Redmi Note 8 vs Xiaomi 15 Ultra
The Redmi Note 8 (2019) runs on the Qualcomm Snapdragon 665, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $180 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 30/100 (a 55-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 4000); the main camera is 48 MP vs 50 MP; the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 329,457); the Xiaomi 15 Ultra has NFC for contactless payments, the Redmi Note 8 doesn't; the Redmi Note 8 is noticeably lighter (190g vs 225g).
Redmi Note 8
Xiaomi 15 Ultra
- Lighter: 190g vs 225g
- Cheaper at launch: $180 vs $999
- Better portability (60/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 329457
- Better Geekbench Single: 3050 vs 321
- Better Geekbench Multi: 10200 vs 1128
- Bigger battery: 6000 vs 4000 mAh
- Faster charging: 90W vs 18W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (92/100 vs 24/100)
- Better camera (87/100 vs 33/100)
- Longer battery life (80/100 vs 22/100)
- Better display (90/100 vs 43/100)
Comparing the Redmi Note 8 vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 55 points higher (85/100 vs 30/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 24/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 33/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 22/100). Value score: Redmi Note 8 — 28/100, Xiaomi 15 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 (92/100 vs 24/100). In the "display" category, the Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 (90/100 vs 43/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 (87/100 vs 33/100). In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 (80/100 vs 22/100). In the "portability" category, the Redmi Note 8 significantly outperforms the Xiaomi 15 Ultra (60/100 vs 29/100).
| Specification | Redmi Note 8 | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 665 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 329457 | 3030376 | |
| Geekbench Single | 321 | 3050 | |
| Geekbench Multi | 1128 | 10200 | |
| Display | 6.3" IPS LCD | 6.7" LTPO AMOLED | |
| Resolution | 2340x1080 | 3200x1440 | |
| Refresh rate | 60 Hz | 120 Hz | |
| Battery | 4000 mAh | 6000 mAh | |
| Charging | 18W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 13 MP | 32 MP | |
| RAM | 3GB / 4GB / 6GB | 16GB | |
| Storage | 32GB / 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | Android 9 | Android 15 / HyperOS 2 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 158.3×75.3×8.4 mm | 161.3×75.3×9.4 mm | |
| Weight | 190 g | 225 g | |
| Launch price | $180 | $999 |
Redmi Note 8
- Main: 48MP f/1.8
- Ultrawide: 8MP
- Front: 13MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi Note 8
- 6.3" IPS LCD
- Resolution: 2340x1080
- Refresh rate: 60 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Redmi Note 8
- 4000 mAh
- Wired: 18W
- No wireless charging
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared Redmi Note 8 and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Redmi Note 8 by 89.1% in our overall performance rating.
Launch price difference: $819. Redmi Note 8 was $819 cheaper at launch.
performance
In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 (92/100 vs 24/100).
display
In the "display" category, the Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 (90/100 vs 43/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 (87/100 vs 33/100).
battery
In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 (80/100 vs 22/100).
portability
In the "portability" category, the Redmi Note 8 significantly outperforms the Xiaomi 15 Ultra (60/100 vs 29/100).
Which is better: the Redmi Note 8 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the Redmi Note 8 by 55 points (85/100 vs 30/100).
What is the rating of the Redmi Note 8 and the Xiaomi 15 Ultra?
The Redmi Note 8 has a MobileRank rating of 30/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Redmi Note 8 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 33/100).
Which is more powerful: the Redmi Note 8 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 24/100).
Should you choose the Redmi Note 8 over the Xiaomi 15 Ultra?
The Redmi Note 8 is a better fit for everyday use. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.