Asus ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026) vs MSI Katana 15 HX B14 RTX 5070 (2025)
What ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026) does better (13) and where Katana 15 HX B14 RTX 5070 (2025) wins (2) — every spec side by side.
9.4Score
Higher score 13 advantages≈ $7,100
vs
9.8Display8.2
7.8Memory & storage9.2
4.4Battery & portability4.7
9.8Features & cooling2.3
Dimensions
Size comparison
ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026)Katana 15 HX B14 RTX 5070 (2025)
| ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026) | Katana 15 HX B14 RTX 5070 (2025) | Difference | |
|---|---|---|---|
| Depth | 247 mm | 262 mm | −15 mm |
| Width | 355 mm | 359 mm | −4 mm |
| Thickness | 25 mm | 26 mm | −1 mm |
| Weight | 2.8 kg | 2.4 kg | +0.4 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026) better than Katana 15 HX B14 RTX 5070 (2025)?
- Video memory24 GB vs 8 GB3×
- GPU shader cores10,496 vs 4,6082.3×
- Resolution class3K (1800p/2000p) vs QHD (1440p/1600p)
- Panel typeOLED vs IPS
- Thunderbolt or USB4Yes · Katana 15 HX B14 RTX 5070 (2025): No
- Battery capacity90 Wh vs 75 Wh+20%
- RAM (base)64 GB vs 16 GB4×
- SSD (base)2,000 GB vs 512 GB3.9×
- Wi-Fi standardWi-Fi 7 vs Wi-Fi 6+17%
- Thickness25 mm vs 26 mm+4%
- Webcam1,080p vs 720p+50%
- Bluetooth6 vs 5.3+13%
Why is Katana 15 HX B14 RTX 5070 (2025) better than ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026)?
- SSD (up to)2,000 GB vs 4,000 GB2×
- Weight2.82 kg vs 2.4 kg+18%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5090 Laptop | GeForce RTX 5070 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| Video memory | 24 GB | 8 GB |
| Video memory type | GDDR7 | GDDR7 |
| GPU shader cores | 10,496 | 4,608 |
| Processor | ||
| Processor | Core Ultra 9 386H | Core i7-14650HX |
| CPU maker | Intel | Intel |
| CPU cores | — | 16 |
| Max CPU clock | — | 5.2 GHz |
| Display | ||
| Screen size | 16″ | 15.6″ |
| Resolution | 2880 × 1800 | 2560 × 1440 |
| Resolution class | 3K (1800p/2000p) | QHD (1440p/1600p) |
| Refresh rate | — | 165 Hz |
| Panel type | OLED | IPS |
| Brightness | 1,100 nits | — |
| Aspect ratio | 16:10 | 16:9 |
| Touchscreen | Yes | — |
| Memory & storage | ||
| RAM (up to) | 64 GB | 64 GB |
| RAM (base) | 64 GB | 16 GB |
| RAM type | LPDDR5X | — |
| SSD (up to) | 2,000 GB | 4,000 GB |
| SSD (base) | 2,000 GB | 512 GB |
| Battery & power | ||
| Battery capacity | 90 Wh | 75 Wh |
| Power adapter | 250 W | 240 W |
| USB-C charging (Power Delivery) | — | Yes |
| Design & cooling | ||
| Weight | 2.82 kg | 2.4 kg |
| Thickness | 25 mm | 26 mm |
| Width | 355 mm | 359 mm |
| Depth | 247 mm | 262 mm |
| Colours | Grey | Black |
| Ports & wireless | ||
| Thunderbolt / USB4 | Thunderbolt 4 | — |
| Thunderbolt or USB4 | Yes | No |
| HDMI | HDMI 2.1 | HDMI 2.1 |
| HDMI 2.1 | Yes | Yes |
| Ethernet | — | 1 Gbit/s |
| Ethernet port | Yes | Yes |
| SD card reader | Yes | — |
| 3.5 mm audio jack | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 6 |
| Bluetooth | 6 | 5.3 |
| Keyboard & camera | ||
| Webcam | 1,080p | 720p |
| Audio | ||
| Speakers | 4 speakers | 2 speakers |
| Dolby Atmos | Yes | — |
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