Redmi K90 Ultra vs Tecno Spark 40
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Tecno Spark 40 (2025) runs on the MediaTek Helio G81; launch prices were $420 and $120. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 36/100 (a 37-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5200); the main camera is 50 MP vs 48 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 358,383); the Tecno Spark 40 is noticeably lighter (192g vs 227g).
Redmi K90 Ultra
Tecno Spark 40
- Higher AnTuTu: 3119308 vs 358383
- Better Geekbench Single: 3041 vs 432
- Better Geekbench Multi: 9494 vs 1416
- Bigger battery: 8550 vs 5200 mAh
- Faster charging: 100W vs 15W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 30/100)
- Better camera (37/100 vs 29/100)
- Longer battery life (78/100 vs 48/100)
- Better display (94/100 vs 44/100)
- Lighter: 192g vs 227g
- Cheaper at launch: $120 vs $420
- Better portability (64/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the Tecno Spark 40, the Redmi K90 Ultra scores 37 points higher (73/100 vs 36/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 30/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 48/100). Value score: Redmi K90 Ultra — 82/100, Tecno Spark 40 — 54/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 40 (92/100 vs 30/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 40 (94/100 vs 44/100). In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 29/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 40 (78/100 vs 48/100). In the "portability" category, the Tecno Spark 40 notably outperforms the Redmi K90 Ultra (64/100 vs 40/100).
| Specification | Redmi K90 Ultra | Tecno Spark 40 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | MediaTek Helio G81 | |
| AnTuTu | 3119308 | 358383 | |
| Geekbench Single | 3041 | 432 | |
| Geekbench Multi | 9494 | 1416 | |
| Display | 6.8" AMOLED | 6.7" IPS LCD | |
| Resolution | 1280x2772 | 1612x720 | |
| Refresh rate | 165 Hz | 90 Hz | |
| Battery | 8550 mAh | 5200 mAh | |
| Charging | 100W | 15W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 4GB / 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP64 | |
| Dimensions | 162.9×77.9×8.2 mm | 167.7×77.9×8.0 mm | |
| Weight | 227 g | 192 g | |
| Launch price | $420 | $120 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Tecno Spark 40
- Main: 48MP
- Front: 8MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Tecno Spark 40
- 6.7" IPS LCD
- Resolution: 1612x720
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Tecno Spark 40
- 5200 mAh
- Wired: 15W
- No wireless charging
We compared Redmi K90 Ultra and Tecno Spark 40, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Tecno Spark 40 by 770.4% in our overall performance rating.
Launch price difference: $300. Tecno Spark 40 was $300 cheaper at launch.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 40 (92/100 vs 30/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 40 (94/100 vs 44/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 29/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Tecno Spark 40 (78/100 vs 48/100).
portability
In the "portability" category, the Tecno Spark 40 notably outperforms the Redmi K90 Ultra (64/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the Tecno Spark 40?
The Redmi K90 Ultra significantly outperforms the Tecno Spark 40 by 37 points (73/100 vs 36/100).
What is the rating of the Redmi K90 Ultra and the Tecno Spark 40?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Tecno Spark 40 — 36/100.
Which has the better camera: the Redmi K90 Ultra or the Tecno Spark 40?
The Redmi K90 Ultra leads on camera score (37/100 vs 29/100).
Which is more powerful: the Redmi K90 Ultra or the Tecno Spark 40?
The Redmi K90 Ultra leads on performance (92/100 vs 30/100).
Should you choose the Redmi K90 Ultra over the Tecno Spark 40?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Tecno Spark 40 is a better fit for everyday use.