Best Handheld Gaming PCs 2024: Steam Deck OLED vs. ROG Ally X

The handheld gaming market has exploded in 2024. It is no longer just about the Nintendo Switch. Serious gamers now have powerful options that bring PC-quality gaming to a portable form factor. If you are looking to buy a handheld this year, your decision likely comes down to two heavyweights: the polished Steam Deck OLED from Valve and the high-performance ROG Ally X from ASUS.

The Core Differences at a Glance

Before looking at specific benchmarks, it is helpful to understand the philosophy behind these two devices. They target slightly different types of gamers.

Valve Steam Deck OLED:

  • Starting Price: $549 (512GB model)
  • Operating System: SteamOS (Linux-based)
  • Best For: Console-like simplicity, indie games, and verified Steam library titles.

ASUS ROG Ally X:

  • Price: $799
  • Operating System: Windows 11 Home
  • Best For: High-performance AAA gaming, Xbox Game Pass users, and playing multiplayer games with anti-cheat software.

Battery Life: The New King Arrives

One of the biggest complaints regarding the original ROG Ally was its battery life. ASUS listened to user feedback and made massive changes with the 2024 ROG Ally X.

The ROG Ally X features a massive 80Wh battery. This is double the size of the original Ally and significantly larger than the Steam Deck OLED’s 50Wh battery.

In real-world testing, this hardware change shifts the dynamic completely:

  • Heavy AAA Gaming (e.g., Cyberpunk 2077): The ROG Ally X can push between 2 to 3 hours of gameplay on performance settings. The Steam Deck OLED usually manages around 1.5 to 2 hours in similar demanding scenarios.
  • Low-Power Indie Gaming (e.g., Dead Cells): The Steam Deck OLED remains incredibly efficient at low wattages (TDP). It can last over 6 to 7 hours on lighter titles. However, the sheer size of the Ally X battery means it now competes closely here, often matching or exceeding the Deck in longevity simply by brute force of capacity.

If your primary concern is playing graphically intense games away from a power outlet, the ROG Ally X is the superior choice for 2024.

Display Quality: OLED vs. VRR

This is the most subjective part of the comparison. You have to choose between perfect colors or smoother motion.

The Steam Deck OLED utilizes a 7.4-inch HDR OLED panel running at 90Hz. The visual impact is immediate. The infinite contrast ratio makes blacks look truly black, which is stunning in atmospheric games like Elden Ring or Hades. The colors pop in a way standard LCD screens cannot match.

The ROG Ally X uses a 7-inch IPS LCD screen at 1080p. While it lacks the vibrant colors of OLED, it has a secret weapon: Variable Refresh Rate (VRR). The screen can adjust its refresh rate between 48Hz and 120Hz to match the game’s frame rate. This eliminates screen tearing and makes gameplay feel smooth even if the frame rate drops. Since handhelds often fluctuate between 45 and 60 FPS, VRR makes the gaming experience feel much more fluid on the Ally X.

Performance and Internals

Under the hood, the ROG Ally X is a significantly more powerful machine. It runs on the AMD Ryzen Z1 Extreme processor. When plugged in or running in “Turbo” mode (25W-30W), it can generate nearly double the frame rates of the Steam Deck in modern titles.

Crucially, ASUS upgraded the RAM in the Ally X to 24GB of LPDDR5X. This is a major advantage over the Steam Deck’s 16GB. Modern games often eat up system memory, leaving little for the graphics processor (GPU). With 24GB, the Ally X can allocate more memory to graphics, resulting in fewer stutters in demanding games like Returnal or Horizon Forbidden West.

The Steam Deck OLED uses a custom “Sephiroth” APU. It is optimized for efficiency rather than raw power. It targets 800p resolution at 30 to 60 FPS. It performs admirably for its price point but cannot keep up with the Z1 Extreme in raw computations.

Game Compatibility and Software

This section is vital for your purchasing decision. The hardware is only as good as the games it can run.

The Steam Deck Experience

The Steam Deck runs SteamOS. It is a console-like interface that is easy to navigate with a controller.

  • Pros: Features “Suspend/Resume” functionality that works perfectly. It puts the game to sleep instantly, just like a Switch.
  • Cons: It relies on a compatibility layer called Proton. While thousands of games are “Steam Deck Verified,” popular multiplayer games with anti-cheat software often do not work. You cannot easily play Fortnite, Call of Duty, or Destiny 2 on SteamOS without installing Windows, which is a complicated process.

The ROG Ally X Experience

The Ally X is literally a Windows 11 laptop with controllers attached.

  • Pros: It runs everything. If it works on a PC, it works here. This includes Xbox Game Pass, the Epic Games Store, Battle.net (Diablo, WoW), and Genshin Impact.
  • Cons: Windows 11 is not optimized for touchscreens or controllers. Navigating the desktop can be frustrating. Sleeping and waking the device in the middle of a game is less reliable than on the Steam Deck and can sometimes crash the game.

Ergonomics and Controls

Valve has always excelled at ergonomics. The Steam Deck is large, but the grip is deep and comfortable for long sessions. It also features dual trackpads, which are essential for playing strategy games or mouse-heavy titles like Civilization VI.

The ROG Ally X improved heavily on the original model’s design. It now features deeper handles and better button placement. However, it still lacks trackpads. Navigating Windows or playing strategy games requires using the joystick as a mouse cursor or using the touchscreen, which is less precise.

Verdict: Which Should You Buy?

Choose the Steam Deck OLED ($549) if:

  • You want a “pick up and play” console experience without fiddling with settings.
  • You primarily play games already in your Steam library.
  • You value screen quality (OLED) over raw resolution.
  • You are on a stricter budget.

Choose the ROG Ally X ($799) if:

  • You want the best battery life available in a handheld today.
  • You subscribe to Xbox Game Pass for PC.
  • You play competitive shooters like Call of Duty or Fortnite.
  • You want higher frame rates and 1080p resolution.

Frequently Asked Questions

Can I upgrade the storage on these devices? Yes. Both devices allow you to upgrade the internal SSD. The Steam Deck OLED requires a shorter M.2 2230 SSD. The ROG Ally X supports the full-size M.2 2280 SSD, which is generally cheaper and easier to find in sizes up to 4TB.

Does the ROG Ally X suffer from the SD card issue? The original ROG Ally had a hardware flaw where heat would destroy SD cards. ASUS moved the SD card slot on the Ally X to the opposite side of the device, away from the heat vents, to resolve this issue.

Which device is heavier? The ROG Ally X weighs approximately 678 grams, while the Steam Deck OLED weighs about 640 grams. The difference is negligible in hand, though the Steam Deck feels slightly lighter due to weight distribution.

Do these handhelds support docking to a TV? Yes. Both devices have USB-C ports that support video out. You can connect them to a dock (sold separately) to play on a TV or monitor with a mouse and keyboard. The ROG Ally X has two USB-C ports, whereas the Steam Deck only has one.