OnePlus Ace 6 vs Redmi K40
The OnePlus Ace 6 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Redmi K40 (2021) runs on the Qualcomm Snapdragon 870; estimated prices are $399 and $309. By overall MobileRank rating, the OnePlus Ace 6 leads — 65/100 vs 34/100 (a 31-point difference). Key differences: the OnePlus Ace 6 has the bigger battery (7800 mAh vs 4520); the main camera is 50 MP vs 48 MP; the OnePlus Ace 6 is faster in AnTuTu (3,391,399 vs 1,010,069); the Redmi K40 is noticeably lighter (196g vs 213g).
OnePlus Ace 6
Redmi K40
- Higher AnTuTu: 3391399 vs 1010069
- Better Geekbench Single: 3050 vs 1298
- Better Geekbench Multi: 9300 vs 3520
- Bigger battery: 7800 vs 4520 mAh
- Faster charging: 120W vs 33W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (73/100 vs 8/100)
- Longer battery life (79/100 vs 28/100)
- Lighter: 196g vs 213g
- Cheaper: $309 vs $399
- Better design/ergonomics (55/100 vs 33/100)
- Better value for money (89/100 vs 82/100)
Comparing the OnePlus Ace 6 vs the Redmi K40, the OnePlus Ace 6 scores 31 points higher (65/100 vs 34/100). In the "performance" category, the OnePlus Ace 6 leads (73/100 vs 8/100). In the "battery" category, the OnePlus Ace 6 leads (79/100 vs 28/100). In the "performance" category, the OnePlus Ace 6 significantly outperforms the Redmi K40 (73/100 vs 8/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, both devices are on the same level — 31/100. In the "battery" category, the OnePlus Ace 6 significantly outperforms the Redmi K40 (79/100 vs 28/100). In the "design" category, the Redmi K40 notably outperforms the OnePlus Ace 6 (55/100 vs 33/100). In the "value for money" category, the Redmi K40 is a bit better (89/100 vs 82/100).
| Specification | OnePlus Ace 6 | Redmi K40 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 870 | |
| AnTuTu | 3391399 | 1010069 | |
| Geekbench Single | 3050 | 1298 | |
| Geekbench Multi | 9300 | 3520 | |
| Display | 6.8" OLED | 6.7" AMOLED | |
| Resolution | 2800x1272 | 2400x1080 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 7800 mAh | 4520 mAh | |
| Charging | 120W | 33W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB / 12GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 15 | Android 11 | |
| Brightness (peak) | 1800 nits | — | |
| NFC | yes | — | |
| Protection | IP68 | — | |
| Dimensions | 163.4×77.0×8.3 mm | — | |
| Weight | 213 g | 196 g | |
| Price | $399 | $309 |
OnePlus Ace 6
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi K40
- Main: 48MP f/1.79
- Ultrawide: 8MP
- Front: 20MP
OnePlus Ace 6
- 6.8" OLED
- Resolution: 2800x1272
- Refresh rate: 165 Hz
Redmi K40
- 6.7" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
OnePlus Ace 6
- 7800 mAh
- Wired: 120W
- No wireless charging
Redmi K40
- 4520 mAh
- Wired: 33W
- No wireless charging
We compared OnePlus Ace 6 and Redmi K40, covering their specs and all relevant benchmarks.
OnePlus Ace 6 leads Redmi K40 by 235.8% in our overall performance rating.
Price difference: $90. Redmi K40 is cheaper by $90.
performance
In the "performance" category, the OnePlus Ace 6 significantly outperforms the Redmi K40 (73/100 vs 8/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, both devices are on the same level — 31/100.
battery
In the "battery" category, the OnePlus Ace 6 significantly outperforms the Redmi K40 (79/100 vs 28/100).
design
In the "design" category, the Redmi K40 notably outperforms the OnePlus Ace 6 (55/100 vs 33/100).
value for money
In the "value for money" category, the Redmi K40 is a bit better (89/100 vs 82/100).
Which is better: the OnePlus Ace 6 or the Redmi K40?
The OnePlus Ace 6 significantly outperforms the Redmi K40 by 31 points (65/100 vs 34/100).
What is the rating of the OnePlus Ace 6 and the Redmi K40?
The OnePlus Ace 6 has a MobileRank rating of 65/100, the Redmi K40 — 34/100.
Which is more powerful: the OnePlus Ace 6 or the Redmi K40?
The OnePlus Ace 6 leads on performance (73/100 vs 8/100).
Should you choose the OnePlus Ace 6 over the Redmi K40?
The OnePlus Ace 6 is a better fit for active users, those who care about battery life, budget-conscious buyers. The Redmi K40 is a better fit for budget-conscious buyers.