OPPO Find X8 Ultra vs Redmi K90 Ultra
The OPPO Find X8 Ultra (2025) runs on the Snapdragon 8 Elite, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $999 and $420. By overall MobileRank rating, the OPPO Find X8 Ultra leads — 86/100 vs 73/100 (a 13-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6100); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 3,183,101).
Profile comparison
Category scores
OPPO Find X8 Ultra
Redmi K90 Ultra
What makes OPPO Find X8 Ultra better?
- Lighter: 226g vs 227g
- Better camera (94/100 vs 37/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 3183101
- Bigger battery: 8550 vs 6100 mAh
- Faster charging: 100W vs 80W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $420 vs $999
- Higher performance (92/100 vs 91/100)
- Better display (94/100 vs 89/100)
- Better portability (40/100 vs 35/100)
Comparison verdict
Comparing the OPPO Find X8 Ultra vs the Redmi K90 Ultra, the OPPO Find X8 Ultra scores 13 points higher (86/100 vs 73/100). In the "camera" category, the OPPO Find X8 Ultra leads (94/100 vs 37/100). Value score: OPPO Find X8 Ultra — 82/100, 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 X8 Ultra are nearly equal (92/100 vs 91/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 89/100). In the "camera" category, the OPPO Find X8 Ultra significantly outperforms the Redmi K90 Ultra (94/100 vs 37/100). In the "battery" category, both devices are on the same level — 78/100. In the "portability" category, the Redmi K90 Ultra is a bit better (40/100 vs 35/100).
Specs comparison
| Specification | OPPO Find X8 Ultra | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3183101 | 3233695 | |
| Geekbench Single | 3013 | 3013 | |
| Geekbench Multi | 9287 | 9287 | |
| Display | 6.8" LTPO AMOLED | 6.8" AMOLED | |
| Resolution | 3168x1440 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 6100 mAh | 8550 mAh | |
| Charging | 80W | 100W | |
| Wireless charging | 50W | 0W | |
| DXOMark (camera) | 168 | — | |
| 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 | Android 16 | |
| Brightness (peak) | 2500 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 163.1×76.8×8.8 mm | 162.9×77.9×8.2 mm | |
| Weight | 226 g | 227 g | |
| Launch price | $999 | $420 |
Camera comparison
OPPO Find X8 Ultra
- 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 X8 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
OPPO Find X8 Ultra
- 6100 mAh
- NanoReview test: web browsing 13:45 hrs, total 28:25 hrs
- Wired: 80W
- Wireless: 50W
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared OPPO Find X8 Ultra and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads OPPO Find X8 Ultra by 1.6% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $579. Redmi K90 Ultra was $579 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra and the OPPO Find X8 Ultra are nearly equal (92/100 vs 91/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 89/100).
camera
In the "camera" category, the OPPO Find X8 Ultra significantly outperforms the Redmi K90 Ultra (94/100 vs 37/100).
battery
In the "battery" category, both devices are on the same level — 78/100.
portability
In the "portability" category, the Redmi K90 Ultra is a bit better (40/100 vs 35/100).
Frequently asked questions
Which is better: the OPPO Find X8 Ultra or the Redmi K90 Ultra?
The OPPO Find X8 Ultra is noticeably better than the Redmi K90 Ultra — the overall rating gap is 13 points.
What is the rating of the OPPO Find X8 Ultra and the Redmi K90 Ultra?
The OPPO Find X8 Ultra has a MobileRank rating of 86/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the OPPO Find X8 Ultra or the Redmi K90 Ultra?
The OPPO Find X8 Ultra leads on camera score (94/100 vs 37/100).
Should you choose the OPPO Find X8 Ultra over the Redmi K90 Ultra?
The OPPO Find X8 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, 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.