OnePlus Ace 6 Ultra vs Redmi K40 Pro
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Redmi K40 Pro (2021) runs on the Qualcomm Snapdragon 888. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 74/100 vs 56/100 (a 18-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 4520); the main camera is 50 MP vs 64 MP; the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 1,135,878); the Redmi K40 Pro is noticeably lighter (196g vs 217g).
Profile comparison
Category scores
OnePlus Ace 6 Ultra
Redmi K40 Pro
What makes OnePlus Ace 6 Ultra better?
- Higher AnTuTu: 3429868 vs 1135878
- Better Geekbench Single: 3293 vs 1500
- Better Geekbench Multi: 10243 vs 3537
- Bigger battery: 8600 vs 4520 mAh
- Faster charging: 120W vs 33W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (94/100 vs 64/100)
- Longer battery life (82/100 vs 36/100)
- Better display (94/100 vs 79/100)
What makes Redmi K40 Pro better?
- Better main camera: 64MP vs 50MP
- Lighter: 196g vs 217g
- Better camera (44/100 vs 35/100)
- Better portability (64/100 vs 43/100)
Comparison verdict
Comparing the OnePlus Ace 6 Ultra vs the Redmi K40 Pro, the OnePlus Ace 6 Ultra scores 18 points higher (74/100 vs 56/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (94/100 vs 64/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 36/100). In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi K40 Pro (94/100 vs 64/100). In the "display" category, the OnePlus Ace 6 Ultra notably outperforms the Redmi K40 Pro (94/100 vs 79/100). In the "camera" category, the Redmi K40 Pro is a bit better (44/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi K40 Pro (82/100 vs 36/100). In the "portability" category, the Redmi K40 Pro notably outperforms the OnePlus Ace 6 Ultra (64/100 vs 43/100).
Specs comparison
| Specification | OnePlus Ace 6 Ultra | Redmi K40 Pro | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 888 | |
| AnTuTu | 3429868 | 1135878 | |
| Geekbench Single | 3293 | 1500 | |
| Geekbench Multi | 10243 | 3537 | |
| Display | 6.8" AMOLED | 6.7" Super AMOLED | |
| Resolution | 1272x2772 | 1080x2400 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 4520 mAh | |
| Charging | 120W | 33W | |
| Main camera | 50 MP | 64 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 11, MIUI 12 | |
| Brightness (peak) | 1800 nits | 1300 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP53 | |
| Dimensions | 162.5×77.5×8.5 mm | 163.7×76.4×7.8 mm | |
| Weight | 217 g | 196 g | |
| Launch price | $555 | — |
Camera comparison
OnePlus Ace 6 Ultra
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi K40 Pro
- Main: 64MP f/1.9
- Ultrawide: 8MP
- Front: 20MP
Display comparison
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Redmi K40 Pro
- 6.7" Super AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Battery and charging
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Redmi K40 Pro
- 4520 mAh
- Wired: 33W
- No wireless charging
Overall performance score
We compared OnePlus Ace 6 Ultra and Redmi K40 Pro, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Redmi K40 Pro by 202.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Redmi K40 Pro
Price unknownDetailed category analysis
performance
In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi K40 Pro (94/100 vs 64/100).
display
In the "display" category, the OnePlus Ace 6 Ultra notably outperforms the Redmi K40 Pro (94/100 vs 79/100).
camera
In the "camera" category, the Redmi K40 Pro is a bit better (44/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi K40 Pro (82/100 vs 36/100).
portability
In the "portability" category, the Redmi K40 Pro notably outperforms the OnePlus Ace 6 Ultra (64/100 vs 43/100).
Frequently asked questions
Which is better: the OnePlus Ace 6 Ultra or the Redmi K40 Pro?
The OnePlus Ace 6 Ultra is noticeably better than the Redmi K40 Pro — the overall rating gap is 18 points.
What is the rating of the OnePlus Ace 6 Ultra and the Redmi K40 Pro?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Redmi K40 Pro — 56/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Redmi K40 Pro?
The Redmi K40 Pro leads on camera score (44/100 vs 35/100).
Which is more powerful: the OnePlus Ace 6 Ultra or the Redmi K40 Pro?
The OnePlus Ace 6 Ultra leads on performance (94/100 vs 64/100).
Should you choose the OnePlus Ace 6 Ultra over the Redmi K40 Pro?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life. The Redmi K40 Pro is a better fit for active users.