OnePlus Ace 6 Ultra vs Samsung Galaxy A51
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Samsung Galaxy A51 (2020) runs on the Exynos 9611; estimated prices are $555 and $399. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 66/100 vs 18/100 (a 48-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 4000); the main camera is 50 MP vs 48 MP; the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 355,351); the Samsung Galaxy A51 is noticeably lighter (172g vs 217g).
OnePlus Ace 6 Ultra
Samsung Galaxy A51
- Higher AnTuTu: 3429868 vs 355351
- Better Geekbench Single: 3228 vs 365
- Better Geekbench Multi: 9553 vs 1107
- Bigger battery: 8600 vs 4000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 165Hz vs 60Hz
- Higher performance (76/100 vs 0/100)
- Longer battery life (82/100 vs 12/100)
- Better display (100/100 vs 0/100)
- Lighter: 172g vs 217g
- Cheaper: $399 vs $555
- Better camera (32/100 vs 31/100)
- Better design/ergonomics (85/100 vs 28/100)
- Better value for money (82/100 vs 72/100)
Comparing the OnePlus Ace 6 Ultra vs the Samsung Galaxy A51, the OnePlus Ace 6 Ultra scores 48 points higher (66/100 vs 18/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (76/100 vs 0/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 12/100). In the "value for money" category, the Samsung Galaxy A51 leads (82/100 vs 72/100). In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Samsung Galaxy A51 (76/100 vs 0/100). In the "display" category, the OnePlus Ace 6 Ultra significantly outperforms the Samsung Galaxy A51 (100/100 vs 0/100). In the "camera" category, the Samsung Galaxy A51 and the OnePlus Ace 6 Ultra are nearly equal (32/100 vs 31/100). In the "battery" category, the OnePlus Ace 6 Ultra significantly outperforms the Samsung Galaxy A51 (82/100 vs 12/100). In the "design" category, the Samsung Galaxy A51 significantly outperforms the OnePlus Ace 6 Ultra (85/100 vs 28/100). In the "value for money" category, the Samsung Galaxy A51 is a bit better (82/100 vs 72/100).
| Specification | OnePlus Ace 6 Ultra | Samsung Galaxy A51 | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Exynos 9611 | |
| AnTuTu | 3429868 | 355351 | |
| Geekbench Single | 3228 | 365 | |
| Geekbench Multi | 9553 | 1107 | |
| Display | 6.8" AMOLED | 6.5" AMOLED | |
| Resolution | 1272x2772 | — | |
| Refresh rate | 165 Hz | 60 Hz | |
| Battery | 8600 mAh | 4000 mAh | |
| Charging | 120W | — | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB / 16GB | 4GB / 6GB | |
| Storage | 256GB / 512GB / 1TB | 64GB / 128GB | |
| OS | Android 16 | — | |
| Brightness (peak) | 1800 nits | — | |
| NFC | yes | yes | |
| Protection | IP66 | — | |
| Dimensions | 162.5×77.5×8.5 mm | 158.5×73.6×7.9 mm | |
| Weight | 217 g | 172 g | |
| Price | $555 | $399 |
OnePlus Ace 6 Ultra
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Samsung Galaxy A51
- Main: 48MP
- Front: 32MP
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Samsung Galaxy A51
- 6.5" AMOLED
- Refresh rate: 60 Hz
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Samsung Galaxy A51
- 4000 mAh
- No wireless charging
We compared OnePlus Ace 6 Ultra and Samsung Galaxy A51, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Samsung Galaxy A51 by 865.2% in our overall performance rating.
Price difference: $156. Samsung Galaxy A51 is cheaper by $156.
performance
In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Samsung Galaxy A51 (76/100 vs 0/100).
display
In the "display" category, the OnePlus Ace 6 Ultra significantly outperforms the Samsung Galaxy A51 (100/100 vs 0/100).
camera
In the "camera" category, the Samsung Galaxy A51 and the OnePlus Ace 6 Ultra are nearly equal (32/100 vs 31/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra significantly outperforms the Samsung Galaxy A51 (82/100 vs 12/100).
design
In the "design" category, the Samsung Galaxy A51 significantly outperforms the OnePlus Ace 6 Ultra (85/100 vs 28/100).
value for money
In the "value for money" category, the Samsung Galaxy A51 is a bit better (82/100 vs 72/100).
Which is better: the OnePlus Ace 6 Ultra or the Samsung Galaxy A51?
The OnePlus Ace 6 Ultra significantly outperforms the Samsung Galaxy A51 by 48 points (66/100 vs 18/100).
What is the rating of the OnePlus Ace 6 Ultra and the Samsung Galaxy A51?
The OnePlus Ace 6 Ultra has a MobileRank rating of 66/100, the Samsung Galaxy A51 — 18/100.
Which is more powerful: the OnePlus Ace 6 Ultra or the Samsung Galaxy A51?
The OnePlus Ace 6 Ultra leads on performance (76/100 vs 0/100).
Should you choose the OnePlus Ace 6 Ultra over the Samsung Galaxy A51?
The OnePlus Ace 6 Ultra is a better fit for active users, those who care about battery life. The Samsung Galaxy A51 is a better fit for budget-conscious buyers.