OPPO Reno 15 vs Redmi K90 Ultra
The OPPO Reno 15 (2026) runs on the Qualcomm Snapdragon 7 Gen 4, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $350 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 63/100 (a 10-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6500); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 1,394,716); the OPPO Reno 15 is noticeably lighter (186g vs 227g).
Profile comparison
Category scores
OPPO Reno 15
Redmi K90 Ultra
What makes OPPO Reno 15 better?
- Lighter: 186g vs 227g
- Cheaper at launch: $350 vs $420
- Better camera (40/100 vs 37/100)
- Better portability (73/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 1394716
- Better Geekbench Single: 3013 vs 1270
- Better Geekbench Multi: 9287 vs 4106
- Bigger battery: 8550 vs 6500 mAh
- Faster charging: 100W vs 80W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 66/100)
- Better display (94/100 vs 80/100)
Comparison verdict
Comparing the OPPO Reno 15 vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 10 points higher (73/100 vs 63/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 66/100). Value score: OPPO Reno 15 — 60/100, 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 notably outperforms the OPPO Reno 15 (92/100 vs 66/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 80/100). In the "camera" category, the OPPO Reno 15 and the Redmi K90 Ultra are nearly equal (40/100 vs 37/100). In the "battery" category, both devices are on the same level — 78/100. In the "portability" category, the OPPO Reno 15 significantly outperforms the Redmi K90 Ultra (73/100 vs 40/100).
Specs comparison
| Specification | OPPO Reno 15 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 7 Gen 4 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1394716 | 3233695 | |
| Geekbench Single | 1270 | 3013 | |
| Geekbench Multi | 4106 | 9287 | |
| Display | 6.7" AMOLED | 6.8" AMOLED | |
| Resolution | 2412x1080 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 6500 mAh | 8550 mAh | |
| Charging | 80W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 15 | Android 16 | |
| Brightness (peak) | — | 3500 nits | |
| NFC | — | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | — | 162.9×77.9×8.2 mm | |
| Weight | 186 g | 227 g | |
| Launch price | $350 | $420 |
Camera comparison
OPPO Reno 15
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
OPPO Reno 15
- 6.7" AMOLED
- Resolution: 2412x1080
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
OPPO Reno 15
- 6500 mAh
- Wired: 80W
- Wireless charging: no data
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared OPPO Reno 15 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads OPPO Reno 15 by 56.9% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $70. OPPO Reno 15 was $70 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra notably outperforms the OPPO Reno 15 (92/100 vs 66/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 80/100).
camera
In the "camera" category, the OPPO Reno 15 and the Redmi K90 Ultra are nearly equal (40/100 vs 37/100).
battery
In the "battery" category, both devices are on the same level — 78/100.
portability
In the "portability" category, the OPPO Reno 15 significantly outperforms the Redmi K90 Ultra (73/100 vs 40/100).
Frequently asked questions
Which is better: the OPPO Reno 15 or the Redmi K90 Ultra?
The Redmi K90 Ultra is noticeably better than the OPPO Reno 15 — the overall rating gap is 10 points.
What is the rating of the OPPO Reno 15 and the Redmi K90 Ultra?
The OPPO Reno 15 has a MobileRank rating of 63/100, the Redmi K90 Ultra — 73/100.
Which is more powerful: the OPPO Reno 15 or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 66/100).
Should you choose the OPPO Reno 15 over the Redmi K90 Ultra?
The OPPO Reno 15 is a better fit for active users, those who care about battery life. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.