OnePlus Ace 6 vs Redmi K90 Ultra
The OnePlus Ace 6 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $399 and $420. Both devices score the same overall rating of 73/100. Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 7800); the OnePlus Ace 6 is faster in AnTuTu (3,332,530 vs 3,233,695).
Profile comparison
Category scores
OnePlus Ace 6
Redmi K90 Ultra
What makes OnePlus Ace 6 better?
- Higher AnTuTu: 3332530 vs 3233695
- Faster charging: 120W vs 100W
- Lighter: 213g vs 227g
- Cheaper at launch: $399 vs $420
- Longer battery life (79/100 vs 78/100)
- Better portability (48/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Bigger battery: 8550 vs 7800 mAh
- Better camera (37/100 vs 35/100)
Comparison verdict
The OnePlus Ace 6 and the Redmi K90 Ultra received the same MobileRank rating — 73/100. Value score: OnePlus Ace 6 — 74/100, 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, both devices are on the same level — 92/100. In the "display" category, both devices are on the same level — 94/100. In the "camera" category, the Redmi K90 Ultra and the OnePlus Ace 6 are nearly equal (37/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 and the Redmi K90 Ultra are nearly equal (79/100 vs 78/100). In the "portability" category, the OnePlus Ace 6 is a bit better (48/100 vs 40/100).
Specs comparison
| Specification | OnePlus Ace 6 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3332530 | 3233695 | |
| Geekbench Single | 3013 | 3013 | |
| Geekbench Multi | 9287 | 9287 | |
| Display | 6.8" OLED | 6.8" AMOLED | |
| Resolution | 2800x1272 | 1280x2772 | |
| Refresh rate | 165 Hz | 165 Hz | |
| Battery | 7800 mAh | 8550 mAh | |
| Charging | 120W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 15 | Android 16 | |
| Brightness (peak) | 1800 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 163.4×77.0×8.3 mm | 162.9×77.9×8.2 mm | |
| Weight | 213 g | 227 g | |
| Launch price | $399 | $420 |
Camera comparison
OnePlus Ace 6
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
OnePlus Ace 6
- 6.8" OLED
- Resolution: 2800x1272
- Refresh rate: 165 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
OnePlus Ace 6
- 7800 mAh
- Wired: 120W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared OnePlus Ace 6 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
OnePlus Ace 6 leads Redmi K90 Ultra by 3.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $21. OnePlus Ace 6 was $21 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, both devices are on the same level — 92/100.
display
In the "display" category, both devices are on the same level — 94/100.
camera
In the "camera" category, the Redmi K90 Ultra and the OnePlus Ace 6 are nearly equal (37/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 and the Redmi K90 Ultra are nearly equal (79/100 vs 78/100).
portability
In the "portability" category, the OnePlus Ace 6 is a bit better (48/100 vs 40/100).
Frequently asked questions
Which is better: the OnePlus Ace 6 or the Redmi K90 Ultra?
Both devices scored 73/100. They are identical on performance — 92/100 for both. The clearest difference is portability: better on the OnePlus Ace 6 (48/100 vs 40/100).
What is the rating of the OnePlus Ace 6 and the Redmi K90 Ultra?
The OnePlus Ace 6 has a MobileRank rating of 73/100, the Redmi K90 Ultra — 73/100.
Should you choose the OnePlus Ace 6 over the Redmi K90 Ultra?
The OnePlus Ace 6 is a better fit for gamers and power 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.