Between the Zenbook Duo (2024) and Yoga 9i Gen 9, the Zenbook Duo (2024) comes out ahead in ram, while the Yoga 9i Gen 9 wins on claimed battery life and weight. Overall, the Zenbook Duo (2024) scores 68.1 and the Yoga 9i Gen 9 scores 65.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (68.1 vs 65.9). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Zenbook Duo (2024) if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are ram.
Pick the Yoga 9i Gen 9 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 storage, battery, screen size, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why ASUS - Zenbook Duo (2024) wins
- ▲RAM — 100.00% more. 32 GB vs 16 GB.
Why Lenovo - Yoga 9i Gen 9 wins
- ▲Claimed battery life — 25.00% more. 15 h vs 12 h.
- ▲Weight — 0.29 kg less. 1.36 vs 1.65.
Spec comparison
Design
| Spec | ASUS - Zenbook Duo (2024) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Weight | 1.65 kg | 1.36 kglead |
| Thickness | 14.6 mmlead | 16 mm |
| Build material | aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | false | truelead |
Display
| Spec | ASUS - Zenbook Duo (2024) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Screen sizeⓘ | 14 " | 14 " |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Panel typeⓘ | OLED | OLED |
Performance
| Spec | ASUS - Zenbook Duo (2024) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| CPU | Intel Core Ultra 9 185H | Intel Core Ultra 7 155H |
| CPU cores | 16 | 16 |
| GPUⓘ | Intel Arc Graphics | Intel Arc Graphics |
| RAMⓘ | 32 GBlead | 16 GB |
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | ASUS - Zenbook Duo (2024) | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Batteryⓘ | 75 Wh | 75 Wh |
| Claimed battery life | 12 h | 15 hlead |
| USB-C ports | 2 | 2 |
| Thunderbolt portsⓘ | 2 | 2 |
| HDMI | truelead | false |
Frequently asked
Which has better battery life, Zenbook Duo (2024) or Yoga 9i Gen 9?+
Yoga 9i Gen 9 claims up to 15 hours — 12h vs 15h.
Which is lighter, Zenbook Duo (2024) or Yoga 9i Gen 9?+
Yoga 9i Gen 9 is lighter at 1.36 kg vs 1.65 kg.
Which has more RAM, Zenbook Duo (2024) or Yoga 9i Gen 9?+
Zenbook Duo (2024) offers 32GB of RAM.
Which has an OLED display, Zenbook Duo (2024) or Yoga 9i Gen 9?+
Both have OLED displays.
Spec-level deep dives
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