Redmi K80 Ultra vs Xiaomi 15 Ultra
The Redmi K80 Ultra (2025) runs on the MediaTek Dimensity 9400+, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $350 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 73/100 (a 12-point difference). Key differences: the Redmi K80 Ultra has the bigger battery (7410 mAh vs 6000); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 2,876,004).
Redmi K80 Ultra
Xiaomi 15 Ultra
- Bigger battery: 7410 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 219g vs 225g
- Cheaper: $350 vs $999
- Longer battery life (86/100 vs 80/100)
- Better display (94/100 vs 90/100)
- Better portability (40/100 vs 29/100)
- Better value for money (86/100 vs 82/100)
- Higher AnTuTu: 3030376 vs 2876004
- Better Geekbench Single: 3050 vs 2729
- Better Geekbench Multi: 10200 vs 8430
- Higher performance (92/100 vs 89/100)
- Better camera (87/100 vs 37/100)
Comparing the Redmi K80 Ultra vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 12 points higher (85/100 vs 73/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 37/100). In the "performance" category, the Xiaomi 15 Ultra and the Redmi K80 Ultra are nearly equal (92/100 vs 89/100). In the "display" category, the Redmi K80 Ultra and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi K80 Ultra (87/100 vs 37/100). In the "battery" category, the Redmi K80 Ultra is a bit better (86/100 vs 80/100). In the "portability" category, the Redmi K80 Ultra is a bit better (40/100 vs 29/100). In the "value for money" category, the Redmi K80 Ultra and the Xiaomi 15 Ultra are nearly equal (86/100 vs 82/100).
| Specification | Redmi K80 Ultra | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9400+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2876004 | 3030376 | |
| Geekbench Single | 2729 | 3050 | |
| Geekbench Multi | 8430 | 10200 | |
| Display | 6.8" OLED | 6.7" LTPO AMOLED | |
| Resolution | 1280x2772 | 3200x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7410 mAh | 6000 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | — | 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 | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 15 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 3200 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | — | 161.3×75.3×9.4 mm | |
| Weight | 219 g | 225 g | |
| Price | $350 | $999 |
Redmi K80 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi K80 Ultra
- 6.8" OLED
- Resolution: 1280x2772
- Refresh rate: 144 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Redmi K80 Ultra
- 7410 mAh
- Wired: 100W
- Wireless charging: no data
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared Redmi K80 Ultra and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Redmi K80 Ultra by 5.1% in our overall performance rating.
Price difference: $649. Redmi K80 Ultra is cheaper by $649.
performance
In the "performance" category, the Xiaomi 15 Ultra and the Redmi K80 Ultra are nearly equal (92/100 vs 89/100).
display
In the "display" category, the Redmi K80 Ultra and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi K80 Ultra (87/100 vs 37/100).
battery
In the "battery" category, the Redmi K80 Ultra is a bit better (86/100 vs 80/100).
portability
In the "portability" category, the Redmi K80 Ultra is a bit better (40/100 vs 29/100).
value for money
In the "value for money" category, the Redmi K80 Ultra and the Xiaomi 15 Ultra are nearly equal (86/100 vs 82/100).
Which is better: the Redmi K80 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the Redmi K80 Ultra — the overall rating gap is 12 points.
What is the rating of the Redmi K80 Ultra and the Xiaomi 15 Ultra?
The Redmi K80 Ultra has a MobileRank rating of 73/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Redmi K80 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 37/100).
Should you choose the Redmi K80 Ultra over the Xiaomi 15 Ultra?
The Redmi K80 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. 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.