Oppo Find X8s vs Redmi K90 Ultra
The Oppo Find X8s (2025) runs on the MediaTek Dimensity 9400+, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $699 and $420. By overall MobileRank rating, the Oppo Find X8s leads — 82/100 vs 73/100 (a 9-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5700); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 3,001,855); the Oppo Find X8s is noticeably lighter (179g vs 227g).
Profile comparison
Category scores
Oppo Find X8s
Redmi K90 Ultra
What makes Oppo Find X8s better?
- Lighter: 179g vs 227g
- Better camera (78/100 vs 37/100)
- Better portability (75/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 3001855
- Better Geekbench Single: 3013 vs 2729
- Better Geekbench Multi: 9287 vs 8430
- Bigger battery: 8550 vs 5700 mAh
- Faster charging: 100W vs 80W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $420 vs $699
- Higher performance (92/100 vs 89/100)
- Longer battery life (78/100 vs 77/100)
- Better display (94/100 vs 85/100)
Comparison verdict
Comparing the Oppo Find X8s vs the Redmi K90 Ultra, the Oppo Find X8s scores 9 points higher (82/100 vs 73/100). In the "camera" category, the Oppo Find X8s leads (78/100 vs 37/100). Value score: Oppo Find X8s — 78/100, Redmi K90 Ultra — 72/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Redmi K90 Ultra and the Oppo Find X8s are nearly equal (92/100 vs 89/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100). In the "camera" category, the Oppo Find X8s significantly outperforms the Redmi K90 Ultra (78/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra and the Oppo Find X8s are nearly equal (78/100 vs 77/100). In the "portability" category, the Oppo Find X8s significantly outperforms the Redmi K90 Ultra (75/100 vs 40/100).
Specs comparison
| Specification | Oppo Find X8s | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9400+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3001855 | 3233695 | |
| Geekbench Single | 2729 | 3013 | |
| Geekbench Multi | 8430 | 9287 | |
| Display | 6.3" AMOLED | 6.8" AMOLED | |
| Resolution | 1216x2640 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 5700 mAh | 8550 mAh | |
| Charging | 80W | 100W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 8 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 15, ColorOS 15 | Android 16 | |
| Brightness (peak) | 1600 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 150.6×71.8×7.7 mm | 162.9×77.9×8.2 mm | |
| Weight | 179 g | 227 g | |
| Launch price | $699 | $420 |
Camera comparison
Oppo Find X8s
- Main: 50MP f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Oppo Find X8s
- 6.3" AMOLED
- Resolution: 1216x2640
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Oppo Find X8s
- 5700 mAh
- Wired: 80W
- Wireless: 50W
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Oppo Find X8s and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Oppo Find X8s by 7.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $279. Redmi K90 Ultra was $279 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra and the Oppo Find X8s are nearly equal (92/100 vs 89/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100).
camera
In the "camera" category, the Oppo Find X8s significantly outperforms the Redmi K90 Ultra (78/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra and the Oppo Find X8s are nearly equal (78/100 vs 77/100).
portability
In the "portability" category, the Oppo Find X8s significantly outperforms the Redmi K90 Ultra (75/100 vs 40/100).
Frequently asked questions
Which is better: the Oppo Find X8s or the Redmi K90 Ultra?
The Oppo Find X8s edges out the Redmi K90 Ultra by just 9 points — the two devices are very close in overall level.
What is the rating of the Oppo Find X8s and the Redmi K90 Ultra?
The Oppo Find X8s has a MobileRank rating of 82/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Oppo Find X8s or the Redmi K90 Ultra?
The Oppo Find X8s leads on camera score (78/100 vs 37/100).
Should you choose the Oppo Find X8s over the Redmi K90 Ultra?
The Oppo Find X8s is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.