Motorola Razr 40 vs Redmi K90 Ultra
The Motorola Razr 40 (2023) runs on the Qualcomm Snapdragon 7 Gen 1, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 56/100 (a 17-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4200); the main camera is 64 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 840,330); the Motorola Razr 40 is noticeably lighter (188g vs 227g).
Motorola Razr 40
Redmi K90 Ultra
- Better main camera: 64MP vs 50MP
- Lighter: 188g vs 227g
- Better camera (50/100 vs 37/100)
- Better portability (73/100 vs 40/100)
- Higher AnTuTu: 3119308 vs 840330
- Better Geekbench Single: 3041 vs 1039
- Better Geekbench Multi: 9494 vs 2885
- Bigger battery: 8550 vs 4200 mAh
- Faster charging: 100W vs 30W
- Higher refresh rate: 165Hz vs 144Hz
- Higher performance (92/100 vs 55/100)
- Longer battery life (78/100 vs 34/100)
- Better display (94/100 vs 91/100)
Comparing the Motorola Razr 40 vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 17 points higher (73/100 vs 56/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 55/100). In the "camera" category, the Motorola Razr 40 leads (50/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 34/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Motorola Razr 40 (92/100 vs 55/100). In the "display" category, the Redmi K90 Ultra and the Motorola Razr 40 are nearly equal (94/100 vs 91/100). In the "camera" category, the Motorola Razr 40 is a bit better (50/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Motorola Razr 40 (78/100 vs 34/100). In the "portability" category, the Motorola Razr 40 significantly outperforms the Redmi K90 Ultra (73/100 vs 40/100).
| Specification | Motorola Razr 40 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 7 Gen 1 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 840330 | 3119308 | |
| Geekbench Single | 1039 | 3041 | |
| Geekbench Multi | 2885 | 9494 | |
| Display | 6.9" Foldable LTPO AMOLED | 6.8" AMOLED | |
| Resolution | 1080x2640 | 1280x2772 | |
| Refresh rate | 144 Hz | 165 Hz | |
| Battery | 4200 mAh | 8550 mAh | |
| Charging | 30W | 100W | |
| Wireless charging | 5W | 0W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 13, up to 3 major Android upgrades | Android 16 | |
| Brightness (peak) | 1400 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 170.8×74.0×7.4 mm | 162.9×77.9×8.2 mm | |
| Weight | 188 g | 227 g | |
| Launch price | — | $420 |
Motorola Razr 40
- Main: 64MP f/f/1.7
- Ultrawide: 13MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Motorola Razr 40
- 6.9" Foldable LTPO AMOLED
- Resolution: 1080x2640
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Motorola Razr 40
- 4200 mAh
- Wired: 30W
- Wireless: 5W
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared Motorola Razr 40 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Motorola Razr 40 by 73.1% in our overall performance rating.
Motorola Razr 40
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Motorola Razr 40 (92/100 vs 55/100).
display
In the "display" category, the Redmi K90 Ultra and the Motorola Razr 40 are nearly equal (94/100 vs 91/100).
camera
In the "camera" category, the Motorola Razr 40 is a bit better (50/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Motorola Razr 40 (78/100 vs 34/100).
portability
In the "portability" category, the Motorola Razr 40 significantly outperforms the Redmi K90 Ultra (73/100 vs 40/100).
Which is better: the Motorola Razr 40 or the Redmi K90 Ultra?
The Redmi K90 Ultra is noticeably better than the Motorola Razr 40 — the overall rating gap is 17 points.
What is the rating of the Motorola Razr 40 and the Redmi K90 Ultra?
The Motorola Razr 40 has a MobileRank rating of 56/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Motorola Razr 40 or the Redmi K90 Ultra?
The Motorola Razr 40 leads on camera score (50/100 vs 37/100).
Which is more powerful: the Motorola Razr 40 or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 55/100).
Should you choose the Motorola Razr 40 over the Redmi K90 Ultra?
The Motorola Razr 40 is a better fit for everyday use. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.