Poco X8 Power vs Redmi K90 Ultra
The Poco X8 Power (2026) runs on the Qualcomm Snapdragon 6 Gen 5, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $360 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 60/100 (a 13-point difference). Key differences: the Poco X8 Power has the bigger battery (10000 mAh vs 8550); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 1,012,134); the Redmi K90 Ultra has NFC for contactless payments, the Poco X8 Power doesn't.
Profile comparison
Category scores
Poco X8 Power
Redmi K90 Ultra
What makes Poco X8 Power better?
- Bigger battery: 10000 vs 8550 mAh
- Cheaper at launch: $360 vs $420
- Better camera (40/100 vs 37/100)
- Longer battery life (80/100 vs 78/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 1012134
- Better Geekbench Single: 3013 vs 1099
- Better Geekbench Multi: 9287 vs 3481
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 227g vs 229g
- Higher performance (92/100 vs 59/100)
- Better display (94/100 vs 84/100)
- Better portability (40/100 vs 35/100)
Comparison verdict
Comparing the Poco X8 Power vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 13 points higher (73/100 vs 60/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 59/100). Value score: Poco X8 Power — 52/100, Redmi K90 Ultra — 72/100; 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 Redmi K90 Ultra significantly outperforms the Poco X8 Power (92/100 vs 59/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 84/100). In the "camera" category, the Poco X8 Power and the Redmi K90 Ultra are nearly equal (40/100 vs 37/100). In the "battery" category, the Poco X8 Power and the Redmi K90 Ultra are nearly equal (80/100 vs 78/100). In the "portability" category, the Redmi K90 Ultra is a bit better (40/100 vs 35/100).
Specs comparison
| Specification | Poco X8 Power | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 6 Gen 5 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1012134 | 3233695 | |
| Geekbench Single | 1099 | 3013 | |
| Geekbench Multi | 3481 | 9287 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1280x2772 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 10000 mAh | 8550 mAh | |
| Charging | 100W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 8GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP68/IP69K | IP68/IP69 | |
| Dimensions | 163.4×78.3×8.6 mm | 162.9×77.9×8.2 mm | |
| Weight | 229 g | 227 g | |
| Launch price | $360 | $420 |
Camera comparison
Poco X8 Power
- Main: 50MP f/1.5
- Ultrawide: 8MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Poco X8 Power
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Poco X8 Power
- 10000 mAh
- Wired: 100W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Poco X8 Power and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Poco X8 Power by 68.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $60. Poco X8 Power was $60 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Poco X8 Power (92/100 vs 59/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 84/100).
camera
In the "camera" category, the Poco X8 Power and the Redmi K90 Ultra are nearly equal (40/100 vs 37/100).
battery
In the "battery" category, the Poco X8 Power and the Redmi K90 Ultra are nearly equal (80/100 vs 78/100).
portability
In the "portability" category, the Redmi K90 Ultra is a bit better (40/100 vs 35/100).
Frequently asked questions
Which is better: the Poco X8 Power or the Redmi K90 Ultra?
The Redmi K90 Ultra is noticeably better than the Poco X8 Power — the overall rating gap is 13 points.
What is the rating of the Poco X8 Power and the Redmi K90 Ultra?
The Poco X8 Power has a MobileRank rating of 60/100, the Redmi K90 Ultra — 73/100.
Which is more powerful: the Poco X8 Power or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 59/100).
Should you choose the Poco X8 Power over the Redmi K90 Ultra?
The Poco X8 Power is a better fit for 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.