OnePlus Ace 6 Ultra vs Xiaomi 12
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Xiaomi 12 (2022) runs on the Qualcomm Snapdragon 8 Gen 1; launch prices were $555 and $750. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 74/100 vs 64/100 (a 10-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 4500); the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 1,322,176); the Xiaomi 12 is noticeably lighter (180g vs 217g).
OnePlus Ace 6 Ultra
Xiaomi 12
- Higher AnTuTu: 3429868 vs 1322176
- Better Geekbench Single: 3228 vs 1675
- Better Geekbench Multi: 9553 vs 4453
- Bigger battery: 8600 vs 4500 mAh
- Faster charging: 120W vs 67W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $555 vs $750
- Higher performance (93/100 vs 69/100)
- Longer battery life (82/100 vs 57/100)
- Better display (94/100 vs 82/100)
- Lighter: 180g vs 217g
- Better camera (52/100 vs 35/100)
- Better portability (69/100 vs 43/100)
Comparing the OnePlus Ace 6 Ultra vs the Xiaomi 12, the OnePlus Ace 6 Ultra scores 10 points higher (74/100 vs 64/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (93/100 vs 69/100). In the "camera" category, the Xiaomi 12 leads (52/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 57/100). Value score: OnePlus Ace 6 Ultra — 66/100, Xiaomi 12 — 40/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the OnePlus Ace 6 Ultra notably outperforms the Xiaomi 12 (93/100 vs 69/100). In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 82/100). In the "camera" category, the Xiaomi 12 notably outperforms the OnePlus Ace 6 Ultra (52/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Xiaomi 12 (82/100 vs 57/100). In the "portability" category, the Xiaomi 12 notably outperforms the OnePlus Ace 6 Ultra (69/100 vs 43/100).
| Specification | OnePlus Ace 6 Ultra | Xiaomi 12 | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 8 Gen 1 | |
| AnTuTu | 3429868 | 1322176 | |
| Geekbench Single | 3228 | 1675 | |
| Geekbench Multi | 9553 | 4453 | |
| Display | 6.8" AMOLED | 6.3" AMOLED | |
| Resolution | 1272x2772 | 2400x1080 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 4500 mAh | |
| Charging | 120W | 67W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 113 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 13 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB / 16GB | 8GB / 12GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 12 | |
| Brightness (peak) | 1800 nits | 1100 nits | |
| NFC | yes | yes | |
| Protection | IP66 | — | |
| Dimensions | 162.5×77.5×8.5 mm | 152.7×69.9×8.2 mm | |
| Weight | 217 g | 180 g | |
| Launch price | $555 | $750 |
OnePlus Ace 6 Ultra
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi 12
- Main: 50MP f/1.88
- Ultrawide: 13MP
- Front: 32MP
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Xiaomi 12
- 6.3" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Xiaomi 12
- 4500 mAh
- Wired: 67W
- Wireless: 50W
We compared OnePlus Ace 6 Ultra and Xiaomi 12, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Xiaomi 12 by 159.4% in our overall performance rating.
Launch price difference: $195. OnePlus Ace 6 Ultra was $195 cheaper at launch.
performance
In the "performance" category, the OnePlus Ace 6 Ultra notably outperforms the Xiaomi 12 (93/100 vs 69/100).
display
In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 82/100).
camera
In the "camera" category, the Xiaomi 12 notably outperforms the OnePlus Ace 6 Ultra (52/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Xiaomi 12 (82/100 vs 57/100).
portability
In the "portability" category, the Xiaomi 12 notably outperforms the OnePlus Ace 6 Ultra (69/100 vs 43/100).
Which is better: the OnePlus Ace 6 Ultra or the Xiaomi 12?
The OnePlus Ace 6 Ultra is noticeably better than the Xiaomi 12 — the overall rating gap is 10 points.
What is the rating of the OnePlus Ace 6 Ultra and the Xiaomi 12?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Xiaomi 12 — 64/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Xiaomi 12?
The Xiaomi 12 leads on camera score (52/100 vs 35/100).
Which is more powerful: the OnePlus Ace 6 Ultra or the Xiaomi 12?
The OnePlus Ace 6 Ultra leads on performance (93/100 vs 69/100).
Should you choose the OnePlus Ace 6 Ultra over the Xiaomi 12?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life. The Xiaomi 12 is a better fit for active users.