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; launch prices were $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 2,874,956).
Profile comparison
Category scores
Redmi K80 Ultra
Xiaomi 15 Ultra
What makes Redmi K80 Ultra better?
- Bigger battery: 7410 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 219g vs 225g
- Cheaper at launch: $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)
What makes Xiaomi 15 Ultra better?
- Higher AnTuTu: 3030376 vs 2874956
- 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)
Comparison verdict
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). Value score: Redmi K80 Ultra — 80/100, Xiaomi 15 Ultra — 80/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. 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).
Specs comparison
| Specification | Redmi K80 Ultra | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9400+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2874956 | 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 | |
| Launch price | $350 | $999 |
Camera comparison
Redmi K80 Ultra
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
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
Battery and charging
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
Overall performance score
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.
Benchmarks
Launch prices and where to check today's
Launch price difference: $649. Redmi K80 Ultra was $649 cheaper at launch.
Detailed category analysis
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).
Frequently asked questions
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.