ASUS - ROG Ally Z1 Extreme vs Valve - Steam Deck LCD 256GB
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | ASUS - ROG Ally Z1 Extreme | Valve - Steam Deck LCD 256GB |
|---|---|---|
| Storage | 512 GB | 256 GB |
| Max refresh | 120 Hz | 60 Hz |
| Ray tracing | true | false |
| VRR | true | false |
Between the ROG Ally Z1 Extreme and Steam Deck LCD 256GB, the ROG Ally Z1 Extreme comes out ahead in storage / max refresh, while the Steam Deck LCD 256GB wins on several specs. Overall, the ROG Ally Z1 Extreme scores 54.6 and the Steam Deck LCD 256GB scores 47.8 on our Mars Score.
Which should you buy?
The ROG Ally Z1 Extreme edges ahead on the Mars Score (54.6 vs 47.8), but the 6.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the ROG Ally Z1 Extreme if you care most about storage / max refresh. The biggest gaps in its favor are storage, max refresh, ray tracing, among others. The single most decisive one: Storage — 100.00% more. 512 GB vs 256 GB.
The Steam Deck LCD 256GB similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable ram, max resolution, disc drive, so those specs do not separate the two — focus on the differences below.
Bottom line: the ROG Ally Z1 Extreme 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 Z1 Extreme or Valve - Steam Deck LCD 256GB?
ASUS - ROG Ally Z1 Extreme leads the current Mars Score by 6.8 points.The more useful decision is the trade-off behind that result: compare storage, max refresh against the way you will actually use the product.
Choose ASUS - ROG Ally Z1 Extreme if…
ASUS - ROG Ally Z1 Extreme has the measurable edge on storage gb, max refresh hz, has ray tracing.
Choose Valve - Steam Deck LCD 256GB if…
Valve - Steam Deck LCD 256GB 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 Z1 Extreme wins
- ▲Storage — 100.00% more. 512 GB vs 256 GB.
- ▲Max refresh — 100.00% more. 120 Hz vs 60 Hz.
- ▲Has Ray tracing.
- ▲Has VRR.
Why Valve - Steam Deck LCD 256GB wins
- No decisive advantages.
Spec comparison
Performance
| Spec | ASUS - ROG Ally Z1 Extreme | Valve - Steam Deck LCD 256GB |
|---|---|---|
| CPU | AMD Ryzen Z1 Extreme | AMD Zen 2 4-core |
| GPU | AMD RDNA 3 (~8.6 TFLOPS) | AMD RDNA 2 (1.6 TFLOPS) |
| RAMⓘ | 16 GB | 16 GB |
| Max resolution | 1080p | 1080p |
| Max refreshⓘ | 120 Hzlead | 60 Hz |
| Ray tracing | truelead | false |
| VRRⓘ | truelead | false |
Storage
| Spec | ASUS - ROG Ally Z1 Extreme | Valve - Steam Deck LCD 256GB |
|---|---|---|
| Storageⓘ | 512 GBlead | 256 GB |
| Storage typeⓘ | NVMe SSD | NVMe SSD |
| Expandable storageⓘ | true | true |
Design & I/O
| Spec | ASUS - ROG Ally Z1 Extreme | Valve - Steam Deck LCD 256GB |
|---|---|---|
| Disc drive | false | false |
| HDMIⓘ | 0 | 0 |
| USB ports | 1 | 1 |
| Weight | 0.608 kglead | 0.669 kg |
| VR support | false | false |
Frequently asked
Does ROG Ally Z1 Extreme or Steam Deck LCD 256GB have a disc drive?+
Neither has a disc drive.
Which has more storage, ROG Ally Z1 Extreme or Steam Deck LCD 256GB?+
ROG Ally Z1 Extreme ships with 512GB of NVMe SSD.
Which supports higher refresh rates, ROG Ally Z1 Extreme or Steam Deck LCD 256GB?+
ROG Ally Z1 Extreme supports up to 120Hz vs 60Hz.