Redmi K90 vs Tecno Spark 40
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Tecno Spark 40 (2025) runs on the MediaTek Helio G81; launch prices were $401 and $120. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 36/100 (a 40-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5200); the main camera is 50 MP vs 48 MP; the Redmi K90 is faster in AnTuTu (3,088,357 vs 358,383).
Redmi K90
Tecno Spark 40
- Higher AnTuTu: 3088357 vs 358383
- Better Geekbench Single: 3041 vs 432
- Better Geekbench Multi: 9494 vs 1416
- Bigger battery: 7100 vs 5200 mAh
- Faster charging: 100W vs 15W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 90Hz
- Higher performance (92/100 vs 30/100)
- Better camera (58/100 vs 29/100)
- Longer battery life (72/100 vs 48/100)
- Better display (82/100 vs 44/100)
- Lighter: 192g vs 206g
- Cheaper at launch: $120 vs $401
- Better portability (64/100 vs 55/100)
Comparing the Redmi K90 vs the Tecno Spark 40, the Redmi K90 scores 40 points higher (76/100 vs 36/100). In the "performance" category, the Redmi K90 leads (92/100 vs 30/100). In the "camera" category, the Redmi K90 leads (58/100 vs 29/100). In the "battery" category, the Redmi K90 leads (72/100 vs 48/100). Value score: Redmi K90 — 90/100, 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 significantly outperforms the Tecno Spark 40 (92/100 vs 30/100). In the "display" category, the Redmi K90 significantly outperforms the Tecno Spark 40 (82/100 vs 44/100). In the "camera" category, the Redmi K90 notably outperforms the Tecno Spark 40 (58/100 vs 29/100). In the "battery" category, the Redmi K90 notably outperforms the Tecno Spark 40 (72/100 vs 48/100). In the "portability" category, the Tecno Spark 40 is a bit better (64/100 vs 55/100).
| Specification | Redmi K90 | Tecno Spark 40 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | MediaTek Helio G81 | |
| AnTuTu | 3088357 | 358383 | |
| Geekbench Single | 3041 | 432 | |
| Geekbench Multi | 9494 | 1416 | |
| Display | 6.6" AMOLED | 6.7" IPS LCD | |
| Resolution | 2510x1156 | 1612x720 | |
| Refresh rate | 120 Hz | 90 Hz | |
| Battery | 7100 mAh | 5200 mAh | |
| Charging | 100W | 15W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Telephoto | 50 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 | IP64 | |
| Dimensions | 157.5×75.3×8.0 mm | 167.7×77.9×8.0 mm | |
| Weight | 206 g | 192 g | |
| Launch price | $401 | $120 |
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Tecno Spark 40
- Main: 48MP
- Front: 8MP
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Tecno Spark 40
- 6.7" IPS LCD
- Resolution: 1612x720
- Refresh rate: 90 Hz
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Tecno Spark 40
- 5200 mAh
- Wired: 15W
- No wireless charging
We compared Redmi K90 and Tecno Spark 40, covering their specs and all relevant benchmarks.
Redmi K90 leads Tecno Spark 40 by 761.7% in our overall performance rating.
Launch price difference: $281. Tecno Spark 40 was $281 cheaper at launch.
performance
In the "performance" category, the Redmi K90 significantly outperforms the Tecno Spark 40 (92/100 vs 30/100).
display
In the "display" category, the Redmi K90 significantly outperforms the Tecno Spark 40 (82/100 vs 44/100).
camera
In the "camera" category, the Redmi K90 notably outperforms the Tecno Spark 40 (58/100 vs 29/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Tecno Spark 40 (72/100 vs 48/100).
portability
In the "portability" category, the Tecno Spark 40 is a bit better (64/100 vs 55/100).
Which is better: the Redmi K90 or the Tecno Spark 40?
The Redmi K90 significantly outperforms the Tecno Spark 40 by 40 points (76/100 vs 36/100).
What is the rating of the Redmi K90 and the Tecno Spark 40?
The Redmi K90 has a MobileRank rating of 76/100, the Tecno Spark 40 — 36/100.
Which has the better camera: the Redmi K90 or the Tecno Spark 40?
The Redmi K90 leads on camera score (58/100 vs 29/100).
Which is more powerful: the Redmi K90 or the Tecno Spark 40?
The Redmi K90 leads on performance (92/100 vs 30/100).
Should you choose the Redmi K90 over the Tecno Spark 40?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers. The Tecno Spark 40 is a better fit for everyday use.