Redmi K80 Ultra vs Redmi Note 4X
The Redmi K80 Ultra (2025) runs on the MediaTek Dimensity 9400+, while the Redmi Note 4X (2017) runs on the Qualcomm Snapdragon 625; launch prices were $350 and $160. By overall MobileRank rating, the Redmi K80 Ultra leads — 73/100 vs 22/100 (a 51-point difference). Key differences: the Redmi K80 Ultra has the bigger battery (7410 mAh vs 4100); the main camera is 50 MP vs 13 MP; the Redmi K80 Ultra is faster in AnTuTu (2,876,004 vs 218,879); the Redmi K80 Ultra has NFC for contactless payments, the Redmi Note 4X doesn't; the Redmi Note 4X is noticeably lighter (165g vs 219g).
Redmi K80 Ultra
Redmi Note 4X
- Higher AnTuTu: 2876004 vs 218879
- Better Geekbench Single: 2729 vs 189
- Better Geekbench Multi: 8430 vs 862
- Bigger battery: 7410 vs 4100 mAh
- Better main camera: 50MP vs 13MP
- Higher refresh rate: 144Hz vs 60Hz
- Higher performance (89/100 vs 14/100)
- Better camera (37/100 vs 10/100)
- Longer battery life (86/100 vs 35/100)
- Better display (94/100 vs 32/100)
- Lighter: 165g vs 219g
- Cheaper at launch: $160 vs $350
- Better portability (74/100 vs 40/100)
Comparing the Redmi K80 Ultra vs the Redmi Note 4X, the Redmi K80 Ultra scores 51 points higher (73/100 vs 22/100). In the "performance" category, the Redmi K80 Ultra leads (89/100 vs 14/100). In the "camera" category, the Redmi K80 Ultra leads (37/100 vs 10/100). In the "battery" category, the Redmi K80 Ultra leads (86/100 vs 35/100). Value score: Redmi K80 Ultra — 86/100, Redmi Note 4X — 16/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K80 Ultra significantly outperforms the Redmi Note 4X (89/100 vs 14/100). In the "display" category, the Redmi K80 Ultra significantly outperforms the Redmi Note 4X (94/100 vs 32/100). In the "camera" category, the Redmi K80 Ultra notably outperforms the Redmi Note 4X (37/100 vs 10/100). In the "battery" category, the Redmi K80 Ultra significantly outperforms the Redmi Note 4X (86/100 vs 35/100). In the "portability" category, the Redmi Note 4X significantly outperforms the Redmi K80 Ultra (74/100 vs 40/100).
| Specification | Redmi K80 Ultra | Redmi Note 4X | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9400+ | Qualcomm Snapdragon 625 | |
| AnTuTu | 2876004 | 218879 | |
| Geekbench Single | 2729 | 189 | |
| Geekbench Multi | 8430 | 862 | |
| Display | 6.8" OLED | 5.5" IPS LCD | |
| Resolution | 1280x2772 | — | |
| Refresh rate | 144 Hz | 60 Hz | |
| Battery | 7410 mAh | 4100 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 13 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 5 MP | |
| RAM | 12GB / 16GB | 3GB / 4GB | |
| Storage | 256GB / 512GB / 1TB | 32GB / 64GB | |
| OS | Android 15 | — | |
| Brightness (peak) | 3200 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | — | 151.0×76.0×8.5 mm | |
| Weight | 219 g | 165 g | |
| Launch price | $350 | $160 |
Redmi K80 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Front: 20MP
Redmi Note 4X
- Main: 13MP
- Front: 5MP
Redmi K80 Ultra
- 6.8" OLED
- Resolution: 1280x2772
- Refresh rate: 144 Hz
Redmi Note 4X
- 5.5" IPS LCD
- Refresh rate: 60 Hz
Redmi K80 Ultra
- 7410 mAh
- Wired: 100W
- Wireless charging: no data
Redmi Note 4X
- 4100 mAh
- Wireless charging: no data
We compared Redmi K80 Ultra and Redmi Note 4X, covering their specs and all relevant benchmarks.
Redmi K80 Ultra leads Redmi Note 4X by 1214.0% in our overall performance rating.
Launch price difference: $190. Redmi Note 4X was $190 cheaper at launch.
performance
In the "performance" category, the Redmi K80 Ultra significantly outperforms the Redmi Note 4X (89/100 vs 14/100).
display
In the "display" category, the Redmi K80 Ultra significantly outperforms the Redmi Note 4X (94/100 vs 32/100).
camera
In the "camera" category, the Redmi K80 Ultra notably outperforms the Redmi Note 4X (37/100 vs 10/100).
battery
In the "battery" category, the Redmi K80 Ultra significantly outperforms the Redmi Note 4X (86/100 vs 35/100).
portability
In the "portability" category, the Redmi Note 4X significantly outperforms the Redmi K80 Ultra (74/100 vs 40/100).
Which is better: the Redmi K80 Ultra or the Redmi Note 4X?
The Redmi K80 Ultra significantly outperforms the Redmi Note 4X by 51 points (73/100 vs 22/100).
What is the rating of the Redmi K80 Ultra and the Redmi Note 4X?
The Redmi K80 Ultra has a MobileRank rating of 73/100, the Redmi Note 4X — 22/100.
Which has the better camera: the Redmi K80 Ultra or the Redmi Note 4X?
The Redmi K80 Ultra leads on camera score (37/100 vs 10/100).
Which is more powerful: the Redmi K80 Ultra or the Redmi Note 4X?
The Redmi K80 Ultra leads on performance (89/100 vs 14/100).
Should you choose the Redmi K80 Ultra over the Redmi Note 4X?
The Redmi K80 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Redmi Note 4X is a better fit for everyday use.