OnePlus Ace 5 Ultra vs Redmi K90 Ultra
The OnePlus Ace 5 Ultra (2025) runs on the MediaTek Dimensity 9400+, 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 71/100 (a 2-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6700); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 2,948,304); the OnePlus Ace 5 Ultra is noticeably lighter (206g vs 227g).
Profile comparison
Category scores
OnePlus Ace 5 Ultra
Redmi K90 Ultra
What makes OnePlus Ace 5 Ultra better?
- Lighter: 206g vs 227g
- Cheaper at launch: $350 vs $420
- Better portability (54/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 2948304
- Better Geekbench Single: 3013 vs 2729
- Better Geekbench Multi: 9287 vs 8430
- Bigger battery: 8550 vs 6700 mAh
- Higher refresh rate: 165Hz vs 144Hz
- Higher performance (92/100 vs 89/100)
- Better camera (37/100 vs 35/100)
- Longer battery life (78/100 vs 70/100)
Comparison verdict
Comparing the OnePlus Ace 5 Ultra vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 2 points higher (73/100 vs 71/100). Value score: OnePlus Ace 5 Ultra — 76/100, 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 and the OnePlus Ace 5 Ultra are nearly equal (92/100 vs 89/100). 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 5 Ultra are nearly equal (37/100 vs 35/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 70/100). In the "portability" category, the OnePlus Ace 5 Ultra is a bit better (54/100 vs 40/100).
Specs comparison
| Specification | OnePlus Ace 5 Ultra | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9400+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2948304 | 3233695 | |
| Geekbench Single | 2729 | 3013 | |
| Geekbench Multi | 8430 | 9287 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1272x2800 | 1280x2772 | |
| Refresh rate | 144 Hz | 165 Hz | |
| Battery | 6700 mAh | 8550 mAh | |
| Charging | 100W | 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, ColorOS 15 | Android 16 | |
| Brightness (peak) | 1400 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP65 | IP68/IP69 | |
| Dimensions | 163.4×77.0×8.1 mm | 162.9×77.9×8.2 mm | |
| Weight | 206 g | 227 g | |
| Launch price | $350 | $420 |
Camera comparison
OnePlus Ace 5 Ultra
- 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 5 Ultra
- 6.8" AMOLED
- Resolution: 1272x2800
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
OnePlus Ace 5 Ultra
- 6700 mAh
- Wired: 100W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared OnePlus Ace 5 Ultra and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads OnePlus Ace 5 Ultra by 8.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $70. OnePlus Ace 5 Ultra was $70 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra and the OnePlus Ace 5 Ultra are nearly equal (92/100 vs 89/100).
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 5 Ultra are nearly equal (37/100 vs 35/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 70/100).
portability
In the "portability" category, the OnePlus Ace 5 Ultra is a bit better (54/100 vs 40/100).
Frequently asked questions
Which is better: the OnePlus Ace 5 Ultra or the Redmi K90 Ultra?
The Redmi K90 Ultra edges out the OnePlus Ace 5 Ultra by just 2 points — the two devices are very close in overall level.
What is the rating of the OnePlus Ace 5 Ultra and the Redmi K90 Ultra?
The OnePlus Ace 5 Ultra has a MobileRank rating of 71/100, the Redmi K90 Ultra — 73/100.
Should you choose the OnePlus Ace 5 Ultra over the Redmi K90 Ultra?
The OnePlus Ace 5 Ultra is a better fit for gamers and power users, budget-conscious buyers. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.