Redmi K70 Ultra vs Xiaomi 15 Ultra
The Redmi K70 Ultra (2024) runs on the MediaTek Dimensity 9300+, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $375 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 68/100 (a 17-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 5500); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 2,384,849); the Redmi K70 Ultra is thinner (8.4mm vs 9.4mm).
Redmi K70 Ultra
Xiaomi 15 Ultra
- Faster charging: 120W vs 90W
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 213g vs 225g
- Cheaper at launch: $375 vs $999
- Better display (93/100 vs 90/100)
- Better portability (46/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 2384849
- Better Geekbench Single: 3050 vs 2250
- Better Geekbench Multi: 10200 vs 7315
- Bigger battery: 6000 vs 5500 mAh
- Higher performance (92/100 vs 83/100)
- Better camera (87/100 vs 37/100)
- Longer battery life (80/100 vs 70/100)
Comparing the Redmi K70 Ultra vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 17 points higher (85/100 vs 68/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 37/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 70/100). Value score: Redmi K70 Ultra — 74/100, 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 is a bit better (92/100 vs 83/100). In the "display" category, the Redmi K70 Ultra and the Xiaomi 15 Ultra are nearly equal (93/100 vs 90/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi K70 Ultra (87/100 vs 37/100). In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 70/100). In the "portability" category, the Redmi K70 Ultra notably outperforms the Xiaomi 15 Ultra (46/100 vs 29/100).
| Specification | Redmi K70 Ultra | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9300+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2384849 | 3030376 | |
| Geekbench Single | 2250 | 3050 | |
| Geekbench Multi | 7315 | 10200 | |
| Display | 6.7" OLED | 6.7" LTPO AMOLED | |
| Resolution | 1220x2712 | 3200x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 5500 mAh | 6000 mAh | |
| Charging | 120W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB / 24GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 14 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 4000 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 160.4×75.1×8.4 mm | 161.3×75.3×9.4 mm | |
| Weight | 213 g | 225 g | |
| Launch price | $375 | $999 |
Redmi K70 Ultra
- Main: 50MP f/f/1.7
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi K70 Ultra
- 6.7" OLED
- Resolution: 1220x2712
- Refresh rate: 144 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Redmi K70 Ultra
- 5500 mAh
- Wired: 120W
- 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 K70 Ultra and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Redmi K70 Ultra by 21.3% in our overall performance rating.
Launch price difference: $624. Redmi K70 Ultra was $624 cheaper at launch.
performance
In the "performance" category, the Xiaomi 15 Ultra is a bit better (92/100 vs 83/100).
display
In the "display" category, the Redmi K70 Ultra and the Xiaomi 15 Ultra are nearly equal (93/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi K70 Ultra (87/100 vs 37/100).
battery
In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 70/100).
portability
In the "portability" category, the Redmi K70 Ultra notably outperforms the Xiaomi 15 Ultra (46/100 vs 29/100).
Which is better: the Redmi K70 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the Redmi K70 Ultra — the overall rating gap is 17 points.
What is the rating of the Redmi K70 Ultra and the Xiaomi 15 Ultra?
The Redmi K70 Ultra has a MobileRank rating of 68/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Redmi K70 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 37/100).
Which is more powerful: the Redmi K70 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 83/100).
Should you choose the Redmi K70 Ultra over the Xiaomi 15 Ultra?
The Redmi K70 Ultra is a better fit for gamers and power users. 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.