Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | ASUS - ROG Ally X | Valve - Steam Deck OLED 1TB |
|---|---|---|
| RAM | 24 GB | 16 GB |
| Max refresh | 120 Hz | 90 Hz |
| Ray tracing | true | false |
Between the ROG Ally X and Steam Deck OLED 1TB, the ROG Ally X comes out ahead in ram / max refresh, while the Steam Deck OLED 1TB wins on several specs. Overall, the ROG Ally X scores 63.2 and the Steam Deck OLED 1TB scores 57.2 on our Mars Score.
Which should you buy?
The ROG Ally X edges ahead on the Mars Score (63.2 vs 57.2), but the 6.0-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the ROG Ally X if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are ram, max refresh, ray tracing. The single most decisive one: RAM — 50.00% more. 24 GB vs 16 GB.
The Steam Deck OLED 1TB similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable storage, max resolution, disc drive, so those specs do not separate the two — focus on the differences below.
Bottom line: the ROG Ally X is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: ASUS - ROG Ally X or Valve - Steam Deck OLED 1TB?
ASUS - ROG Ally X leads the current Mars Score by 6.0 points.The more useful decision is the trade-off behind that result: compare ram, max refresh against the way you will actually use the product.
Choose ASUS - ROG Ally X if…
ASUS - ROG Ally X has the measurable edge on ram gb, max refresh hz, has ray tracing.
Choose Valve - Steam Deck OLED 1TB if…
Valve - Steam Deck OLED 1TB does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why ASUS - ROG Ally X wins
- ▲RAM — 50.00% more. 24 GB vs 16 GB.
- ▲Max refresh — 33.33% more. 120 Hz vs 90 Hz.
- ▲Has Ray tracing.
Why Valve - Steam Deck OLED 1TB wins
- No decisive advantages.
Spec comparison
Performance
| Spec | ASUS - ROG Ally X | Valve - Steam Deck OLED 1TB |
|---|---|---|
| CPU | AMD Ryzen Z1 Extreme | AMD Zen 2 4-core |
| GPU | AMD RDNA 3 (~8.6 TFLOPS) | AMD RDNA 2 (1.6 TFLOPS) |
| RAMⓘ | 24 GBlead | 16 GB |
| Max resolution | 1080p | 1080p |
| Max refreshⓘ | 120 Hzlead | 90 Hz |
| Ray tracing | truelead | false |
| VRRⓘ | true | true |
Storage
| Spec | ASUS - ROG Ally X | Valve - Steam Deck OLED 1TB |
|---|---|---|
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | NVMe SSD | NVMe SSD |
| Expandable storageⓘ | true | true |
Design & I/O
| Spec | ASUS - ROG Ally X | Valve - Steam Deck OLED 1TB |
|---|---|---|
| Disc drive | false | false |
| HDMIⓘ | 0 | 0 |
| USB ports | 1 | 1 |
| Weight | 0.678 kg | 0.640 kglead |
| VR support | false | false |
Frequently asked
Does ROG Ally X or Steam Deck OLED 1TB have a disc drive?+
Neither has a disc drive.
Which supports higher refresh rates, ROG Ally X or Steam Deck OLED 1TB?+
ROG Ally X supports up to 120Hz vs 90Hz.