OnePlus 9 vs OnePlus Ace 6 Ultra
The OnePlus 9 (2021) runs on the Qualcomm Snapdragon 888, while the OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500; launch prices were $729 and $555. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 74/100 vs 60/100 (a 14-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 4500); the main camera is 48 MP vs 50 MP; the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 1,135,878); the OnePlus 9 is noticeably lighter (192g vs 217g).
OnePlus 9
OnePlus Ace 6 Ultra
- Lighter: 192g vs 217g
- Better camera (51/100 vs 35/100)
- Better portability (56/100 vs 43/100)
- Higher AnTuTu: 3429868 vs 1135878
- Better Geekbench Single: 3228 vs 1488
- Better Geekbench Multi: 9553 vs 3373
- Bigger battery: 8600 vs 4500 mAh
- Faster charging: 120W vs 65W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $555 vs $729
- Higher performance (93/100 vs 64/100)
- Longer battery life (82/100 vs 50/100)
- Better display (94/100 vs 80/100)
Comparing the OnePlus 9 vs the OnePlus Ace 6 Ultra, the OnePlus Ace 6 Ultra scores 14 points higher (74/100 vs 60/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (93/100 vs 64/100). In the "camera" category, the OnePlus 9 leads (51/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 50/100). Value score: OnePlus 9 — 32/100, OnePlus Ace 6 Ultra — 66/100; 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 OnePlus 9 (93/100 vs 64/100). In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 80/100). In the "camera" category, the OnePlus 9 notably outperforms the OnePlus Ace 6 Ultra (51/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra significantly outperforms the OnePlus 9 (82/100 vs 50/100). In the "portability" category, the OnePlus 9 is a bit better (56/100 vs 43/100).
| Specification | OnePlus 9 | OnePlus Ace 6 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 888 | MediaTek Dimensity 9500 | |
| AnTuTu | 1135878 | 3429868 | |
| Geekbench Single | 1488 | 3228 | |
| Geekbench Multi | 3373 | 9553 | |
| Display | 6.5" AMOLED | 6.8" AMOLED | |
| Resolution | 2400x1080 | 1272x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 4500 mAh | 8600 mAh | |
| Charging | 65W | 120W | |
| Wireless charging | 15W | 0W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 50 MP | 8 MP | |
| Front camera | 16 MP | 16 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 11 | Android 16 | |
| Brightness (peak) | 1100 nits | 1800 nits | |
| NFC | yes | yes | |
| Protection | — | IP66 | |
| Dimensions | 160.0×74.2×8.7 mm | 162.5×77.5×8.5 mm | |
| Weight | 192 g | 217 g | |
| Launch price | $729 | $555 |
OnePlus 9
- Main: 48MP f/1.8
- Ultrawide: 50MP
- Front: 16MP
OnePlus Ace 6 Ultra
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
OnePlus 9
- 6.5" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
OnePlus 9
- 4500 mAh
- Wired: 65W
- Wireless: 15W
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
We compared OnePlus 9 and OnePlus Ace 6 Ultra, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads OnePlus 9 by 66.9% in our overall performance rating.
Launch price difference: $174. OnePlus Ace 6 Ultra was $174 cheaper at launch.
performance
In the "performance" category, the OnePlus Ace 6 Ultra notably outperforms the OnePlus 9 (93/100 vs 64/100).
display
In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 80/100).
camera
In the "camera" category, the OnePlus 9 notably outperforms the OnePlus Ace 6 Ultra (51/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra significantly outperforms the OnePlus 9 (82/100 vs 50/100).
portability
In the "portability" category, the OnePlus 9 is a bit better (56/100 vs 43/100).
Which is better: the OnePlus 9 or the OnePlus Ace 6 Ultra?
The OnePlus Ace 6 Ultra is noticeably better than the OnePlus 9 — the overall rating gap is 14 points.
What is the rating of the OnePlus 9 and the OnePlus Ace 6 Ultra?
The OnePlus 9 has a MobileRank rating of 60/100, the OnePlus Ace 6 Ultra — 74/100.
Which has the better camera: the OnePlus 9 or the OnePlus Ace 6 Ultra?
The OnePlus 9 leads on camera score (51/100 vs 35/100).
Which is more powerful: the OnePlus 9 or the OnePlus Ace 6 Ultra?
The OnePlus Ace 6 Ultra leads on performance (93/100 vs 64/100).
Should you choose the OnePlus 9 over the OnePlus Ace 6 Ultra?
The OnePlus 9 is a better fit for active users. The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life.