ROG Ally X vs Steam Deck OLED: Which to Buy in 2026

Nerdspec has not tested either handheld. This comparison works from the makers' own spec pages, from prices we read at Valve's store and the ASUS US store on September 30, 2026, and from published tests we name as we quote them. Store links here may earn Nerdspec a commission, and that did not set the order.

ROG Ally X vs Steam Deck OLED: the short answer

Three buyers, three answers.

• You mostly play Steam games and want it to just work. Steam Deck OLED, 512GB, $789.00 from Valve on September 30, 2026. Best screen of the three, lowest price of the three, and nothing to configure.
• Your library lives in Game Pass, or you play shooters with kernel anti-cheat. ROG Xbox Ally X (2025), $999.99 from the ASUS US store on September 30, 2026. It runs Windows 11 Home, so it runs the Windows build of anything.
• You want the 2024 ROG Ally X at $799.99. You are shopping for a product ASUS no longer has in stock. Treat any listing you find as end-of-line retail stock and check the price against the two above before you commit.

Two different handhelds are called Ally X, and the cheaper one is out of stock

This is the part that ruins most comparisons of the ROG Ally X vs Steam Deck OLED, and it is why this page exists. The 2024 machine and the 2025 machine share a name and share almost nothing that matters. The longest comparison on page one of Google's US results for this query, which we read on September 30, 2026, covers only the 2025 machine: no model code, no Ryzen Z1 Extreme, no 678 g, and no mention that ASUS marks the 2024 model out of stock.

The ROG Ally X (2024, RC72LA) runs an AMD Ryzen Z1 Extreme: Zen 4, eight cores, sixteen threads, up to 5.10GHz, with Radeon RDNA 3 graphics rated at 12 compute units and up to 8.6 TFLOPS. It has 24GB of LPDDR5 and weighs 678 g. The ASUS US store lists it at $799.99 and marks it out of stock on September 30, 2026.

The ROG Xbox Ally X (2025, RC73XA) runs an AMD Ryzen AI Z2 Extreme: eight cores, sixteen threads, up to 5.0GHz, with an XDNA NPU rated up to 50 TOPS. It has 24GB of LPDDR5X and weighs 715 g. The same store lists it at $999.99 and marks it in stock on the same day. Those 37 extra grams and that NPU belong to the 2025 model only. Any comparison that puts a Z2 Extreme figure next to a 678 g weight has blended the two.

Three lines on any listing tell you which machine you are looking at.

• The model code. RC72LA is the 2024 ROG Ally X. RC73XA is the 2025 ROG Xbox Ally X.
• The processor. Ryzen Z1 Extreme means 2024. Ryzen AI Z2 Extreme means 2025. A Ryzen Z2 A means neither, because that is the cheaper non-X ROG Xbox Ally.
• The weight. 678 g is the 2024 model and 715 g the 2025 one. There is no Ally X that weighs anything else.

Retailers blend them anyway. Here are three listings we read on Amazon.com on September 30, 2026, worst first.

• ASIN B0GD17BV63, $1,139. Its title opens "ASUS ROG Ally X" and then specifies a "Ryzen AI Z2 Extreme", which is the 2025 chip, so it sells 2025 hardware under the 2024 name. It wears an Amazon's Choice badge while doing it, and it is a Japan version import on top.
• ASIN B0GHYCFPSV, $1,138. A ROG Xbox Ally X (2025), also labelled a Japan version import, at about $138 over the $999.99 ASUS asks for the US model.
• ASIN B0HJ1SX3CH, roughly $930 to $980. Not an X at all. It is the ROG Xbox Ally, the cheaper model with a Ryzen Z2 A and 16GB of memory. The asking price moved across the listings carrying that same title on the day we read them, so treat any single figure for it as a snapshot.

Read the processor line before you read the price. Every number further down this page is labelled with the model it belongs to for the same reason.

What each model actually costs in the US on September 30, 2026

Valve raised Steam Deck OLED prices on May 27, 2026, citing memory and storage costs. The 512GB model went from $549 to $789 and the 1TB from $649 to $949. Any comparison still quoting $549 is describing a machine Valve stopped selling at that price four months ago, and the well-worn line that the Deck undercuts the ROG Ally X (2024) by $250 went with it.

Here is what the two brand stores said on September 30, 2026. Valve's own Steam store lists the Steam Deck OLED at $789.00 for 512GB and $949.00 for 1TB, both showing inventory available. The ASUS US store lists the ROG Xbox Ally X (2025) at $999.99 and marks it in stock. The same store lists the ROG Ally X (2024) at $799.99 and marks it out of stock.

The arithmetic only means anything once you have fixed which Ally you are pricing, so do it in that order. The real 2026 gap is not $250. Against the Ally you can buy, the 512GB Deck saves you $210.99 and the 1TB Deck saves you $50.99. Against the 2024 Ally X at its list price, the 512GB Deck is $10.99 cheaper, which is close enough to call a tie, except that one of the two is in stock.

The comparison everyone writes is $799.99 against $549. The comparison you can actually make today is $999.99 against $789.00, and the cheap Ally is not on the shelf.

One trap to name, because it costs real money. Valve does not sell the Steam Deck through Amazon in the US, so every Amazon listing is a marketplace reseller, and two of them wear an Amazon's Choice badge. On September 30, 2026 the 512GB Deck was $839 on Amazon.com against $789.00 at Valve, and the 1TB was $1,049.99 against $949.00. That is a $50 and a $101 premium for the same hardware. Buy the Deck from Valve.

Specs side by side: both Ally models and the Steam Deck OLED

The spec sheet below carries all three machines, because the two Ally models are not interchangeable. Every row comes from the maker's own page: the ASUS RC72LA and RC73XA spec pages and Valve's Steam Deck OLED tech specs, all read on September 30, 2026.

Three differences do the work. Both Ally models carry an 80Wh battery against the Deck's 50Wh. Both Ally models use a 7-inch 1920 x 1080 IPS-level LCD at 120Hz and 500 nits, while the Deck uses a 7.4-inch 1280 x 800 HDR OLED at up to 90Hz, 1,000 nits peak in HDR. And both Ally models ship Windows 11 Home against the Deck's SteamOS 3. Almost everything else, from Wi-Fi 6E to the 1TB PCIe 4.0 drive, lines up.

Performance: Z1 Extreme, Z2 Extreme and the Deck's older APU

Valve's chip is the oldest part here and it shows on paper. The Steam Deck OLED uses a 6nm AMD APU with four Zen 2 cores, eight RDNA 2 compute units at 1.6GHz and 1.6 TFLOPS, inside a 4 to 15W APU power envelope. The ROG Ally X (2024) has twice the cores, a newer graphics architecture and a 9 to 30W range to spend.

NoobFeed ran both at a matched 15W limit at 720p in its ROG Ally X versus Steam Deck OLED comparison, which is the fairest read available on the 2024 model. Every figure below is the ROG Ally X (2024) first, the Steam Deck OLED second.

• Shadow of the Tomb Raider, Medium: 57 fps vs 45 fps
• Horizon Zero Dawn, FSR on Balanced: 79 fps vs 60 fps
• Red Dead Redemption 2, Low: 53 fps vs 51 fps
• Cyberpunk 2077, Steam Deck preset: 46 fps vs 41 fps
• Clair Obscur: Expedition 33: 38 fps vs under 30 fps

Read that honestly. At the same power, the 2024 Ally X wins every test, and in four of the five the win is between two and nineteen frames. Clair Obscur is the outlier because it is the newest game of the five, built long after the Deck's hardware froze, and that is where the gap turns into playable against not playable. Give the 2024 model its full 30W and the margin widens further, at a cost the battery section covers.

For the 2025 ROG Xbox Ally X we found no published Z2 Extreme against Steam Deck OLED test we could read in full, so we are not going to put a number on it. What ASUS publishes is a slightly lower peak clock (5.0GHz against 5.10GHz), faster LPDDR5X memory and the 50 TOPS NPU, which does nothing for frame rates in current games.

Battery life: 80Wh vs 50Wh in real play

ROG Ally X battery life is the strongest argument for the Windows side, and it is won on capacity alone, not on efficiency. In NoobFeed's light-game run the ROG Ally X (2024) drew more power than the Deck, not less, and the longer runtime came from the bigger pack carrying that heavier draw for longer.

Here are both runs from the same NoobFeed comparison, at 720p with 50% brightness, the ROG Ally X (2024) first and the Steam Deck OLED second.

• Hades 2, High, 60Hz cap: close to 9 hours 45 minutes at 8.2W vs roughly 6 hours 50 minutes at 7.3W
• Cyberpunk 2077, Steam Deck preset: about 3 hours 35 minutes on the ROG Ally X (2024) at 22.1W vs about 2 hours 10 minutes on the Deck at 23W

Divide those out and the 80Wh against 50Wh headline overstates the light-game case rather than understating it. The packs differ by 1.6 times. In Hades 2 the runtimes differ by about 1.43 times, because at that setting the Ally is the thirstier of the two at 8.2W against 7.3W. Only under load does the gap reach the capacity ratio, and the Cyberpunk runs differ by about 1.65 times. Buy the 80Wh pack for the hours it holds, not for a frugal chip.

HotHardware's review of the ROG Ally X (2024) puts a floor under that. Its worst-case gaming rundown ended at 101 minutes, more than double what the original 40Wh ROG Ally managed, and Elden Ring on the Turbo profile ran past two hours.

The Deck's own numbers are less dramatic but more consistent. Valve claims 3 to 12 hours of gameplay from the 50Wh pack. GamingOnLinux measured the OLED at about 5 hours in DiRT Rally on Medium at 60fps with 50% brightness and volume, and about 2 hours 30 minutes in Cyberpunk 2077 locked to 30fps, both up by roughly two thirds on the LCD Deck it replaced. The same review clocked a 10% to full charge in sleep at 1 hour 33 minutes.

Verdict on this axis: the 2024 ROG Ally X wins on endurance, by hours in light games and by over an hour in heavy ones. The 2025 ROG Xbox Ally X carries the same 80Wh pack and the same 65W charger, so the capacity advantage over the Deck holds, but we have no measured runtime for it to quote.

Display: 1080p 120Hz LCD vs 800p 90Hz HDR OLED

This one does not go the way the resolution numbers suggest. Both Ally models use a 7-inch 1920 x 1080 IPS-level panel at 120Hz, 500 nits, with FreeSync Premium and Gorilla Glass Victus. The Steam Deck OLED uses a 7.4-inch 1280 x 800 HDR OLED at up to 90Hz, rated by Valve at 1,000 nits peak in HDR and 600 nits in SDR, with a contrast ratio above 1,000,000 to 1 and 110% of P3.

On a 7-inch screen, 1080p is a fine thing to have and a hard thing to drive: every test above shows what happens when you ask this class of chip for native 1080p, which is why most of those benchmarks run at 720p. The Deck's panel is bigger, brighter (600 nits in SDR against the Ally's 500, and 1,000 nits peak in HDR) and has true black. If image quality decides it for you, the Deck wins. If you dock to a 1080p monitor or want 120Hz in older and lighter games, the Ally wins.

Software: Windows 11 vs SteamOS, Game Pass and anti-cheat

Both Ally models run Windows 11 Home. The Steam Deck OLED runs SteamOS 3, which is Arch-based, and that single difference decides more purchases than any frame rate here.

Windows runs everything, including the PC Game Pass client and competitive shooters whose anti-cheat refuses to run under Proton. Valve's own compatibility scale has a tier for this: a game is marked Unsupported when, in Valve's words, it "does not function on this device due to incompatibility with Proton or specific hardware components." ASUS bundles a Game Pass trial with both models, three months of Game Pass for PC with the 2024 RC72LA and two months of Game Pass Premium with the 2025 RC73XA.

Game Pass on a Steam Deck is the reverse problem. There is no PC Game Pass client for SteamOS, so you stream instead: Xbox Cloud Gaming in a browser, with a Game Pass subscription and a live connection. It works. It is not the same as installing the game.

The wall between the two is lower than it was, and here the two Allys split again. Valve's own SteamOS Installation and Repair page, read on September 30, 2026, sorts hardware into two lists. "Powered by SteamOS" holds only the Steam Deck, Steam Machine, Steam Frame and Legion Go S. "Beta SteamOS Support" is where Valve names the ASUS ROG Ally X, alongside the ROG Ally, the Lenovo Legion Go and other AMD powered handhelds. Neither list mentions any Xbox Ally.

Separately, Valve shipped SteamOS 3.8 on June 18, 2026, and its release notes add "controller, TDP control, and speaker audio support for the ASUS ROG Xbox Ally series," alongside fixes that name the ROG Ally by model, including fingerprint-reader power draw when the machine is off. So there is a route to SteamOS on both machines, but Valve's own word for the ROG Ally X is beta, not supported, and anyone telling you the 2025 Xbox Ally is officially supported is reading more into a release note than Valve puts on its own install page. Either way it is a wipe-and-reinstall job, and it trades away the Game Pass client you paid the Windows tax for.

Comfort and controls: the Deck is the lightest and the only one with trackpads

The Steam Deck OLED is the lightest of the three at about 640 g, against 678 g for the ROG Ally X (2024) and 715 g for the ROG Xbox Ally X (2025). It is also the widest at 29.8 cm, but only just: the 2024 model is 28.0 cm and the 2025 model is 29.0 cm, so the width gap people remember from the first Ally has mostly closed. Depth runs the other way. The 2025 model is the bulkiest of the three at 5.09 cm at its deepest, against 4.9 cm for the Deck and 3.69 cm for the 2024 model. What the Deck spends its width on is control surface: two 32.5mm haptic trackpads and four rear grip buttons.

Those trackpads are not a rounding error. They are how you play strategy games, point-and-click adventures and anything with a mouse cursor without docking. Neither Ally has them. The Ally models answer with a 65W charger against the Deck's 45W, and with USB4 and Thunderbolt 4 compliance on one port, which makes them the better machines to hang an external GPU or a multi-monitor dock off.

Which one should you buy?

Fix which Ally you mean first. The prices only decide it after that.

Most people should buy the Valve Steam Deck OLED 512GB at $789.00 from Steam, checked September 30, 2026. It is the cheapest of the three, it has the best screen, it needs no setup, and its trackpads cover game genres the Ally cannot without a desk. Its chip is the slowest here and the NoobFeed tests show that, but at 15W it stayed within five frames of the 2024 Ally X in two of the five games NoobFeed ran. If you want more room, the 1TB model is $949.00 from Valve on the same date.

Buy the ASUS ROG Xbox Ally X (2025) at $999.99 from the ASUS US store, checked September 30, 2026, if you need Windows. Game Pass installed locally, kernel anti-cheat shooters, launchers outside Steam, an 80Wh battery and a 120Hz 1080p panel. You pay $210.99 over the 512GB Deck for that, and you carry 75 g more.

The 2024 ROG Ally X at $799.99 would have been the value answer, and on the numbers it still is the better-documented machine. ASUS's own US store has it out of stock, so it is not an answer any more. If a retailer still has one near list price, it remains a good handheld. Do not pay 2025 money for it.