Motorola Razr 40 Ultra vs Redmi K90
The Motorola Razr 40 Ultra (2023) runs on the Qualcomm Snapdragon 8+ Gen 1, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $648 and $401. By overall MobileRank rating, the Redmi K90 leads — 68/100 vs 32/100 (a 36-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 3800); the main camera is 12 MP vs 50 MP; the Redmi K90 is faster in AnTuTu (3,088,357 vs 1,425,446); the Motorola Razr 40 Ultra is noticeably lighter (184g vs 206g).
Motorola Razr 40 Ultra
Redmi K90
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 184g vs 206g
- Better design/ergonomics (70/100 vs 42/100)
- Higher AnTuTu: 3088357 vs 1425446
- Better Geekbench Single: 3050 vs 1761
- Better Geekbench Multi: 9300 vs 4688
- Bigger battery: 7100 vs 3800 mAh
- Faster charging: 100W vs 30W
- Better main camera: 50MP vs 12MP
- Cheaper: $401 vs $648
- Higher performance (69/100 vs 22/100)
- Better camera (53/100 vs 14/100)
- Longer battery life (71/100 vs 10/100)
- Better value for money (82/100 vs 65/100)
Comparing the Motorola Razr 40 Ultra vs the Redmi K90, the Redmi K90 scores 36 points higher (68/100 vs 32/100). In the "performance" category, the Redmi K90 leads (69/100 vs 22/100). In the "camera" category, the Redmi K90 leads (53/100 vs 14/100). In the "battery" category, the Redmi K90 leads (71/100 vs 10/100). In the "value for money" category, the Redmi K90 leads (82/100 vs 65/100). In the "performance" category, the Redmi K90 significantly outperforms the Motorola Razr 40 Ultra (69/100 vs 22/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Redmi K90 significantly outperforms the Motorola Razr 40 Ultra (53/100 vs 14/100). In the "battery" category, the Redmi K90 significantly outperforms the Motorola Razr 40 Ultra (71/100 vs 10/100). In the "design" category, the Motorola Razr 40 Ultra notably outperforms the Redmi K90 (70/100 vs 42/100). In the "value for money" category, the Redmi K90 notably outperforms the Motorola Razr 40 Ultra (82/100 vs 65/100).
| Specification | Motorola Razr 40 Ultra | Redmi K90 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8+ Gen 1 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1425446 | 3088357 | |
| Geekbench Single | 1761 | 3050 | |
| Geekbench Multi | 4688 | 9300 | |
| Display | 6.9" Foldable LTPO AMOLED | 6.6" AMOLED | |
| Resolution | 1080x2640 | 2510x1156 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 3800 mAh | 7100 mAh | |
| Charging | 30W | 100W | |
| Wireless charging | 5W | 0W | |
| Main camera | 12 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 13, up to 3 major Android upgrades | Android 16 | |
| Brightness (peak) | 1400 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 170.8×74.0×7.0 mm | 157.5×75.3×8.0 mm | |
| Weight | 184 g | 206 g | |
| Price | $648 | $401 |
Motorola Razr 40 Ultra
- Main: 12MP f/f/1.5
- Ultrawide: 13MP
- Front: 32MP
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Motorola Razr 40 Ultra
- 6.9" Foldable LTPO AMOLED
- Resolution: 1080x2640
- Refresh rate: 165 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Motorola Razr 40 Ultra
- 3800 mAh
- Wired: 30W
- Wireless: 5W
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
We compared Motorola Razr 40 Ultra and Redmi K90, covering their specs and all relevant benchmarks.
Redmi K90 leads Motorola Razr 40 Ultra by 53.8% in our overall performance rating.
Price difference: $247. Redmi K90 is cheaper by $247.
performance
In the "performance" category, the Redmi K90 significantly outperforms the Motorola Razr 40 Ultra (69/100 vs 22/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Redmi K90 significantly outperforms the Motorola Razr 40 Ultra (53/100 vs 14/100).
battery
In the "battery" category, the Redmi K90 significantly outperforms the Motorola Razr 40 Ultra (71/100 vs 10/100).
design
In the "design" category, the Motorola Razr 40 Ultra notably outperforms the Redmi K90 (70/100 vs 42/100).
value for money
In the "value for money" category, the Redmi K90 notably outperforms the Motorola Razr 40 Ultra (82/100 vs 65/100).
Which is better: the Motorola Razr 40 Ultra or the Redmi K90?
The Redmi K90 significantly outperforms the Motorola Razr 40 Ultra by 36 points (68/100 vs 32/100).
What is the rating of the Motorola Razr 40 Ultra and the Redmi K90?
The Motorola Razr 40 Ultra has a MobileRank rating of 32/100, the Redmi K90 — 68/100.
Which has the better camera: the Motorola Razr 40 Ultra or the Redmi K90?
The Redmi K90 leads on camera score (53/100 vs 14/100).
Which is more powerful: the Motorola Razr 40 Ultra or the Redmi K90?
The Redmi K90 leads on performance (69/100 vs 22/100).
Should you choose the Motorola Razr 40 Ultra over the Redmi K90?
The Motorola Razr 40 Ultra is a better fit for everyday use. The Redmi K90 is a better fit for active users, budget-conscious buyers.