OnePlus Ace 6 Ultra vs Redmi K90 Pro Max
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Redmi K90 Pro Max (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $555 and $561. By overall MobileRank rating, the Redmi K90 Pro Max leads — 86/100 vs 74/100 (a 12-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 7560); the Redmi K90 Pro Max is faster in AnTuTu (3,622,315 vs 3,429,868).
Profile comparison
Category scores
OnePlus Ace 6 Ultra
Redmi K90 Pro Max
What makes OnePlus Ace 6 Ultra better?
- Bigger battery: 8600 vs 7560 mAh
- Faster charging: 120W vs 100W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $555 vs $561
- Better display (94/100 vs 81/100)
What makes Redmi K90 Pro Max better?
- Higher AnTuTu: 3622315 vs 3429868
- Better Geekbench Single: 3639 vs 3293
- Better Geekbench Multi: 11047 vs 10243
- Lighter: 210g vs 217g
- Higher performance (97/100 vs 94/100)
- Better camera (78/100 vs 35/100)
- Longer battery life (89/100 vs 82/100)
- Better portability (54/100 vs 43/100)
Comparison verdict
Comparing the OnePlus Ace 6 Ultra vs the Redmi K90 Pro Max, the Redmi K90 Pro Max scores 12 points higher (86/100 vs 74/100). In the "camera" category, the Redmi K90 Pro Max leads (78/100 vs 35/100). Value score: OnePlus Ace 6 Ultra — 66/100, Redmi K90 Pro Max — 90/100; 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 Pro Max and the OnePlus Ace 6 Ultra are nearly equal (97/100 vs 94/100). In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 81/100). In the "camera" category, the Redmi K90 Pro Max significantly outperforms the OnePlus Ace 6 Ultra (78/100 vs 35/100). In the "battery" category, the Redmi K90 Pro Max is a bit better (89/100 vs 82/100). In the "portability" category, the Redmi K90 Pro Max is a bit better (54/100 vs 43/100).
Specs comparison
| Specification | OnePlus Ace 6 Ultra | Redmi K90 Pro Max | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3429868 | 3622315 | |
| Geekbench Single | 3293 | 3639 | |
| Geekbench Multi | 10243 | 11047 | |
| Display | 6.8" AMOLED | 6.9" OLED | |
| Resolution | 1272x2772 | 2608x1200 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 7560 mAh | |
| Charging | 120W | 100W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 1800 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP68 | |
| Dimensions | 162.5×77.5×8.5 mm | 163.3×77.8×7.9 mm | |
| Weight | 217 g | 210 g | |
| Launch price | $555 | $561 |
Camera comparison
OnePlus Ace 6 Ultra
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi K90 Pro Max
- Main: 50MP f/1.88
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Redmi K90 Pro Max
- 6.9" OLED
- Resolution: 2608x1200
- Refresh rate: 120 Hz
Battery and charging
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Redmi K90 Pro Max
- 7560 mAh
- Wired: 100W
- Wireless: 50W
Overall performance score
We compared OnePlus Ace 6 Ultra and Redmi K90 Pro Max, covering their specs and all relevant benchmarks.
Redmi K90 Pro Max leads OnePlus Ace 6 Ultra by 5.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $6. OnePlus Ace 6 Ultra was $6 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Pro Max and the OnePlus Ace 6 Ultra are nearly equal (97/100 vs 94/100).
display
In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 81/100).
camera
In the "camera" category, the Redmi K90 Pro Max significantly outperforms the OnePlus Ace 6 Ultra (78/100 vs 35/100).
battery
In the "battery" category, the Redmi K90 Pro Max is a bit better (89/100 vs 82/100).
portability
In the "portability" category, the Redmi K90 Pro Max is a bit better (54/100 vs 43/100).
Frequently asked questions
Which is better: the OnePlus Ace 6 Ultra or the Redmi K90 Pro Max?
The Redmi K90 Pro Max is noticeably better than the OnePlus Ace 6 Ultra — the overall rating gap is 12 points.
What is the rating of the OnePlus Ace 6 Ultra and the Redmi K90 Pro Max?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Redmi K90 Pro Max — 86/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Redmi K90 Pro Max?
The Redmi K90 Pro Max leads on camera score (78/100 vs 35/100).
Should you choose the OnePlus Ace 6 Ultra over the Redmi K90 Pro Max?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life. The Redmi K90 Pro Max is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.