OnePlus Ace 6 Ultra vs Vivo Y400
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Vivo Y400 (2025) runs on the Qualcomm Snapdragon 4 Gen 2; launch prices were $555 and $230. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 74/100 vs 52/100 (a 22-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 6000); the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 568,395); the Vivo Y400 is noticeably lighter (197g vs 217g).
Profile comparison
Category scores
OnePlus Ace 6 Ultra
Vivo Y400
What makes OnePlus Ace 6 Ultra better?
- Higher AnTuTu: 3429868 vs 568395
- Better Geekbench Single: 3293 vs 915
- Better Geekbench Multi: 10243 vs 2115
- Bigger battery: 8600 vs 6000 mAh
- Faster charging: 120W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (94/100 vs 46/100)
- Longer battery life (82/100 vs 65/100)
- Better display (94/100 vs 79/100)
What makes Vivo Y400 better?
- Lighter: 197g vs 217g
- Cheaper at launch: $230 vs $555
- Better camera (37/100 vs 35/100)
- Better portability (62/100 vs 43/100)
Comparison verdict
Comparing the OnePlus Ace 6 Ultra vs the Vivo Y400, the OnePlus Ace 6 Ultra scores 22 points higher (74/100 vs 52/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (94/100 vs 46/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 65/100). Value score: OnePlus Ace 6 Ultra — 66/100, Vivo Y400 — 58/100; 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 OnePlus Ace 6 Ultra significantly outperforms the Vivo Y400 (94/100 vs 46/100). In the "display" category, the OnePlus Ace 6 Ultra notably outperforms the Vivo Y400 (94/100 vs 79/100). In the "camera" category, the Vivo Y400 and the OnePlus Ace 6 Ultra are nearly equal (37/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Vivo Y400 (82/100 vs 65/100). In the "portability" category, the Vivo Y400 notably outperforms the OnePlus Ace 6 Ultra (62/100 vs 43/100).
Specs comparison
| Specification | OnePlus Ace 6 Ultra | Vivo Y400 | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 4 Gen 2 | |
| AnTuTu | 3429868 | 568395 | |
| Geekbench Single | 3293 | 915 | |
| Geekbench Multi | 10243 | 2115 | |
| Display | 6.8" AMOLED | 6.7" AMOLED | |
| Resolution | 1272x2772 | 1080x2400 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 6000 mAh | |
| Charging | 120W | 90W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 1800 nits | 1800 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP69 | |
| Dimensions | 162.5×77.5×8.5 mm | 162.3×75.3×7.9 mm | |
| Weight | 217 g | 197 g | |
| Launch price | $555 | $230 |
Camera comparison
OnePlus Ace 6 Ultra
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Vivo Y400
- Main: 50MP f/1.8
- Front: 32MP
Display comparison
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Vivo Y400
- 6.7" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Battery and charging
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Vivo Y400
- 6000 mAh
- Wired: 90W
- No wireless charging
Overall performance score
We compared OnePlus Ace 6 Ultra and Vivo Y400, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Vivo Y400 by 503.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $325. Vivo Y400 was $325 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Vivo Y400 (94/100 vs 46/100).
display
In the "display" category, the OnePlus Ace 6 Ultra notably outperforms the Vivo Y400 (94/100 vs 79/100).
camera
In the "camera" category, the Vivo Y400 and the OnePlus Ace 6 Ultra are nearly equal (37/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Vivo Y400 (82/100 vs 65/100).
portability
In the "portability" category, the Vivo Y400 notably outperforms the OnePlus Ace 6 Ultra (62/100 vs 43/100).
Frequently asked questions
Which is better: the OnePlus Ace 6 Ultra or the Vivo Y400?
The OnePlus Ace 6 Ultra significantly outperforms the Vivo Y400 by 22 points (74/100 vs 52/100).
What is the rating of the OnePlus Ace 6 Ultra and the Vivo Y400?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Vivo Y400 — 52/100.
Which is more powerful: the OnePlus Ace 6 Ultra or the Vivo Y400?
The OnePlus Ace 6 Ultra leads on performance (94/100 vs 46/100).
Should you choose the OnePlus Ace 6 Ultra over the Vivo Y400?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life.