Asus ROG Flow Z13 (2025) vs Samsung Galaxy Book6 Ultra

Updated Nov 2026 · Scored by the Let’s Compare Data Engine · How we score

  • Performance is scored from the laptop's CPU and GPU; few laptops have a published whole-system benchmark.

Verdict

Key takeaways

  • Asus ROG Flow Z13 (2025) leads Samsung Galaxy Book6 Ultra overall by 9 points (71 vs 62 out of 100).
  • Key differences: passmark CPU mark, where Asus ROG Flow Z13 (2025) has 54,789 vs 36,183; refresh rate, where Asus ROG Flow Z13 (2025) has 180 vs 120 Hz; weight, where Asus ROG Flow Z13 (2025) is 0.69 kg lighter; battery capacity, where Samsung Galaxy Book6 Ultra has 80.2 vs 70 Wh; display type, where Samsung Galaxy Book6 Ultra has Dynamic AMOLED 2X vs IPS.
Asus ROG Flow Z13 (2025) leads overall
Asus ROG Flow Z13 (2025)
71
Samsung Galaxy Book6 Ultra
62
Key differences
  • PassMark CPU MarkAsus ROG Flow Z13 (2025) 54,789 vs 36,183
  • Refresh rateAsus ROG Flow Z13 (2025) 180 vs 120 Hz
  • WeightAsus ROG Flow Z13 (2025) 0.69 kg lighter
  • Battery capacitySamsung Galaxy Book6 Ultra 80.2 vs 70 Wh
  • Display typeSamsung Galaxy Book6 Ultra Dynamic AMOLED 2X vs IPS

Scores by Category

ROG Flow Z13 (2025) wins 7 of 15 categories · Galaxy Book6 Ultra wins 5

CategoryROG Flow Z13 (2025)Galaxy Book6 UltraLead
Display
+5
Performance
+22
Battery
+6
Memory
+46
Design & Weight
+38
Processor
+19
Storage
+22
Integrated Graphics
+71
Discrete Graphics
+72
Ports
+5
Connectivity
Tie
Webcam
+100
Security
Tie
Sound
+5
Input
Tie

Physical Comparison

1.2 kg1.89 kg
ROG Flow Z13 (2025)Galaxy Book6 Ultra

Galaxy Book6 Ultra is 0.69 kg (57%) heavier than ROG Flow Z13 (2025).

Value for Money

Launch prices — enter today's prices (same currency for both).

ROG Flow Z13 (2025)

Galaxy Book6 Ultra

Watch-outs

Compromises to know before you buy

Asus ROG Flow Z13 (2025)

  • RAM is soldered — you can't upgrade it later, so buy enough now.

Samsung Galaxy Book6 Ultra

  • RAM is soldered — you can't upgrade it later, so buy enough now.

Detailed Specifications

Processor

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
Processor model

Integrated Graphics

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
Integrated graphics model

Discrete Graphics

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
Discrete graphics model
N/A
3DMark Time Spy Graphics
N/A
12,027

Memory

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
Memory capacity
128 GB100% more
64 GB
Technology
N/A
Memory upgradeable
No
No

Storage

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
Storage capacity
1,024 GB
2,048 GB100% more

Display

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
Size
13.4 in
16 in19% more
Display resolution
2560 × 1600 px
N/A
Refresh rate
180 Hz50% more
120 Hz
Display type
Brightness
N/A
1,000 nits

Battery

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
Battery capacity
70 Wh
80.2 Wh15% more

Design & Weight

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
Dimensions
30.0 × 20.4 × 1.49 cm
35.69 × 24.79 × 1.55 cm
Weight
1.2 kg37% less
1.89 kg

Performance

Feature
ROG Flow Z13 (2025)
Galaxy Book6 Ultra
PassMark CPU Mark
54,78951% more
36,183
Active cooling
Yes
Yes

Specification Note

Specifications are compiled from official manufacturer data and other reliable internet sources. Some features may vary by region or model configuration.

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