OnePlus 15 vs Redmi K40
The OnePlus 15 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Redmi K40 (2021) runs on the Qualcomm Snapdragon 870; estimated prices are $799 and $309. By overall MobileRank rating, the OnePlus 15 leads — 61/100 vs 34/100 (a 27-point difference). Key differences: the OnePlus 15 has the bigger battery (6500 mAh vs 4520); the main camera is 50 MP vs 48 MP; the OnePlus 15 is faster in AnTuTu (3,621,671 vs 1,010,069); the Redmi K40 is noticeably lighter (196g vs 213g).
OnePlus 15
Redmi K40
- Higher AnTuTu: 3621671 vs 1010069
- Better Geekbench Single: 3050 vs 1298
- Better Geekbench Multi: 9300 vs 3520
- Bigger battery: 6500 vs 4520 mAh
- Better main camera: 50MP vs 48MP
- Higher performance (77/100 vs 8/100)
- Better camera (34/100 vs 31/100)
- Longer battery life (48/100 vs 28/100)
- Lighter: 196g vs 213g
- Cheaper: $309 vs $799
- Better design/ergonomics (55/100 vs 33/100)
- Better value for money (89/100 vs 55/100)
Comparing the OnePlus 15 vs the Redmi K40, the OnePlus 15 scores 27 points higher (61/100 vs 34/100). In the "performance" category, the OnePlus 15 leads (77/100 vs 8/100). In the "battery" category, the OnePlus 15 leads (48/100 vs 28/100). In the "value for money" category, the Redmi K40 leads (89/100 vs 55/100). In the "performance" category, the OnePlus 15 significantly outperforms the Redmi K40 (77/100 vs 8/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the OnePlus 15 and the Redmi K40 are nearly equal (34/100 vs 31/100). In the "battery" category, the OnePlus 15 notably outperforms the Redmi K40 (48/100 vs 28/100). In the "design" category, the Redmi K40 notably outperforms the OnePlus 15 (55/100 vs 33/100). In the "value for money" category, the Redmi K40 significantly outperforms the OnePlus 15 (89/100 vs 55/100).
| Specification | OnePlus 15 | Redmi K40 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 870 | |
| AnTuTu | 3621671 | 1010069 | |
| Geekbench Single | 3050 | 1298 | |
| Geekbench Multi | 9300 | 3520 | |
| Display | 6.8" AMOLED | 6.7" AMOLED | |
| Resolution | — | 2400x1080 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6500 mAh | 4520 mAh | |
| Charging | — | 33W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB / 12GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | — | Android 11 | |
| Brightness (peak) | 1800 nits | — | |
| NFC | yes | — | |
| Protection | IP68 | — | |
| Dimensions | 161.4×76.7×8.1 mm | — | |
| Weight | 213 g | 196 g | |
| Price | $799 | $309 |
OnePlus 15
- Main: 50MP
- Front: 32MP
Redmi K40
- Main: 48MP f/1.79
- Ultrawide: 8MP
- Front: 20MP
OnePlus 15
- 6.8" AMOLED
- Refresh rate: 120 Hz
Redmi K40
- 6.7" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
OnePlus 15
- 6500 mAh
- No wireless charging
Redmi K40
- 4520 mAh
- Wired: 33W
- No wireless charging
We compared OnePlus 15 and Redmi K40, covering their specs and all relevant benchmarks.
OnePlus 15 leads Redmi K40 by 258.6% in our overall performance rating.
Price difference: $490. Redmi K40 is cheaper by $490.
performance
In the "performance" category, the OnePlus 15 significantly outperforms the Redmi K40 (77/100 vs 8/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the OnePlus 15 and the Redmi K40 are nearly equal (34/100 vs 31/100).
battery
In the "battery" category, the OnePlus 15 notably outperforms the Redmi K40 (48/100 vs 28/100).
design
In the "design" category, the Redmi K40 notably outperforms the OnePlus 15 (55/100 vs 33/100).
value for money
In the "value for money" category, the Redmi K40 significantly outperforms the OnePlus 15 (89/100 vs 55/100).
Which is better: the OnePlus 15 or the Redmi K40?
The OnePlus 15 significantly outperforms the Redmi K40 by 27 points (61/100 vs 34/100).
What is the rating of the OnePlus 15 and the Redmi K40?
The OnePlus 15 has a MobileRank rating of 61/100, the Redmi K40 — 34/100.
Which is more powerful: the OnePlus 15 or the Redmi K40?
The OnePlus 15 leads on performance (77/100 vs 8/100).
Should you choose the OnePlus 15 over the Redmi K40?
The OnePlus 15 is a better fit for active users. The Redmi K40 is a better fit for budget-conscious buyers.