Poco X8s vs Redmi K90 Ultra
The Poco X8s (2026) runs on the Qualcomm Snapdragon 7 Gen 4, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $437 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 67/100 (a 6-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6330); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 1,464,882); the Poco X8s is noticeably lighter (187g vs 227g).
Profile comparison
Category scores
Poco X8s
Redmi K90 Ultra
What makes Poco X8s better?
- Lighter: 187g vs 227g
- Better camera (58/100 vs 37/100)
- Better portability (65/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 1464882
- Better Geekbench Single: 3013 vs 1270
- Better Geekbench Multi: 9287 vs 4106
- Bigger battery: 8550 vs 6330 mAh
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $420 vs $437
- Higher performance (92/100 vs 67/100)
- Longer battery life (78/100 vs 69/100)
- Better display (94/100 vs 85/100)
Comparison verdict
Comparing the Poco X8s vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 6 points higher (73/100 vs 67/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 67/100). In the "camera" category, the Poco X8s leads (58/100 vs 37/100). Value score: Poco X8s — 60/100, 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 notably outperforms the Poco X8s (92/100 vs 67/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100). In the "camera" category, the Poco X8s notably outperforms the Redmi K90 Ultra (58/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 69/100). In the "portability" category, the Poco X8s notably outperforms the Redmi K90 Ultra (65/100 vs 40/100).
Specs comparison
| Specification | Poco X8s | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 7 Gen 4 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1464882 | 3233695 | |
| Geekbench Single | 1270 | 3013 | |
| Geekbench Multi | 4106 | 9287 | |
| Display | 6.3" LTPO OLED | 6.8" AMOLED | |
| Resolution | 1220x2656 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 6330 mAh | 8550 mAh | |
| Charging | 100W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 20 MP | 20 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 151.1×71.8×8.1 mm | 162.9×77.9×8.2 mm | |
| Weight | 187 g | 227 g | |
| Launch price | $437 | $420 |
Camera comparison
Poco X8s
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Poco X8s
- 6.3" LTPO OLED
- Resolution: 1220x2656
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Poco X8s
- 6330 mAh
- Wired: 100W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Poco X8s and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Poco X8s by 54.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $17. Redmi K90 Ultra was $17 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra notably outperforms the Poco X8s (92/100 vs 67/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 85/100).
camera
In the "camera" category, the Poco X8s notably outperforms the Redmi K90 Ultra (58/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 69/100).
portability
In the "portability" category, the Poco X8s notably outperforms the Redmi K90 Ultra (65/100 vs 40/100).
Frequently asked questions
Which is better: the Poco X8s or the Redmi K90 Ultra?
The Redmi K90 Ultra edges out the Poco X8s by just 6 points — the two devices are very close in overall level.
What is the rating of the Poco X8s and the Redmi K90 Ultra?
The Poco X8s has a MobileRank rating of 67/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Poco X8s or the Redmi K90 Ultra?
The Poco X8s leads on camera score (58/100 vs 37/100).
Which is more powerful: the Poco X8s or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 67/100).
Should you choose the Poco X8s over the Redmi K90 Ultra?
The Poco X8s is a better fit for active users. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.