Redmi A3X vs Redmi K90
The Redmi A3X (2025) runs on the MediaTek Helio G36, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $80 and $401. By overall MobileRank rating, the Redmi K90 leads — 68/100 vs 13/100 (a 55-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5000); the main camera is 8 MP vs 50 MP; the Redmi K90 is faster in AnTuTu (3,088,357 vs 195,539); the Redmi K90 has NFC for contactless payments, the Redmi A3X doesn't.
Redmi A3X
Redmi K90
- Lighter: 192g vs 206g
- Cheaper: $80 vs $401
- Better design/ergonomics (60/100 vs 42/100)
- Better value for money (100/100 vs 82/100)
- Higher AnTuTu: 3088357 vs 195539
- Better Geekbench Single: 3050 vs 189
- Better Geekbench Multi: 9300 vs 781
- Bigger battery: 7100 vs 5000 mAh
- Faster charging: 100W vs 10W
- Better main camera: 50MP vs 8MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (69/100 vs 0/100)
- Better camera (53/100 vs 0/100)
- Longer battery life (71/100 vs 36/100)
- Better display (100/100 vs 0/100)
Comparing the Redmi A3X vs the Redmi K90, the Redmi K90 scores 55 points higher (68/100 vs 13/100). In the "performance" category, the Redmi K90 leads (69/100 vs 0/100). In the "camera" category, the Redmi K90 leads (53/100 vs 0/100). In the "battery" category, the Redmi K90 leads (71/100 vs 36/100). In the "value for money" category, the Redmi A3X leads (100/100 vs 82/100). In the "performance" category, the Redmi K90 significantly outperforms the Redmi A3X (69/100 vs 0/100). In the "display" category, the Redmi K90 significantly outperforms the Redmi A3X (100/100 vs 0/100). In the "camera" category, the Redmi K90 significantly outperforms the Redmi A3X (53/100 vs 0/100). In the "battery" category, the Redmi K90 significantly outperforms the Redmi A3X (71/100 vs 36/100). In the "design" category, the Redmi A3X notably outperforms the Redmi K90 (60/100 vs 42/100). In the "value for money" category, the Redmi A3X notably outperforms the Redmi K90 (100/100 vs 82/100).
| Specification | Redmi A3X | Redmi K90 | |
|---|---|---|---|
| Processor | MediaTek Helio G36 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 195539 | 3088357 | |
| Geekbench Single | 189 | 3050 | |
| Geekbench Multi | 781 | 9300 | |
| Display | 6.7" IPS LCD | 6.6" AMOLED | |
| Resolution | 720x1650 | 2510x1156 | |
| Refresh rate | 60 Hz | 120 Hz | |
| Battery | 5000 mAh | 7100 mAh | |
| Charging | 10W | 100W | |
| Main camera | 8 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 5 MP | 20 MP | |
| RAM | 2GB / 3GB | 12GB / 16GB | |
| Storage | 32GB / 64GB | 256GB / 512GB | |
| OS | Android 14, up to 2 major Android upgrades, MIUI | Android 16 | |
| Brightness (peak) | 500 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 168.4×76.3×8.3 mm | 157.5×75.3×8.0 mm | |
| Weight | 192 g | 206 g | |
| Price | $80 | $401 |
Redmi A3X
- Main: 8MP
- Front: 5MP
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Redmi A3X
- 6.7" IPS LCD
- Resolution: 720x1650
- Refresh rate: 60 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Redmi A3X
- 5000 mAh
- Wired: 10W
- No wireless charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
We compared Redmi A3X and Redmi K90, covering their specs and all relevant benchmarks.
Redmi K90 leads Redmi A3X by 93.7% in our overall performance rating.
Price difference: $321. Redmi A3X is cheaper by $321.
performance
In the "performance" category, the Redmi K90 significantly outperforms the Redmi A3X (69/100 vs 0/100).
display
In the "display" category, the Redmi K90 significantly outperforms the Redmi A3X (100/100 vs 0/100).
camera
In the "camera" category, the Redmi K90 significantly outperforms the Redmi A3X (53/100 vs 0/100).
battery
In the "battery" category, the Redmi K90 significantly outperforms the Redmi A3X (71/100 vs 36/100).
design
In the "design" category, the Redmi A3X notably outperforms the Redmi K90 (60/100 vs 42/100).
value for money
In the "value for money" category, the Redmi A3X notably outperforms the Redmi K90 (100/100 vs 82/100).
Which is better: the Redmi A3X or the Redmi K90?
The Redmi K90 significantly outperforms the Redmi A3X by 55 points (68/100 vs 13/100).
What is the rating of the Redmi A3X and the Redmi K90?
The Redmi A3X has a MobileRank rating of 13/100, the Redmi K90 — 68/100.
Which has the better camera: the Redmi A3X or the Redmi K90?
The Redmi K90 leads on camera score (53/100 vs 0/100).
Which is more powerful: the Redmi A3X or the Redmi K90?
The Redmi K90 leads on performance (69/100 vs 0/100).
Should you choose the Redmi A3X over the Redmi K90?
The Redmi A3X is a better fit for budget-conscious buyers. The Redmi K90 is a better fit for active users, budget-conscious buyers.