OnePlus Ace 6 Ultra vs Vivo X300
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Vivo X300 (2024) runs on the MediaTek Dimensity 9300; launch prices were $555 and $499. By overall MobileRank rating, the Vivo X300 leads — 78/100 vs 74/100 (a 4-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 5000); the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 2,960,147).
OnePlus Ace 6 Ultra
Vivo X300
- Higher AnTuTu: 3429868 vs 2960147
- Better Geekbench Single: 3228 vs 2142
- Better Geekbench Multi: 9553 vs 7125
- Bigger battery: 8600 vs 5000 mAh
- Faster charging: 120W vs 80W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (93/100 vs 85/100)
- Longer battery life (82/100 vs 69/100)
- Better display (94/100 vs 84/100)
- Lighter: 206g vs 217g
- Cheaper at launch: $499 vs $555
- Better camera (78/100 vs 35/100)
- Better portability (55/100 vs 43/100)
Comparing the OnePlus Ace 6 Ultra vs the Vivo X300, the Vivo X300 scores 4 points higher (78/100 vs 74/100). In the "camera" category, the Vivo X300 leads (78/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 69/100). Value score: OnePlus Ace 6 Ultra — 66/100, Vivo X300 — 82/100; 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 is a bit better (93/100 vs 85/100). In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 84/100). In the "camera" category, the Vivo X300 significantly outperforms the OnePlus Ace 6 Ultra (78/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra is a bit better (82/100 vs 69/100). In the "portability" category, the Vivo X300 is a bit better (55/100 vs 43/100).
| Specification | OnePlus Ace 6 Ultra | Vivo X300 | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | MediaTek Dimensity 9300 | |
| AnTuTu | 3429868 | 2960147 | |
| Geekbench Single | 3228 | 2142 | |
| Geekbench Multi | 9553 | 7125 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1272x2772 | 2800x1260 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 5000 mAh | |
| Charging | 120W | 80W | |
| Wireless charging | 0W | 40W | |
| 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 | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 16 | Android 14 | |
| Brightness (peak) | 1800 nits | 4500 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP68 | |
| Dimensions | 162.5×77.5×8.5 mm | 150.6×71.9×8.0 mm | |
| Weight | 217 g | 206 g | |
| Launch price | $555 | $499 |
OnePlus Ace 6 Ultra
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Vivo X300
- Main: 50MP f/f/1.57
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Vivo X300
- 6.8" AMOLED
- Resolution: 2800x1260
- Refresh rate: 120 Hz
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Vivo X300
- 5000 mAh
- Wired: 80W
- Wireless: 40W
We compared OnePlus Ace 6 Ultra and Vivo X300, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Vivo X300 by 15.9% in our overall performance rating.
Launch price difference: $56. Vivo X300 was $56 cheaper at launch.
performance
In the "performance" category, the OnePlus Ace 6 Ultra is a bit better (93/100 vs 85/100).
display
In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 84/100).
camera
In the "camera" category, the Vivo X300 significantly outperforms the OnePlus Ace 6 Ultra (78/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra is a bit better (82/100 vs 69/100).
portability
In the "portability" category, the Vivo X300 is a bit better (55/100 vs 43/100).
Which is better: the OnePlus Ace 6 Ultra or the Vivo X300?
The Vivo X300 edges out the OnePlus Ace 6 Ultra by just 4 points — the two devices are very close in overall level.
What is the rating of the OnePlus Ace 6 Ultra and the Vivo X300?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Vivo X300 — 78/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Vivo X300?
The Vivo X300 leads on camera score (78/100 vs 35/100).
Which is more powerful: the OnePlus Ace 6 Ultra or the Vivo X300?
The OnePlus Ace 6 Ultra leads on performance (93/100 vs 85/100).
Should you choose the OnePlus Ace 6 Ultra over the Vivo X300?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life. The Vivo X300 is a better fit for gamers and power users, budget-conscious buyers.