OnePlus Ace 3 vs Xiaomi 15 Ultra
The OnePlus Ace 3 (2024) runs on the Qualcomm Snapdragon 8 Gen 2, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 64/100 (a 21-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 5500); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 1,907,512); the OnePlus Ace 3 is noticeably lighter (207g vs 225g).
OnePlus Ace 3
Xiaomi 15 Ultra
- Faster charging: 100W vs 90W
- Lighter: 207g vs 225g
- Better portability (46/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 1907512
- Better Geekbench Single: 3050 vs 2004
- Better Geekbench Multi: 10200 vs 5311
- Bigger battery: 6000 vs 5500 mAh
- Higher performance (92/100 vs 77/100)
- Better camera (87/100 vs 35/100)
- Longer battery life (80/100 vs 66/100)
- Better display (90/100 vs 84/100)
Comparing the OnePlus Ace 3 vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 21 points higher (85/100 vs 64/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 77/100). 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 66/100). In the "performance" category, the Xiaomi 15 Ultra notably outperforms the OnePlus Ace 3 (92/100 vs 77/100). In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 84/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OnePlus Ace 3 (87/100 vs 35/100). In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 66/100). In the "portability" category, the OnePlus Ace 3 notably outperforms the Xiaomi 15 Ultra (46/100 vs 29/100).
| Specification | OnePlus Ace 3 | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Gen 2 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1907512 | 3030376 | |
| Geekbench Single | 2004 | 3050 | |
| Geekbench Multi | 5311 | 10200 | |
| Display | 6.8" LTPO AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1264x2780 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5500 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 14, ColorOS 14 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 4500 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 163.3×75.3×8.8 mm | 161.3×75.3×9.4 mm | |
| Weight | 207 g | 225 g | |
| Launch price | — | $999 |
OnePlus Ace 3
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
OnePlus Ace 3
- 6.8" LTPO AMOLED
- Resolution: 1264x2780
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
OnePlus Ace 3
- 5500 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
We compared OnePlus Ace 3 and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads OnePlus Ace 3 by 37.1% in our overall performance rating.
OnePlus Ace 3
Price unknownperformance
In the "performance" category, the Xiaomi 15 Ultra notably outperforms the OnePlus Ace 3 (92/100 vs 77/100).
display
In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 84/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OnePlus Ace 3 (87/100 vs 35/100).
battery
In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 66/100).
portability
In the "portability" category, the OnePlus Ace 3 notably outperforms the Xiaomi 15 Ultra (46/100 vs 29/100).
Which is better: the OnePlus Ace 3 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the OnePlus Ace 3 by 21 points (85/100 vs 64/100).
What is the rating of the OnePlus Ace 3 and the Xiaomi 15 Ultra?
The OnePlus Ace 3 has a MobileRank rating of 64/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the OnePlus Ace 3 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 35/100).
Which is more powerful: the OnePlus Ace 3 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 77/100).
Should you choose the OnePlus Ace 3 over the Xiaomi 15 Ultra?
The OnePlus Ace 3 is a better fit for active users. 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.