Redmi K90 Ultra vs Tecno Spark Slim
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Tecno Spark Slim (2025) runs on the Helio G200; launch prices were $420 and $299. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 53/100 (a 20-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5160); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 603,568); the Tecno Spark Slim is noticeably lighter (156g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Tecno Spark Slim
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 603568
- Better Geekbench Single: 3013 vs 724
- Better Geekbench Multi: 9287 vs 1927
- Bigger battery: 8550 vs 5160 mAh
- Faster charging: 100W vs 45W
- Higher refresh rate: 165Hz vs 144Hz
- Higher performance (92/100 vs 44/100)
- Better camera (37/100 vs 31/100)
- Longer battery life (78/100 vs 60/100)
- Better display (94/100 vs 93/100)
What makes Tecno Spark Slim better?
- Lighter: 156g vs 227g
- Cheaper at launch: $299 vs $420
- Better portability (100/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Tecno Spark Slim, the Redmi K90 Ultra scores 20 points higher (73/100 vs 53/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 44/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 60/100). Value score: Redmi K90 Ultra — 72/100, Tecno Spark Slim — 44/100; 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 Tecno Spark Slim (92/100 vs 44/100). In the "display" category, the Redmi K90 Ultra and the Tecno Spark Slim are nearly equal (94/100 vs 93/100). In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 31/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Tecno Spark Slim (78/100 vs 60/100). In the "portability" category, the Tecno Spark Slim significantly outperforms the Redmi K90 Ultra (100/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Tecno Spark Slim | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Helio G200 | |
| AnTuTu | 3233695 | 603568 | |
| Geekbench Single | 3013 | 724 | |
| Geekbench Multi | 9287 | 1927 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1280x2772 | 1224x2720 | |
| Refresh rate | 165 Hz | 144 Hz | |
| Battery | 8550 mAh | 5160 mAh | |
| Charging | 100W | 45W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 13 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB | 256GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 3500 nits | 4500 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP64 | |
| Dimensions | 162.9×77.9×8.2 mm | 164.2×75.9×5.9 mm | |
| Weight | 227 g | 156 g | |
| Launch price | $420 | $299 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Tecno Spark Slim
- Main: 50MP
- Front: 13MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Tecno Spark Slim
- 6.8" AMOLED
- Resolution: 1224x2720
- Refresh rate: 144 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Tecno Spark Slim
- 5160 mAh
- Wired: 45W
- Wireless charging: no data
Overall performance score
We compared Redmi K90 Ultra and Tecno Spark Slim, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Tecno Spark Slim by 435.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $121. Tecno Spark Slim was $121 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark Slim (92/100 vs 44/100).
display
In the "display" category, the Redmi K90 Ultra and the Tecno Spark Slim are nearly equal (94/100 vs 93/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 31/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Tecno Spark Slim (78/100 vs 60/100).
portability
In the "portability" category, the Tecno Spark Slim significantly outperforms the Redmi K90 Ultra (100/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Tecno Spark Slim?
The Redmi K90 Ultra significantly outperforms the Tecno Spark Slim by 20 points (73/100 vs 53/100).
What is the rating of the Redmi K90 Ultra and the Tecno Spark Slim?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Tecno Spark Slim — 53/100.
Which has the better camera: the Redmi K90 Ultra or the Tecno Spark Slim?
The Redmi K90 Ultra leads on camera score (37/100 vs 31/100).
Which is more powerful: the Redmi K90 Ultra or the Tecno Spark Slim?
The Redmi K90 Ultra leads on performance (92/100 vs 44/100).
Should you choose the Redmi K90 Ultra over the Tecno Spark Slim?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.