HMD Arc vs Redmi K90 Ultra
The HMD Arc (2025) runs on the Unisoc SC9863A, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 20/100 (a 53-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 13 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 153,667); the Redmi K90 Ultra has NFC for contactless payments, the HMD Arc doesn't; the HMD Arc is noticeably lighter (185g vs 227g).
Profile comparison
Category scores
HMD Arc
Redmi K90 Ultra
What makes HMD Arc better?
- Lighter: 185g vs 227g
- Better portability (57/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 153667
- Better Geekbench Single: 3013 vs 205
- Better Geekbench Multi: 9287 vs 846
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 10W
- Better main camera: 50MP vs 13MP
- Higher refresh rate: 165Hz vs 60Hz
- Higher performance (92/100 vs 9/100)
- Better camera (37/100 vs 10/100)
- Longer battery life (78/100 vs 43/100)
- Better display (94/100 vs 31/100)
Comparison verdict
Comparing the HMD Arc vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 53 points higher (73/100 vs 20/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 9/100). In the "camera" category, the Redmi K90 Ultra leads (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 43/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the HMD Arc (92/100 vs 9/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the HMD Arc (94/100 vs 31/100). In the "camera" category, the Redmi K90 Ultra notably outperforms the HMD Arc (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the HMD Arc (78/100 vs 43/100). In the "portability" category, the HMD Arc notably outperforms the Redmi K90 Ultra (57/100 vs 40/100).
Specs comparison
| Specification | HMD Arc | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Unisoc SC9863A | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 153667 | 3233695 | |
| Geekbench Single | 205 | 3013 | |
| Geekbench Multi | 846 | 9287 | |
| Display | 6.5" IPS LCD | 6.8" AMOLED | |
| Resolution | 576x1280 | 1280x2772 | |
| Refresh rate | 60 Hz | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | 10W | 100W | |
| Main camera | 13 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 5 MP | 20 MP | |
| RAM | 4GB | 12GB / 16GB | |
| Storage | 64GB | 256GB / 512GB | |
| OS | Android 14 Go | Android 16 | |
| Brightness (peak) | 460 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP54 | IP68/IP69 | |
| Dimensions | 166.4×76.9×9.0 mm | 162.9×77.9×8.2 mm | |
| Weight | 185 g | 227 g | |
| Launch price | — | $420 |
Camera comparison
HMD Arc
- Main: 13MP
- Front: 5MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
HMD Arc
- 6.5" IPS LCD
- Resolution: 576x1280
- Refresh rate: 60 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
HMD Arc
- 5000 mAh
- Wired: 10W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared HMD Arc and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads HMD Arc by 95.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
HMD Arc
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the HMD Arc (92/100 vs 9/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the HMD Arc (94/100 vs 31/100).
camera
In the "camera" category, the Redmi K90 Ultra notably outperforms the HMD Arc (37/100 vs 10/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the HMD Arc (78/100 vs 43/100).
portability
In the "portability" category, the HMD Arc notably outperforms the Redmi K90 Ultra (57/100 vs 40/100).
Frequently asked questions
Which is better: the HMD Arc or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the HMD Arc by 53 points (73/100 vs 20/100).
What is the rating of the HMD Arc and the Redmi K90 Ultra?
The HMD Arc has a MobileRank rating of 20/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the HMD Arc or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 10/100).
Which is more powerful: the HMD Arc or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 9/100).
Should you choose the HMD Arc over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.