Redmi K90 Ultra vs Tecno Spark 6 Air
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Tecno Spark 6 Air (2020) runs on the MediaTek Helio A22. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 21/100 (a 52-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6000); the main camera is 50 MP vs 13 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 155,362); the Redmi K90 Ultra has NFC for contactless payments, the Tecno Spark 6 Air doesn't; the Redmi K90 Ultra is thinner (8.2mm vs 9.3mm).
Profile comparison
Category scores
Redmi K90 Ultra
Tecno Spark 6 Air
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 155362
- Better Geekbench Single: 3013 vs 300
- Better Geekbench Multi: 9287 vs 486
- Bigger battery: 8550 vs 6000 mAh
- Faster charging: 100W vs 18W
- Better main camera: 50MP vs 13MP
- Higher performance (92/100 vs 10/100)
- Better camera (37/100 vs 10/100)
- Longer battery life (78/100 vs 51/100)
- Better display (94/100 vs 37/100)
- Better portability (40/100 vs 24/100)
What makes Tecno Spark 6 Air better?
- Overall rating 21/100
Comparison verdict
Comparing the Redmi K90 Ultra vs the Tecno Spark 6 Air, the Redmi K90 Ultra scores 52 points higher (73/100 vs 21/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 10/100). 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 51/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 6 Air (92/100 vs 10/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 6 Air (94/100 vs 37/100). In the "camera" category, the Redmi K90 Ultra notably outperforms the Tecno Spark 6 Air (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Tecno Spark 6 Air (78/100 vs 51/100). In the "portability" category, the Redmi K90 Ultra notably outperforms the Tecno Spark 6 Air (40/100 vs 24/100).
Specs comparison
| Specification | Redmi K90 Ultra | Tecno Spark 6 Air | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | MediaTek Helio A22 | |
| AnTuTu | 3233695 | 155362 | |
| Geekbench Single | 3013 | 300 | |
| Geekbench Multi | 9287 | 486 | |
| Display | 6.8" AMOLED | 7.0" IPS LCD | |
| Resolution | 1280x2772 | 720x1640 | |
| Refresh rate | 165 Hz | — | |
| Battery | 8550 mAh | 6000 mAh | |
| Charging | 100W | 18W | |
| Main camera | 50 MP | 13 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 2GB / 3GB | |
| Storage | 256GB / 512GB | 32GB / 64GB | |
| OS | Android 16 | Android 10 (Go edition), HiOS 6.2 | |
| Brightness (peak) | 3500 nits | 480 nits | |
| NFC | yes | no | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 174.7×79.4×9.3 mm | |
| Weight | 227 g | — | |
| Launch price | $420 | — |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Tecno Spark 6 Air
- Main: 13MP f/1.8
- Front: 8MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Tecno Spark 6 Air
- 7.0" IPS LCD
- Resolution: 720x1640
- Refresh rate: —
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Tecno Spark 6 Air
- 6000 mAh
- Wired: 18W
- No wireless charging
Overall performance score
We compared Redmi K90 Ultra and Tecno Spark 6 Air, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Tecno Spark 6 Air by 1981.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Tecno Spark 6 Air
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 6 Air (92/100 vs 10/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 6 Air (94/100 vs 37/100).
camera
In the "camera" category, the Redmi K90 Ultra notably outperforms the Tecno Spark 6 Air (37/100 vs 10/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Tecno Spark 6 Air (78/100 vs 51/100).
portability
In the "portability" category, the Redmi K90 Ultra notably outperforms the Tecno Spark 6 Air (40/100 vs 24/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Tecno Spark 6 Air?
The Redmi K90 Ultra significantly outperforms the Tecno Spark 6 Air by 52 points (73/100 vs 21/100).
What is the rating of the Redmi K90 Ultra and the Tecno Spark 6 Air?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Tecno Spark 6 Air — 21/100.
Which has the better camera: the Redmi K90 Ultra or the Tecno Spark 6 Air?
The Redmi K90 Ultra leads on camera score (37/100 vs 10/100).
Which is more powerful: the Redmi K90 Ultra or the Tecno Spark 6 Air?
The Redmi K90 Ultra leads on performance (92/100 vs 10/100).
Should you choose the Redmi K90 Ultra over the Tecno Spark 6 Air?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.