OnePlus Ace 6 Ultra vs Vivo X300 Pro
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Vivo X300 Pro (2025) runs on the Dimensity 9500; launch prices were $555 and $899. By overall MobileRank rating, the Vivo X300 Pro leads — 88/100 vs 74/100 (a 14-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 6510); the main camera is 50 MP vs 200 MP; the Vivo X300 Pro is faster in AnTuTu (3,587,829 vs 3,429,868).
Profile comparison
Category scores
OnePlus Ace 6 Ultra
Vivo X300 Pro
What makes OnePlus Ace 6 Ultra better?
- Bigger battery: 8600 vs 6510 mAh
- Faster charging: 120W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 217g vs 226g
- Cheaper at launch: $555 vs $899
- Longer battery life (82/100 vs 81/100)
- Better display (94/100 vs 84/100)
What makes Vivo X300 Pro better?
- Higher AnTuTu: 3587829 vs 3429868
- Better main camera: 200MP vs 50MP
- Higher performance (95/100 vs 94/100)
- Better camera (96/100 vs 35/100)
Comparison verdict
Comparing the OnePlus Ace 6 Ultra vs the Vivo X300 Pro, the Vivo X300 Pro scores 14 points higher (88/100 vs 74/100). In the "camera" category, the Vivo X300 Pro leads (96/100 vs 35/100). Value score: OnePlus Ace 6 Ultra — 66/100, Vivo X300 Pro — 88/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Vivo X300 Pro and the OnePlus Ace 6 Ultra are nearly equal (95/100 vs 94/100). 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 Pro significantly outperforms the OnePlus Ace 6 Ultra (96/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra and the Vivo X300 Pro are nearly equal (82/100 vs 81/100). In the "portability" category, both devices are on the same level — 43/100.
Specs comparison
| Specification | OnePlus Ace 6 Ultra | Vivo X300 Pro | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Dimensity 9500 | |
| AnTuTu | 3429868 | 3587829 | |
| Geekbench Single | 3352 | 3352 | |
| Geekbench Multi | 10402 | 10402 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1272x2772 | 1260x2800 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 6510 mAh | |
| Charging | 120W | 90W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 171 | |
| Main camera | 50 MP | 200 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 / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 1800 nits | 4500 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP68 | |
| Dimensions | 162.5×77.5×8.5 mm | 161.2×75.5×8.0 mm | |
| Weight | 217 g | 226 g | |
| Launch price | $555 | $899 |
Camera comparison
OnePlus Ace 6 Ultra
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Vivo X300 Pro
- Main: 200MP f/1.57
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Vivo X300 Pro
- 6.8" AMOLED
- Resolution: 1260x2800
- Refresh rate: 120 Hz
Battery and charging
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Vivo X300 Pro
- 6510 mAh
- NanoReview test: web browsing 13:30 hrs, total 24:37 hrs
- Wired: 90W
- Wireless: 40W
Overall performance score
We compared OnePlus Ace 6 Ultra and Vivo X300 Pro, covering their specs and all relevant benchmarks.
Vivo X300 Pro leads OnePlus Ace 6 Ultra by 4.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $344. OnePlus Ace 6 Ultra was $344 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Pro and the OnePlus Ace 6 Ultra are nearly equal (95/100 vs 94/100).
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 Pro significantly outperforms the OnePlus Ace 6 Ultra (96/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra and the Vivo X300 Pro are nearly equal (82/100 vs 81/100).
portability
In the "portability" category, both devices are on the same level — 43/100.
Frequently asked questions
Which is better: the OnePlus Ace 6 Ultra or the Vivo X300 Pro?
The Vivo X300 Pro is noticeably better than the OnePlus Ace 6 Ultra — the overall rating gap is 14 points.
What is the rating of the OnePlus Ace 6 Ultra and the Vivo X300 Pro?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Vivo X300 Pro — 88/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Vivo X300 Pro?
The Vivo X300 Pro leads on camera score (96/100 vs 35/100).
Should you choose the OnePlus Ace 6 Ultra over the Vivo X300 Pro?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life. The Vivo X300 Pro is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.