ASUS - ROG Zephyrus G16 (2025) vs Samsung - Galaxy Book4 Ultra
Between the ROG Zephyrus G16 (2025) and Galaxy Book4 Ultra, the ROG Zephyrus G16 (2025) comes out ahead in refresh rate / battery, while the Galaxy Book4 Ultra wins on cpu cores / thunderbolt ports. Overall, the ROG Zephyrus G16 (2025) scores 76.5 and the Galaxy Book4 Ultra scores 70.1 on our Mars Score.
Which should you buy?
The ROG Zephyrus G16 (2025) edges ahead on the Mars Score (76.5 vs 70.1), but the 6.4-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the ROG Zephyrus G16 (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 refresh rate, battery, claimed battery life, among others.
Pick the Galaxy Book4 Ultra if you care most about cpu cores / thunderbolt ports. Its strongest claims are cpu cores, thunderbolt ports.
Both ship with comparable ram, storage, screen size, so those specs do not separate the two — focus on the differences below.
Bottom line: the ROG Zephyrus G16 (2025) is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why ASUS - ROG Zephyrus G16 (2025) wins
- ▲Refresh rate — 100.00% more. 240 Hz vs 120 Hz.
- ▲Battery — 18.42% more. 90 Wh vs 76 Wh.
- ▲Claimed battery life — 9.09% more. 12 h vs 11 h.
- ▲Weight — 0.01 kg less. 1.85 vs 1.86.
Why Samsung - Galaxy Book4 Ultra wins
- ▲CPU cores — 33.33% more. 16 vs 12.
- ▲Thunderbolt ports — 1.00 more. 2 vs 1.
Spec comparison
Design
| Spec | ASUS - ROG Zephyrus G16 (2025) | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Weight | 1.85 kglead | 1.86 kg |
| Thickness | 16.4 mmlead | 16.5 mm |
| Build material | aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | ASUS - ROG Zephyrus G16 (2025) | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Screen sizeⓘ | 16 " | 16 " |
| Refresh rateⓘ | 240 Hzlead | 120 Hz |
| Panel typeⓘ | OLED | OLED |
Performance
| Spec | ASUS - ROG Zephyrus G16 (2025) | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| CPU | AMD Ryzen AI 9 HX 370 | Intel Core Ultra 9 185H |
| CPU cores | 12 | 16lead |
| GPUⓘ | NVIDIA GeForce RTX 5070 Ti Laptop | NVIDIA RTX 4070 Laptop |
| RAMⓘ | 32 GB | 32 GB |
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | ASUS - ROG Zephyrus G16 (2025) | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Batteryⓘ | 90 Whlead | 76 Wh |
| Claimed battery life | 12 hlead | 11 h |
| USB-C ports | 2lead | 1 |
| Thunderbolt portsⓘ | 1 | 2lead |
| HDMI | true | true |
Frequently asked
Which has better battery life, ROG Zephyrus G16 (2025) or Galaxy Book4 Ultra?+
ROG Zephyrus G16 (2025) claims up to 12 hours — 12h vs 11h.
Which is lighter, ROG Zephyrus G16 (2025) or Galaxy Book4 Ultra?+
ROG Zephyrus G16 (2025) is lighter at 1.85 kg vs 1.86 kg.
Which has an OLED display, ROG Zephyrus G16 (2025) or Galaxy Book4 Ultra?+
Both have OLED displays.
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.