OnePlus Ace 6 Ultra vs Oppo K12
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Oppo K12 (2024) runs on the Qualcomm Snapdragon 7 Gen 3. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 74/100 vs 57/100 (a 17-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 5500); the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 1,025,251); the Oppo K12 is noticeably lighter (186g vs 217g).
OnePlus Ace 6 Ultra
Oppo K12
- Higher AnTuTu: 3429868 vs 1025251
- Better Geekbench Single: 3228 vs 1131
- Better Geekbench Multi: 9553 vs 2967
- Bigger battery: 8600 vs 5500 mAh
- Faster charging: 120W vs 100W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (93/100 vs 58/100)
- Longer battery life (82/100 vs 66/100)
- Better display (94/100 vs 80/100)
- Lighter: 186g vs 217g
- Better portability (63/100 vs 43/100)
Comparing the OnePlus Ace 6 Ultra vs the Oppo K12, the OnePlus Ace 6 Ultra scores 17 points higher (74/100 vs 57/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (93/100 vs 58/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 66/100). In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Oppo K12 (93/100 vs 58/100). In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 80/100). In the "camera" category, both devices are on the same level — 35/100. In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Oppo K12 (82/100 vs 66/100). In the "portability" category, the Oppo K12 notably outperforms the OnePlus Ace 6 Ultra (63/100 vs 43/100).
| Specification | OnePlus Ace 6 Ultra | Oppo K12 | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 7 Gen 3 | |
| AnTuTu | 3429868 | 1025251 | |
| Geekbench Single | 3228 | 1131 | |
| Geekbench Multi | 9553 | 2967 | |
| Display | 6.8" AMOLED | 6.7" AMOLED | |
| Resolution | 1272x2772 | 1080x2412 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 5500 mAh | |
| Charging | 120W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 16 MP | 16 MP | |
| RAM | 12GB / 16GB | 8GB / 12GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 16 | Android 14, ColorOS 14 | |
| Brightness (peak) | 1800 nits | 1100 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP54 | |
| Dimensions | 162.5×77.5×8.5 mm | 162.5×75.3×8.4 mm | |
| Weight | 217 g | 186 g | |
| Launch price | $555 | — |
OnePlus Ace 6 Ultra
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Oppo K12
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Oppo K12
- 6.7" AMOLED
- Resolution: 1080x2412
- Refresh rate: 120 Hz
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Oppo K12
- 5500 mAh
- Wired: 100W
- No wireless charging
We compared OnePlus Ace 6 Ultra and Oppo K12, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Oppo K12 by 234.5% in our overall performance rating.
Oppo K12
Price unknownperformance
In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Oppo K12 (93/100 vs 58/100).
display
In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 80/100).
camera
In the "camera" category, both devices are on the same level — 35/100.
battery
In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Oppo K12 (82/100 vs 66/100).
portability
In the "portability" category, the Oppo K12 notably outperforms the OnePlus Ace 6 Ultra (63/100 vs 43/100).
Which is better: the OnePlus Ace 6 Ultra or the Oppo K12?
The OnePlus Ace 6 Ultra is noticeably better than the Oppo K12 — the overall rating gap is 17 points.
What is the rating of the OnePlus Ace 6 Ultra and the Oppo K12?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Oppo K12 — 57/100.
Which is more powerful: the OnePlus Ace 6 Ultra or the Oppo K12?
The OnePlus Ace 6 Ultra leads on performance (93/100 vs 58/100).
Should you choose the OnePlus Ace 6 Ultra over the Oppo K12?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life. The Oppo K12 is a better fit for everyday use.