Samsung - Galaxy Book4 Ultra vs ASUS - Zenbook S 14 UX5406
Between the Galaxy Book4 Ultra and Zenbook S 14 UX5406, the Galaxy Book4 Ultra comes out ahead in cpu cores / screen size, while the Zenbook S 14 UX5406 wins on claimed battery life / weight. Overall, the Galaxy Book4 Ultra scores 70.1 and the Zenbook S 14 UX5406 scores 64.2 on our Mars Score.
Which should you buy?
The Galaxy Book4 Ultra edges ahead on the Mars Score (70.1 vs 64.2), but the 5.9-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Galaxy Book4 Ultra if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are cpu cores, screen size, battery.
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 claimed battery life, weight.
Both ship with comparable ram, storage, refresh rate, so those specs do not separate the two — focus on the differences below.
Bottom line: the Galaxy Book4 Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Samsung - Galaxy Book4 Ultra wins
- ▲CPU cores — 100.00% more. 16 vs 8.
- ▲Screen size — 14.29% more. 16 " vs 14 ".
- ▲Battery — 5.56% more. 76 Wh vs 72 Wh.
Why ASUS - Zenbook S 14 UX5406 wins
- ▲Claimed battery life — 45.45% more. 16 h vs 11 h.
- ▲Weight — 0.66 kg less. 1.20 vs 1.86.
Spec comparison
Design
| Spec | Samsung - Galaxy Book4 Ultra | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| Weight | 1.86 kg | 1.20 kglead |
| Thickness | 16.5 mm | 11.9 mmlead |
| Build material | aluminum | ceraluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | Samsung - Galaxy Book4 Ultra | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| Screen sizeⓘ | 16 "lead | 14 " |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Panel typeⓘ | OLED | OLED |
Performance
| Spec | Samsung - Galaxy Book4 Ultra | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| CPU | Intel Core Ultra 9 185H | Intel Core Ultra 7 258V |
| CPU cores | 16lead | 8 |
| GPUⓘ | NVIDIA RTX 4070 Laptop | Intel Arc 140V |
| RAMⓘ | 32 GB | 32 GB |
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | Samsung - Galaxy Book4 Ultra | ASUS - Zenbook S 14 UX5406 |
|---|---|---|
| Batteryⓘ | 76 Whlead | 72 Wh |
| Claimed battery life | 11 h | 16 hlead |
| USB-C ports | 1 | 2lead |
| Thunderbolt portsⓘ | 2 | 2 |
| HDMI | true | true |
Frequently asked
Which has better battery life, Galaxy Book4 Ultra or Zenbook S 14 UX5406?+
Zenbook S 14 UX5406 claims up to 16 hours — 11h vs 16h.
Which is lighter, Galaxy Book4 Ultra or Zenbook S 14 UX5406?+
Zenbook S 14 UX5406 is lighter at 1.20 kg vs 1.86 kg.
Which has an OLED display, Galaxy Book4 Ultra or Zenbook S 14 UX5406?+
Both have OLED displays.
Spec-level deep dives
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