Redmi K90 Ultra vs Samsung Galaxy S25
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy S25 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $420 and $799. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 66/100 (a 7-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4000); the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 2,615,773); the Samsung Galaxy S25 is noticeably lighter (162g vs 227g).
Redmi K90 Ultra
Samsung Galaxy S25
- Higher AnTuTu: 3119308 vs 2615773
- Bigger battery: 8550 vs 4000 mAh
- Faster charging: 100W vs 25W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $420 vs $799
- Higher performance (92/100 vs 90/100)
- Longer battery life (78/100 vs 31/100)
- Better display (94/100 vs 81/100)
- Better Geekbench Single: 3050 vs 3041
- Better Geekbench Multi: 9600 vs 9494
- Lighter: 162g vs 227g
- Better camera (40/100 vs 37/100)
- Better portability (89/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the Samsung Galaxy S25, the Redmi K90 Ultra scores 7 points higher (73/100 vs 66/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 31/100). Value score: Redmi K90 Ultra — 82/100, Samsung Galaxy S25 — 44/100; 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 and the Samsung Galaxy S25 are nearly equal (92/100 vs 90/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 81/100). In the "camera" category, the Samsung Galaxy S25 and the Redmi K90 Ultra are nearly equal (40/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy S25 (78/100 vs 31/100). In the "portability" category, the Samsung Galaxy S25 significantly outperforms the Redmi K90 Ultra (89/100 vs 40/100).
| Specification | Redmi K90 Ultra | Samsung Galaxy S25 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3119308 | 2615773 | |
| Geekbench Single | 3041 | 3050 | |
| Geekbench Multi | 9494 | 9600 | |
| Display | 6.8" AMOLED | 6.2" Dynamic AMOLED 2X | |
| Resolution | 1280x2772 | 2340x1080 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 4000 mAh | |
| Charging | 100W | 25W | |
| Wireless charging | 0W | 15W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 12 MP | |
| Telephoto | 0 MP | 10 MP | |
| Front camera | 20 MP | 12 MP | |
| RAM | 12GB / 16GB | 12GB | |
| Storage | 256GB / 512GB | 128GB / 256GB / 512GB | |
| OS | Android 16 | Android 15 / One UI 7 | |
| Brightness (peak) | 3500 nits | 2600 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 158.4×75.8×7.3 mm | |
| Weight | 227 g | 162 g | |
| Launch price | $420 | $799 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy S25
- Main: 50MP f/f/1.8
- Ultrawide: 12MP
- Telephoto: 10MP
- Front: 12MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy S25
- 6.2" Dynamic AMOLED 2X
- Resolution: 2340x1080
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy S25
- 4000 mAh
- Wired: 25W
- Wireless: 15W
We compared Redmi K90 Ultra and Samsung Galaxy S25, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Samsung Galaxy S25 by 19.2% in our overall performance rating.
Launch price difference: $379. Redmi K90 Ultra was $379 cheaper at launch.
performance
In the "performance" category, the Redmi K90 Ultra and the Samsung Galaxy S25 are nearly equal (92/100 vs 90/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 81/100).
camera
In the "camera" category, the Samsung Galaxy S25 and the Redmi K90 Ultra are nearly equal (40/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy S25 (78/100 vs 31/100).
portability
In the "portability" category, the Samsung Galaxy S25 significantly outperforms the Redmi K90 Ultra (89/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the Samsung Galaxy S25?
The Redmi K90 Ultra edges out the Samsung Galaxy S25 by just 7 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Samsung Galaxy S25?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Samsung Galaxy S25 — 66/100.
Should you choose the Redmi K90 Ultra over the Samsung Galaxy S25?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Samsung Galaxy S25 is a better fit for gamers and power users.