Redmi K90 vs Samsung Galaxy S25 Ultra
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy S25 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $401 and $1299. By overall MobileRank rating, the Redmi K90 leads — 68/100 vs 66/100 (a 2-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5000); the main camera is 50 MP vs 200 MP; the Redmi K90 is faster in AnTuTu (3,088,357 vs 2,800,202).
Redmi K90
Samsung Galaxy S25 Ultra
- Higher AnTuTu: 3088357 vs 2800202
- Bigger battery: 7100 vs 5000 mAh
- Faster charging: 100W vs 45W
- Lighter: 206g vs 218g
- Cheaper: $401 vs $1299
- Higher performance (69/100 vs 67/100)
- Longer battery life (71/100 vs 45/100)
- Better design/ergonomics (42/100 vs 27/100)
- Better value for money (82/100 vs 20/100)
- Better Geekbench Single: 3100 vs 3050
- Better Geekbench Multi: 9760 vs 9300
- Better main camera: 200MP vs 50MP
- Better camera (81/100 vs 53/100)
Comparing the Redmi K90 vs the Samsung Galaxy S25 Ultra, the Redmi K90 scores 2 points higher (68/100 vs 66/100). In the "camera" category, the Samsung Galaxy S25 Ultra leads (81/100 vs 53/100). In the "battery" category, the Redmi K90 leads (71/100 vs 45/100). In the "value for money" category, the Redmi K90 leads (82/100 vs 20/100). In the "performance" category, the Redmi K90 and the Samsung Galaxy S25 Ultra are nearly equal (69/100 vs 67/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Samsung Galaxy S25 Ultra notably outperforms the Redmi K90 (81/100 vs 53/100). In the "battery" category, the Redmi K90 notably outperforms the Samsung Galaxy S25 Ultra (71/100 vs 45/100). In the "design" category, the Redmi K90 notably outperforms the Samsung Galaxy S25 Ultra (42/100 vs 27/100). In the "value for money" category, the Redmi K90 significantly outperforms the Samsung Galaxy S25 Ultra (82/100 vs 20/100).
| Specification | Redmi K90 | Samsung Galaxy S25 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3088357 | 2800202 | |
| Geekbench Single | 3050 | 3100 | |
| Geekbench Multi | 9300 | 9760 | |
| Display | 6.6" AMOLED | 6.9" Dynamic AMOLED 2X | |
| Resolution | 2510x1156 | 3120x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7100 mAh | 5000 mAh | |
| Charging | 100W | 45W | |
| Wireless charging | 0W | 15W | |
| DXOMark (camera) | — | 151 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 20 MP | 12 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / One UI 7 | |
| Brightness (peak) | 3500 nits | 2600 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 157.5×75.3×8.0 mm | 162.8×77.6×8.2 mm | |
| Weight | 206 g | 218 g | |
| Price | $401 | $1299 |
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Samsung Galaxy S25 Ultra
- Main: 200MP f/f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 12MP
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Samsung Galaxy S25 Ultra
- 6.9" Dynamic AMOLED 2X
- Resolution: 3120x1440
- Refresh rate: 120 Hz
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy S25 Ultra
- 5000 mAh
- NanoReview test: web browsing 11:10 hrs, total 28:43 hrs
- Wired: 45W
- Wireless: 15W
We compared Redmi K90 and Samsung Galaxy S25 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 leads Samsung Galaxy S25 Ultra by 10.3% in our overall performance rating.
Price difference: $898. Redmi K90 is cheaper by $898.
performance
In the "performance" category, the Redmi K90 and the Samsung Galaxy S25 Ultra are nearly equal (69/100 vs 67/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Samsung Galaxy S25 Ultra notably outperforms the Redmi K90 (81/100 vs 53/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Samsung Galaxy S25 Ultra (71/100 vs 45/100).
design
In the "design" category, the Redmi K90 notably outperforms the Samsung Galaxy S25 Ultra (42/100 vs 27/100).
value for money
In the "value for money" category, the Redmi K90 significantly outperforms the Samsung Galaxy S25 Ultra (82/100 vs 20/100).
Which is better: the Redmi K90 or the Samsung Galaxy S25 Ultra?
The Redmi K90 edges out the Samsung Galaxy S25 Ultra by just 2 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 and the Samsung Galaxy S25 Ultra?
The Redmi K90 has a MobileRank rating of 68/100, the Samsung Galaxy S25 Ultra — 66/100.
Which has the better camera: the Redmi K90 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra leads on camera score (81/100 vs 53/100).
Should you choose the Redmi K90 over the Samsung Galaxy S25 Ultra?
The Redmi K90 is a better fit for active users, budget-conscious buyers. The Samsung Galaxy S25 Ultra is a better fit for active users, mobile photography enthusiasts.