OPPO Find X8 Ultra vs Redmi K90
The OPPO Find X8 Ultra (2025) runs on the Snapdragon 8 Elite, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $999 and $401. By overall MobileRank rating, the OPPO Find X8 Ultra leads — 86/100 vs 76/100 (a 10-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 6100); the OPPO Find X8 Ultra is faster in AnTuTu (3,183,101 vs 3,077,585); the Redmi K90 is noticeably lighter (206g vs 226g).
Profile comparison
Category scores
OPPO Find X8 Ultra
Redmi K90
What makes OPPO Find X8 Ultra better?
- Higher AnTuTu: 3183101 vs 3077585
- Better camera (94/100 vs 58/100)
- Longer battery life (78/100 vs 72/100)
- Better display (89/100 vs 82/100)
What makes Redmi K90 better?
- Bigger battery: 7100 vs 6100 mAh
- Faster charging: 100W vs 80W
- Lighter: 206g vs 226g
- Cheaper at launch: $401 vs $999
- Better portability (55/100 vs 35/100)
Comparison verdict
Comparing the OPPO Find X8 Ultra vs the Redmi K90, the OPPO Find X8 Ultra scores 10 points higher (86/100 vs 76/100). In the "camera" category, the OPPO Find X8 Ultra leads (94/100 vs 58/100). Value score: OPPO Find X8 Ultra — 82/100, Redmi K90 — 80/100; 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, both devices are on the same level — 91/100. In the "display" category, the OPPO Find X8 Ultra is a bit better (89/100 vs 82/100). In the "camera" category, the OPPO Find X8 Ultra significantly outperforms the Redmi K90 (94/100 vs 58/100). In the "battery" category, the OPPO Find X8 Ultra is a bit better (78/100 vs 72/100). In the "portability" category, the Redmi K90 notably outperforms the OPPO Find X8 Ultra (55/100 vs 35/100).
Specs comparison
| Specification | OPPO Find X8 Ultra | Redmi K90 | |
|---|---|---|---|
| Processor | Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3183101 | 3077585 | |
| Geekbench Single | 3013 | 3013 | |
| Geekbench Multi | 9287 | 9287 | |
| Display | 6.8" LTPO AMOLED | 6.6" AMOLED | |
| Resolution | 3168x1440 | 2510x1156 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6100 mAh | 7100 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 | 50 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 | |
| Dimensions | 163.1×76.8×8.8 mm | 157.5×75.3×8.0 mm | |
| Weight | 226 g | 206 g | |
| Launch price | $999 | $401 |
Camera comparison
OPPO Find X8 Ultra
- Main: 50MP f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Display comparison
OPPO Find X8 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 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
- 7100 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared OPPO Find X8 Ultra and Redmi K90, covering their specs and all relevant benchmarks.
OPPO Find X8 Ultra leads Redmi K90 by 3.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $598. Redmi K90 was $598 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, both devices are on the same level — 91/100.
display
In the "display" category, the OPPO Find X8 Ultra is a bit better (89/100 vs 82/100).
camera
In the "camera" category, the OPPO Find X8 Ultra significantly outperforms the Redmi K90 (94/100 vs 58/100).
battery
In the "battery" category, the OPPO Find X8 Ultra is a bit better (78/100 vs 72/100).
portability
In the "portability" category, the Redmi K90 notably outperforms the OPPO Find X8 Ultra (55/100 vs 35/100).
Frequently asked questions
Which is better: the OPPO Find X8 Ultra or the Redmi K90?
The OPPO Find X8 Ultra is noticeably better than the Redmi K90 — the overall rating gap is 10 points.
What is the rating of the OPPO Find X8 Ultra and the Redmi K90?
The OPPO Find X8 Ultra has a MobileRank rating of 86/100, the Redmi K90 — 76/100.
Which has the better camera: the OPPO Find X8 Ultra or the Redmi K90?
The OPPO Find X8 Ultra leads on camera score (94/100 vs 58/100).
Should you choose the OPPO Find X8 Ultra over the Redmi K90?
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 is a better fit for gamers and power users, budget-conscious buyers.