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 (3,119,308 vs 1,394,716); the OPPO Reno 15 is noticeably lighter (186g vs 227g).
OPPO Reno 15
Redmi K90 Ultra
- Lighter: 186g vs 227g
- Cheaper at launch: $350 vs $420
- Better camera (40/100 vs 37/100)
- Better portability (73/100 vs 40/100)
- Higher AnTuTu: 3119308 vs 1394716
- Better Geekbench Single: 3041 vs 1270
- Better Geekbench Multi: 9494 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)
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 — 66/100, Redmi K90 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. 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).
| Specification | OPPO Reno 15 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 7 Gen 4 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1394716 | 3119308 | |
| Geekbench Single | 1270 | 3041 | |
| Geekbench Multi | 4106 | 9494 | |
| 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 |
OPPO Reno 15
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
OPPO Reno 15
- 6.7" AMOLED
- Resolution: 2412x1080
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
OPPO Reno 15
- 6500 mAh
- Wired: 80W
- Wireless charging: no data
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared OPPO Reno 15 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads OPPO Reno 15 by 55.3% in our overall performance rating.
Launch price difference: $70. OPPO Reno 15 was $70 cheaper at launch.
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).
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, budget-conscious buyers.