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 OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 3,326,259).
Profile comparison
Category scores
OnePlus Ace 6 Ultra
Vivo X300 Pro
What makes OnePlus Ace 6 Ultra better?
- Higher AnTuTu: 3429868 vs 3326259
- 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?
- Better main camera: 200MP vs 50MP
- 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, both devices are on the same level — 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 | 3326259 | |
| Geekbench Single | 3293 | 3293 | |
| Geekbench Multi | 10243 | 10243 | |
| 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.
OnePlus Ace 6 Ultra leads Vivo X300 Pro by 3.1% 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, both devices are on the same level — 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.