Redmi K90 Ultra vs Samsung Galaxy S25 Ultra
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy S25 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $420 and $1299. By overall MobileRank rating, the Samsung Galaxy S25 Ultra leads — 66/100 vs 61/100 (a 5-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 50 MP vs 200 MP; the Samsung Galaxy S25 Ultra is faster in AnTuTu (2,800,202 vs 2,760,000).
Redmi K90 Ultra
Samsung Galaxy S25 Ultra
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 45W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper: $420 vs $1299
- Longer battery life (77/100 vs 45/100)
- Better value for money (81/100 vs 20/100)
- Higher AnTuTu: 2800202 vs 2760000
- Better Geekbench Single: 3100 vs 3050
- Better Geekbench Multi: 9760 vs 9300
- Better main camera: 200MP vs 50MP
- Lighter: 218g vs 227g
- Higher performance (67/100 vs 65/100)
- Better camera (81/100 vs 32/100)
- Better design/ergonomics (27/100 vs 16/100)
Comparing the Redmi K90 Ultra vs the Samsung Galaxy S25 Ultra, the Samsung Galaxy S25 Ultra scores 5 points higher (66/100 vs 61/100). In the "camera" category, the Samsung Galaxy S25 Ultra leads (81/100 vs 32/100). In the "battery" category, the Redmi K90 Ultra leads (77/100 vs 45/100). In the "value for money" category, the Redmi K90 Ultra leads (81/100 vs 20/100). In the "performance" category, the Samsung Galaxy S25 Ultra and the Redmi K90 Ultra are nearly equal (67/100 vs 65/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Redmi K90 Ultra (81/100 vs 32/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy S25 Ultra (77/100 vs 45/100). In the "design" category, the Samsung Galaxy S25 Ultra is a bit better (27/100 vs 16/100). In the "value for money" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy S25 Ultra (81/100 vs 20/100).
| Specification | Redmi K90 Ultra | Samsung Galaxy S25 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2760000 | 2800202 | |
| Geekbench Single | 3050 | 3100 | |
| Geekbench Multi | 9300 | 9760 | |
| Display | 6.8" AMOLED | 6.9" Dynamic AMOLED 2X | |
| Resolution | 1280x2772 | 3120x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 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 | 0 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/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 162.8×77.6×8.2 mm | |
| Weight | 227 g | 218 g | |
| Price | $420 | $1299 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy S25 Ultra
- Main: 200MP f/f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 12MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy S25 Ultra
- 6.9" Dynamic AMOLED 2X
- Resolution: 3120x1440
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 8550 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 Ultra and Samsung Galaxy S25 Ultra, covering their specs and all relevant benchmarks.
Samsung Galaxy S25 Ultra leads Redmi K90 Ultra by 1.4% in our overall performance rating.
Price difference: $879. Redmi K90 Ultra is cheaper by $879.
performance
In the "performance" category, the Samsung Galaxy S25 Ultra and the Redmi K90 Ultra are nearly equal (67/100 vs 65/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Redmi K90 Ultra (81/100 vs 32/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy S25 Ultra (77/100 vs 45/100).
design
In the "design" category, the Samsung Galaxy S25 Ultra is a bit better (27/100 vs 16/100).
value for money
In the "value for money" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy S25 Ultra (81/100 vs 20/100).
Which is better: the Redmi K90 Ultra or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra edges out the Redmi K90 Ultra by just 5 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Samsung Galaxy S25 Ultra?
The Redmi K90 Ultra has a MobileRank rating of 61/100, the Samsung Galaxy S25 Ultra — 66/100.
Which has the better camera: the Redmi K90 Ultra or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra leads on camera score (81/100 vs 32/100).
Should you choose the Redmi K90 Ultra over the Samsung Galaxy S25 Ultra?
The Redmi K90 Ultra is a better fit for active users, those who care about battery life, budget-conscious buyers. The Samsung Galaxy S25 Ultra is a better fit for active users, mobile photography enthusiasts.