ASUS - Vivobook S 14 OLED (2025) vs Lenovo - Yoga 9i Gen 9
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | ASUS - Vivobook S 14 OLED (2025) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| CPU cores | 10 | 16 |
| Claimed battery life | 16 h | 15 h |
| Thunderbolt ports | 0 | 2 |
| Weight | 1.3 kg | 1.36 kg |
Between the Vivobook S 14 OLED (2025) and Yoga 9i Gen 9, the Vivobook S 14 OLED (2025) comes out ahead in claimed battery life / weight, while the Yoga 9i Gen 9 wins on cpu cores / thunderbolt ports. Overall, the Vivobook S 14 OLED (2025) scores 68.1 and the Yoga 9i Gen 9 scores 69.5 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (68.1 vs 69.5). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Vivobook S 14 OLED (2025) 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 — 6.67% more. 16 h vs 15 h.
Pick the Yoga 9i Gen 9 if you care most about cpu cores / thunderbolt ports. Its strongest claims are cpu cores, thunderbolt ports. The single most decisive one: CPU cores — 60.00% more. 16 vs 10.
Both ship with comparable ram, storage, battery, 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: ASUS - Vivobook S 14 OLED (2025) or Lenovo - Yoga 9i Gen 9?
Lenovo - Yoga 9i Gen 9 leads the current Mars Score by 1.4 points.The more useful decision is the trade-off behind that result: compare weight against the way you will actually use the product.
Choose ASUS - Vivobook S 14 OLED (2025) if…
ASUS - Vivobook S 14 OLED (2025) has the measurable edge on claimed battery h, weight kg.
Choose Lenovo - Yoga 9i Gen 9 if…
Lenovo - Yoga 9i Gen 9 has the measurable edge on cpu cores, port thunderbolt count.
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 - Vivobook S 14 OLED (2025) wins
- ▲Claimed battery life — 6.67% more. 16 h vs 15 h.
- ▲Weight — 0.06 kg less. 1.3 vs 1.36.
Why Lenovo - Yoga 9i Gen 9 wins
- ▲CPU cores — 60.00% more. 16 vs 10.
- ▲Thunderbolt ports — 2.00 more. 2 vs 0.
Spec comparison
Design
| Spec | ASUS - Vivobook S 14 OLED (2025) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Weight | 1.3 kglead | 1.36 kg |
| Thickness | 13.9 mmlead | 16 mm |
| Build material | aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | ASUS - Vivobook S 14 OLED (2025) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Screen size | 14 " | 14 " |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Panel typeⓘ | OLED | OLED |
Performance
| Spec | ASUS - Vivobook S 14 OLED (2025) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| CPU | AMD Ryzen AI 9 365 | Intel Core Ultra 7 155H |
| CPU cores | 10 | 16lead |
| GPUⓘ | AMD Radeon 880M | Intel Arc Graphics |
| RAMⓘ | 16 GB | 16 GB |
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | ASUS - Vivobook S 14 OLED (2025) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Batteryⓘ | 75 Wh | 75 Wh |
| Claimed battery life | 16 hlead | 15 h |
| USB-C portsⓘ | 2 | 2 |
| Thunderbolt portsⓘ | 0 | 2lead |
| HDMI | truelead | false |
Frequently asked
Which has better battery life, Vivobook S 14 OLED (2025) or Yoga 9i Gen 9?+
Vivobook S 14 OLED (2025) claims up to 16 hours — 16h vs 15h.
Which is lighter, Vivobook S 14 OLED (2025) or Yoga 9i Gen 9?+
Vivobook S 14 OLED (2025) is lighter at 1.3 kg vs 1.36 kg.
Which has an OLED display, Vivobook S 14 OLED (2025) or Yoga 9i Gen 9?+
Both have OLED displays.