Realme X3 vs Redmi K90
The Realme X3 (2020) runs on the Qualcomm Snapdragon 855+, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $450 and $401. By overall MobileRank rating, the Redmi K90 leads — 68/100 vs 33/100 (a 35-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 4200); the main camera is 64 MP vs 50 MP; the Redmi K90 is faster in AnTuTu (3,088,357 vs 859,084); the Redmi K90 has NFC for contactless payments, the Realme X3 doesn't.
Realme X3
Redmi K90
- Better main camera: 64MP vs 50MP
- Lighter: 202g vs 206g
- Better design/ergonomics (47/100 vs 42/100)
- Higher AnTuTu: 3088357 vs 859084
- Better Geekbench Single: 3050 vs 1031
- Better Geekbench Multi: 9300 vs 2864
- Bigger battery: 7100 vs 4200 mAh
- Faster charging: 100W vs 30W
- Cheaper: $401 vs $450
- Higher performance (69/100 vs 2/100)
- Better camera (53/100 vs 45/100)
- Longer battery life (71/100 vs 19/100)
- Better value for money (82/100 vs 79/100)
Comparing the Realme X3 vs the Redmi K90, the Redmi K90 scores 35 points higher (68/100 vs 33/100). In the "performance" category, the Redmi K90 leads (69/100 vs 2/100). In the "battery" category, the Redmi K90 leads (71/100 vs 19/100). In the "performance" category, the Redmi K90 significantly outperforms the Realme X3 (69/100 vs 2/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Redmi K90 is a bit better (53/100 vs 45/100). In the "battery" category, the Redmi K90 significantly outperforms the Realme X3 (71/100 vs 19/100). In the "design" category, the Realme X3 is a bit better (47/100 vs 42/100). In the "value for money" category, the Redmi K90 and the Realme X3 are nearly equal (82/100 vs 79/100).
| Specification | Realme X3 | Redmi K90 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 859084 | 3088357 | |
| Geekbench Single | 1031 | 3050 | |
| Geekbench Multi | 2864 | 9300 | |
| Display | 6.0" IPS LCD | 6.6" AMOLED | |
| Resolution | 1080x2400 | 2510x1156 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4200 mAh | 7100 mAh | |
| Charging | 30W | 100W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Telephoto | 12 MP | 50 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB | |
| OS | Android 10, Realme UI | Android 16 | |
| Brightness (peak) | — | 3500 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 163.8×75.8×8.9 mm | 157.5×75.3×8.0 mm | |
| Weight | 202 g | 206 g | |
| Price | $450 | $401 |
Realme X3
- Main: 64MP f/f/1.8
- Ultrawide: 8MP
- Telephoto: 12MP
- Front: 16MP
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Realme X3
- 6.0" IPS LCD
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Realme X3
- 4200 mAh
- Wired: 30W
- No wireless charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
We compared Realme X3 and Redmi K90, covering their specs and all relevant benchmarks.
Redmi K90 leads Realme X3 by 72.2% in our overall performance rating.
Price difference: $49. Redmi K90 is cheaper by $49.
performance
In the "performance" category, the Redmi K90 significantly outperforms the Realme X3 (69/100 vs 2/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Redmi K90 is a bit better (53/100 vs 45/100).
battery
In the "battery" category, the Redmi K90 significantly outperforms the Realme X3 (71/100 vs 19/100).
design
In the "design" category, the Realme X3 is a bit better (47/100 vs 42/100).
value for money
In the "value for money" category, the Redmi K90 and the Realme X3 are nearly equal (82/100 vs 79/100).
Which is better: the Realme X3 or the Redmi K90?
The Redmi K90 significantly outperforms the Realme X3 by 35 points (68/100 vs 33/100).
What is the rating of the Realme X3 and the Redmi K90?
The Realme X3 has a MobileRank rating of 33/100, the Redmi K90 — 68/100.
Which has the better camera: the Realme X3 or the Redmi K90?
The Redmi K90 leads on camera score (53/100 vs 45/100).
Which is more powerful: the Realme X3 or the Redmi K90?
The Redmi K90 leads on performance (69/100 vs 2/100).
Should you choose the Realme X3 over the Redmi K90?
The Realme X3 is a better fit for budget-conscious buyers. The Redmi K90 is a better fit for active users, budget-conscious buyers.