Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Acer - Swift 14 AI | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Claimed battery life | 26 h | 11 h |
| RAM | 16 GB | 32 GB |
| CPU cores | 12 | 16 |
| Screen size | 14 " | 16 " |
| Thunderbolt ports | 0 | 2 |
| Battery | 75 Wh | 76 Wh |
Between the Swift 14 AI and Galaxy Book4 Ultra, the Swift 14 AI comes out ahead in claimed battery life / weight, while the Galaxy Book4 Ultra wins on ram / cpu cores. Overall, the Swift 14 AI scores 68.6 and the Galaxy Book4 Ultra scores 70.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (68.6 vs 70.3). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Swift 14 AI 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 claimed battery life, weight. The single most decisive one: Claimed battery life — 136.36% more. 26 h vs 11 h.
Pick the Galaxy Book4 Ultra if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are ram, cpu cores, screen size, among others. The single most decisive one: RAM — 100.00% more. 32 GB vs 16 GB.
Both ship with comparable storage, refresh rate, backlit keyboard, 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 14 AI or Samsung - Galaxy Book4 Ultra?
Samsung - Galaxy Book4 Ultra leads the current Mars Score by 1.7 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 14 AI if…
Acer - Swift 14 AI has the measurable edge on claimed battery h, weight kg.
Choose Samsung - Galaxy Book4 Ultra if…
Samsung - Galaxy Book4 Ultra has the measurable edge on ram gb, cpu cores, screen size in.
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 14 AI wins
- ▲Claimed battery life — 136.36% more. 26 h vs 11 h.
- ▲Weight — 0.54 kg less. 1.32 vs 1.86.
Why Samsung - Galaxy Book4 Ultra wins
- ▲RAM — 100.00% more. 32 GB vs 16 GB.
- ▲CPU cores — 33.33% more. 16 vs 12.
- ▲Screen size — 14.29% more. 16 " vs 14 ".
- ▲Thunderbolt ports — 2.00 more. 2 vs 0.
- ▲Battery — 1.33% more. 76 Wh vs 75 Wh.
- ▲Panel type: OLED (vs IPS).
Spec comparison
Design
| Spec | Acer - Swift 14 AI | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Weight | 1.32 kglead | 1.86 kg |
| Thickness | 15.9 mmlead | 16.5 mm |
| Build material | aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | Acer - Swift 14 AI | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Screen size | 14 " | 16 "lead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Panel typeⓘ | IPS | OLEDlead |
Performance
| Spec | Acer - Swift 14 AI | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| CPU | Snapdragon X Elite X1E-78-100 | Intel Core Ultra 9 185H |
| CPU cores | 12 | 16lead |
| GPUⓘ | Qualcomm Adreno | NVIDIA RTX 4070 Laptop |
| RAMⓘ | 16 GB | 32 GBlead |
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | Acer - Swift 14 AI | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Batteryⓘ | 75 Wh | 76 Whlead |
| Claimed battery life | 26 hlead | 11 h |
| USB-C portsⓘ | 2lead | 1 |
| Thunderbolt portsⓘ | 0 | 2lead |
| HDMI | true | true |
Frequently asked
Which has better battery life, Swift 14 AI or Galaxy Book4 Ultra?+
Swift 14 AI claims up to 26 hours — 26h vs 11h.
Which is lighter, Swift 14 AI or Galaxy Book4 Ultra?+
Swift 14 AI is lighter at 1.32 kg vs 1.86 kg.
Which has more RAM, Swift 14 AI or Galaxy Book4 Ultra?+
Galaxy Book4 Ultra offers 32GB of RAM.
Which has an OLED display, Swift 14 AI or Galaxy Book4 Ultra?+
Galaxy Book4 Ultra has an OLED display; Swift 14 AI uses IPS.