Redmi K100 vs Redmi K90 Ultra
The Redmi K100 (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K100 leads — 74/100 vs 73/100 (a 1-point difference). Key differences: the Redmi K100 has the bigger battery (10000 mAh vs 8550); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 3,126,402).
Profile comparison
Category scores
Redmi K100
Redmi K90 Ultra
What makes Redmi K100 better?
- Bigger battery: 10000 vs 8550 mAh
- Longer battery life (80/100 vs 78/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 3126402
- Higher performance (92/100 vs 91/100)
- Better display (94/100 vs 90/100)
Comparison verdict
Comparing the Redmi K100 vs the Redmi K90 Ultra, the Redmi K100 scores 1 points higher (74/100 vs 73/100). In the "performance" category, the Redmi K90 Ultra and the Redmi K100 are nearly equal (92/100 vs 91/100). In the "display" category, the Redmi K90 Ultra and the Redmi K100 are nearly equal (94/100 vs 90/100). In the "camera" category, both devices are on the same level — 37/100. In the "battery" category, the Redmi K100 and the Redmi K90 Ultra are nearly equal (80/100 vs 78/100).
Specs comparison
| Specification | Redmi K100 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3126402 | 3233695 | |
| Geekbench Single | 3013 | 3013 | |
| Geekbench Multi | 9287 | 9287 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1156x2510 | 1280x2772 | |
| Refresh rate | 165 Hz | 165 Hz | |
| Battery | 10000 mAh | 8550 mAh | |
| Charging | 100W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 20 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 17 | Android 16 | |
| Brightness (peak) | 3500 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | — | 162.9×77.9×8.2 mm | |
| Weight | — | 227 g | |
| Launch price | — | $420 |
Camera comparison
Redmi K100
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Redmi K100
- 6.8" AMOLED
- Resolution: 1156x2510
- Refresh rate: 165 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Redmi K100
- 10000 mAh
- Wired: 100W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Redmi K100 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Redmi K100 by 3.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Redmi K100
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra and the Redmi K100 are nearly equal (92/100 vs 91/100).
display
In the "display" category, the Redmi K90 Ultra and the Redmi K100 are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, both devices are on the same level — 37/100.
battery
In the "battery" category, the Redmi K100 and the Redmi K90 Ultra are nearly equal (80/100 vs 78/100).
Frequently asked questions
Which is better: the Redmi K100 or the Redmi K90 Ultra?
The Redmi K100 edges out the Redmi K90 Ultra by just 1 points — the two devices are very close in overall level.
What is the rating of the Redmi K100 and the Redmi K90 Ultra?
The Redmi K100 has a MobileRank rating of 74/100, the Redmi K90 Ultra — 73/100.
Should you choose the Redmi K100 over the Redmi K90 Ultra?
The Redmi K100 is a better fit for gamers and power users, those who care about battery life. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.