Proton-GE branch (which works about 80 percent of the time), or simply skip it. On the Ally X, Arc Raiders installed and ran from Game Pass in roughly forty seconds with zero fuss.
For everyone who plays Destiny 2, Valorant, Fortnite, or any other EAC-protected competitive game, the answer is the Ally X. For everyone playing single-player or co-op titles, the Deck handles 100 percent of my library including Helldivers 2, Baldur's Gate 3, and Monster Hunter Wilds. The compatibility gap is shrinking every Proton update, but it has not closed.
Which one should you buy?
After three weeks, I have landed on a fairly clean recommendation. If your library is mostly Steam, you value suspend and resume, you want the deepest blacks OLED can deliver, and you do not want to think about drivers, buy the Steam Deck OLED 2 at $699. The 80-gram weight reduction from the original Deck is bigger than it sounds. The new Aerith APU is a real upgrade in CPU-bound games, and SteamOS 3.6 is the best handheld UI in the category.
If you have a Game Pass subscription, depend on Windows anti-cheat, or want the absolute highest framerates in demanding shooters, the ROG Ally X 2026 at $799 is worth the premium. The extra RAM is forward-looking, the 144Hz display is genuinely smoother, and ASUS's build quality is excellent. You will just need to live with Windows.
I am keeping the Steam Deck OLED 2. It is not the fastest handheld PC of 2026, but it is the one I keep reaching for. That is the only review metric that actually matters for a device you hold in your hands for hours at a time.