OnePlus Ace 5 Ultra vs Xiaomi 15 Ultra
The OnePlus Ace 5 Ultra (2025) runs on the MediaTek Dimensity 9400+, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $350 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 71/100 (a 14-point difference). Key differences: the OnePlus Ace 5 Ultra has the bigger battery (6700 mAh vs 6000); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 2,948,304); the OnePlus Ace 5 Ultra is noticeably lighter (206g vs 225g).
Profile comparison
Category scores
OnePlus Ace 5 Ultra
Xiaomi 15 Ultra
What makes OnePlus Ace 5 Ultra better?
- Bigger battery: 6700 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 206g vs 225g
- Cheaper at launch: $350 vs $999
- Better display (94/100 vs 90/100)
- Better portability (54/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Higher AnTuTu: 3030376 vs 2948304
- Better Geekbench Single: 3050 vs 2729
- Better Geekbench Multi: 10200 vs 8430
- Higher performance (92/100 vs 89/100)
- Better camera (87/100 vs 35/100)
- Longer battery life (80/100 vs 70/100)
Comparison verdict
Comparing the OnePlus Ace 5 Ultra vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 14 points higher (85/100 vs 71/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 35/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 70/100). Value score: OnePlus Ace 5 Ultra — 76/100, Xiaomi 15 Ultra — 80/100; 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 Xiaomi 15 Ultra and the OnePlus Ace 5 Ultra are nearly equal (92/100 vs 89/100). In the "display" category, the OnePlus Ace 5 Ultra and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OnePlus Ace 5 Ultra (87/100 vs 35/100). In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 70/100). In the "portability" category, the OnePlus Ace 5 Ultra notably outperforms the Xiaomi 15 Ultra (54/100 vs 29/100).
Specs comparison
| Specification | OnePlus Ace 5 Ultra | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9400+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2948304 | 3030376 | |
| Geekbench Single | 2729 | 3050 | |
| Geekbench Multi | 8430 | 10200 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1272x2800 | 3200x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 6700 mAh | 6000 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| 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 15, ColorOS 15 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 1400 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP65 | IP68 | |
| Dimensions | 163.4×77.0×8.1 mm | 161.3×75.3×9.4 mm | |
| Weight | 206 g | 225 g | |
| Launch price | $350 | $999 |
Camera comparison
OnePlus Ace 5 Ultra
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
OnePlus Ace 5 Ultra
- 6.8" AMOLED
- Resolution: 1272x2800
- Refresh rate: 144 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
OnePlus Ace 5 Ultra
- 6700 mAh
- Wired: 100W
- No wireless charging
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared OnePlus Ace 5 Ultra and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads OnePlus Ace 5 Ultra by 2.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $649. OnePlus Ace 5 Ultra was $649 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 15 Ultra and the OnePlus Ace 5 Ultra are nearly equal (92/100 vs 89/100).
display
In the "display" category, the OnePlus Ace 5 Ultra and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OnePlus Ace 5 Ultra (87/100 vs 35/100).
battery
In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 70/100).
portability
In the "portability" category, the OnePlus Ace 5 Ultra notably outperforms the Xiaomi 15 Ultra (54/100 vs 29/100).
Frequently asked questions
Which is better: the OnePlus Ace 5 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the OnePlus Ace 5 Ultra — the overall rating gap is 14 points.
What is the rating of the OnePlus Ace 5 Ultra and the Xiaomi 15 Ultra?
The OnePlus Ace 5 Ultra has a MobileRank rating of 71/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the OnePlus Ace 5 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 35/100).
Should you choose the OnePlus Ace 5 Ultra over the Xiaomi 15 Ultra?
The OnePlus Ace 5 Ultra is a better fit for gamers and power users, budget-conscious buyers. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.