Poco F4 vs Redmi K90 Ultra
The Poco F4 (2022) runs on the Qualcomm Snapdragon 870, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $350 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 56/100 (a 17-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4500); the main camera is 64 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 961,250); the Poco F4 is noticeably lighter (195g vs 227g).
Profile comparison
Category scores
Poco F4
Redmi K90 Ultra
What makes Poco F4 better?
- Better main camera: 64MP vs 50MP
- Lighter: 195g vs 227g
- Cheaper at launch: $350 vs $420
- Better camera (44/100 vs 37/100)
- Better portability (65/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 961250
- Better Geekbench Single: 3013 vs 1298
- Better Geekbench Multi: 9287 vs 3520
- Bigger battery: 8550 vs 4500 mAh
- Faster charging: 100W vs 67W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 60/100)
- Longer battery life (78/100 vs 42/100)
- Better display (94/100 vs 79/100)
Comparison verdict
Comparing the Poco F4 vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 17 points higher (73/100 vs 56/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 60/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 42/100). Value score: Poco F4 — 46/100, 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 F4 (92/100 vs 60/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Poco F4 (94/100 vs 79/100). In the "camera" category, the Poco F4 is a bit better (44/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Poco F4 (78/100 vs 42/100). In the "portability" category, the Poco F4 notably outperforms the Redmi K90 Ultra (65/100 vs 40/100).
Specs comparison
| Specification | Poco F4 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 870 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 961250 | 3233695 | |
| Geekbench Single | 1298 | 3013 | |
| Geekbench Multi | 3520 | 9287 | |
| Display | 6.7" AMOLED | 6.8" AMOLED | |
| Resolution | 2400x1080 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 4500 mAh | 8550 mAh | |
| Charging | 67W | 100W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 20 MP | 20 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 12 | Android 16 | |
| Brightness (peak) | 1300 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP53 | IP68/IP69 | |
| Dimensions | 163.2×76.0×7.7 mm | 162.9×77.9×8.2 mm | |
| Weight | 195 g | 227 g | |
| Launch price | $350 | $420 |
Camera comparison
Poco F4
- Main: 64MP f/1.79
- Ultrawide: 8MP
- Front: 20MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Poco F4
- 6.7" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Poco F4
- 4500 mAh
- Wired: 67W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Poco F4 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Poco F4 by 70.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $70. Poco F4 was $70 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Poco F4 (92/100 vs 60/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Poco F4 (94/100 vs 79/100).
camera
In the "camera" category, the Poco F4 is a bit better (44/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Poco F4 (78/100 vs 42/100).
portability
In the "portability" category, the Poco F4 notably outperforms the Redmi K90 Ultra (65/100 vs 40/100).
Frequently asked questions
Which is better: the Poco F4 or the Redmi K90 Ultra?
The Redmi K90 Ultra is noticeably better than the Poco F4 — the overall rating gap is 17 points.
What is the rating of the Poco F4 and the Redmi K90 Ultra?
The Poco F4 has a MobileRank rating of 56/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Poco F4 or the Redmi K90 Ultra?
The Poco F4 leads on camera score (44/100 vs 37/100).
Which is more powerful: the Poco F4 or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 60/100).
Should you choose the Poco F4 over the Redmi K90 Ultra?
The Poco F4 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.