Samsung - Galaxy Book4 Ultra 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 | Samsung - Galaxy Book4 Ultra | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| RAM | 32 GB | 16 GB |
| Claimed battery life | 11 h | 15 h |
| Screen size | 16 " | 14 " |
| Battery | 76 Wh | 75 Wh |
| Weight | 1.86 kg | 1.36 kg |
Between the Galaxy Book4 Ultra and Yoga 9i Gen 9, the Galaxy Book4 Ultra comes out ahead in ram / screen size, while the Yoga 9i Gen 9 wins on claimed battery life / weight. Overall, the Galaxy Book4 Ultra scores 70.3 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 (70.3 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 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 ram, screen size, battery. The single most decisive one: RAM — 100.00% more. 32 GB vs 16 GB.
Pick the Yoga 9i Gen 9 if you care most about claimed battery life / weight. Its strongest claims are claimed battery life, weight. The single most decisive one: Claimed battery life — 36.36% more. 15 h vs 11 h.
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: Samsung - Galaxy Book4 Ultra or Lenovo - Yoga 9i Gen 9?
Samsung - Galaxy Book4 Ultra leads the current Mars Score by 0.8 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 Samsung - Galaxy Book4 Ultra if…
Samsung - Galaxy Book4 Ultra has the measurable edge on ram gb, screen size in, battery wh.
Choose Lenovo - Yoga 9i Gen 9 if…
Lenovo - Yoga 9i Gen 9 has the measurable edge on claimed battery h, weight kg.
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 Samsung - Galaxy Book4 Ultra wins
- ▲RAM — 100.00% more. 32 GB vs 16 GB.
- ▲Screen size — 14.29% more. 16 " vs 14 ".
- ▲Battery — 1.33% more. 76 Wh vs 75 Wh.
Why Lenovo - Yoga 9i Gen 9 wins
- ▲Claimed battery life — 36.36% more. 15 h vs 11 h.
- ▲Weight — 0.50 kg less. 1.36 vs 1.86.
Spec comparison
Design
| Spec | Samsung - Galaxy Book4 Ultra | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Weight | 1.86 kg | 1.36 kglead |
| Thickness | 16.5 mm | 16 mmlead |
| Build material | aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | Samsung - Galaxy Book4 Ultra | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Screen size | 16 "lead | 14 " |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Panel typeⓘ | OLED | OLED |
Performance
| Spec | Samsung - Galaxy Book4 Ultra | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| CPU | Intel Core Ultra 9 185H | Intel Core Ultra 7 155H |
| CPU cores | 16 | 16 |
| GPUⓘ | NVIDIA RTX 4070 Laptop | Intel Arc Graphics |
| RAMⓘ | 32 GBlead | 16 GB |
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | Samsung - Galaxy Book4 Ultra | Lenovo - Yoga 9i Gen 9 |
|---|---|---|
| Batteryⓘ | 76 Whlead | 75 Wh |
| Claimed battery life | 11 h | 15 hlead |
| USB-C portsⓘ | 1 | 2lead |
| Thunderbolt portsⓘ | 2 | 2 |
| HDMI | truelead | false |
Frequently asked
Which has better battery life, Galaxy Book4 Ultra or Yoga 9i Gen 9?+
Yoga 9i Gen 9 claims up to 15 hours — 11h vs 15h.
Which is lighter, Galaxy Book4 Ultra or Yoga 9i Gen 9?+
Yoga 9i Gen 9 is lighter at 1.36 kg vs 1.86 kg.
Which has more RAM, Galaxy Book4 Ultra or Yoga 9i Gen 9?+
Galaxy Book4 Ultra offers 32GB of RAM.
Which has an OLED display, Galaxy Book4 Ultra or Yoga 9i Gen 9?+
Both have OLED displays.