Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Acer - Swift Edge 16 | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| RAM | 16 GB | 32 GB |
| Claimed battery life | 12 h | 16 h |
| Screen size | 16 " | 14 " |
| Battery | 65 Wh | 72 Wh |
| Thunderbolt ports | 0 | 2 |
| Weight | 1.23 kg | 1.20 kg |
Between the Swift Edge 16 and Zenbook S 14 UX5406, the Swift Edge 16 comes out ahead in screen size, while the Zenbook S 14 UX5406 wins on ram / claimed battery life. Overall, the Swift Edge 16 scores 67.1 and the Zenbook S 14 UX5406 scores 69.1 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (67.1 vs 69.1). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Swift Edge 16 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are screen size. The single most decisive one: Screen size — 14.29% more. 16 " vs 14 ".
Pick the Zenbook S 14 UX5406 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are ram, claimed battery life, battery, among others. The single most decisive one: RAM — 100.00% more. 32 GB vs 16 GB.
Both ship with comparable storage, refresh rate, cpu cores, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Acer - Swift Edge 16 or ASUS - Zenbook S 14 UX5406?
ASUS - Zenbook S 14 UX5406 leads the current Mars Score by 2.0 points.The more useful decision is the trade-off behind that result: compare screen size, ram, weight, battery against the way you will actually use the product.
Choose Acer - Swift Edge 16 if…
Acer - Swift Edge 16 has the measurable edge on screen size in.
Choose ASUS - Zenbook S 14 UX5406 if…
ASUS - Zenbook S 14 UX5406 has the measurable edge on ram gb, claimed battery h, battery wh.
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 Acer - Swift Edge 16 wins
- ▲Screen size — 14.29% more. 16 " vs 14 ".
Why ASUS - Zenbook S 14 UX5406 wins
- ▲RAM — 100.00% more. 32 GB vs 16 GB.
- ▲Claimed battery life — 33.33% more. 16 h vs 12 h.
- ▲Battery — 10.77% more. 72 Wh vs 65 Wh.
- ▲Thunderbolt ports — 2.00 more. 2 vs 0.
- ▲Weight — 0.03 kg less. 1.20 vs 1.23.
Spec comparison
Design
| Spec | Acer - Swift Edge 16 | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| Weight | 1.23 kg | 1.20 kglead |
| Thickness | 12.95 mm | 11.9 mmlead |
| Build material | magnesium | ceraluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | Acer - Swift Edge 16 | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| Screen size | 16 "lead | 14 " |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Panel typeⓘ | OLED | OLED |
Performance
| Spec | Acer - Swift Edge 16 | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| CPU | AMD Ryzen 7 8840U | Intel Core Ultra 7 258V |
| CPU cores | 8 | 8 |
| GPUⓘ | AMD Radeon 780M | Intel Arc 140V |
| RAMⓘ | 16 GB | 32 GBlead |
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | Acer - Swift Edge 16 | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| Batteryⓘ | 65 Wh | 72 Whlead |
| Claimed battery life | 12 h | 16 hlead |
| USB-C portsⓘ | 2 | 2 |
| Thunderbolt portsⓘ | 0 | 2lead |
| HDMI | true | true |
Frequently asked
Which has better battery life, Swift Edge 16 or Zenbook S 14 UX5406?+
Zenbook S 14 UX5406 claims up to 16 hours — 12h vs 16h.
Which is lighter, Swift Edge 16 or Zenbook S 14 UX5406?+
Zenbook S 14 UX5406 is lighter at 1.20 kg vs 1.23 kg.
Which has more RAM, Swift Edge 16 or Zenbook S 14 UX5406?+
Zenbook S 14 UX5406 offers 32GB of RAM.
Which has an OLED display, Swift Edge 16 or Zenbook S 14 UX5406?+
Both have OLED displays.