Realme X3 vs Samsung Galaxy S25 Ultra
The Realme X3 (2020) runs on the Qualcomm Snapdragon 855+, while the Samsung Galaxy S25 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Samsung Galaxy S25 Ultra leads — 80/100 vs 50/100 (a 30-point difference). Key differences: the Samsung Galaxy S25 Ultra has the bigger battery (5000 mAh vs 4200); the main camera is 64 MP vs 200 MP; the Samsung Galaxy S25 Ultra is faster in AnTuTu (3,128,552 vs 859,084); the Samsung Galaxy S25 Ultra has NFC for contactless payments, the Realme X3 doesn't; the Realme X3 is noticeably lighter (202g vs 218g).
Profile comparison
Category scores
Realme X3
Samsung Galaxy S25 Ultra
What makes Realme X3 better?
- Lighter: 202g vs 218g
- Better portability (48/100 vs 46/100)
What makes Samsung Galaxy S25 Ultra better?
- Higher AnTuTu: 3128552 vs 859084
- Better Geekbench Single: 3100 vs 1031
- Better Geekbench Multi: 9760 vs 2864
- Bigger battery: 5000 vs 4200 mAh
- Faster charging: 45W vs 30W
- Better main camera: 200MP vs 64MP
- Higher performance (92/100 vs 55/100)
- Better camera (81/100 vs 48/100)
- Longer battery life (56/100 vs 28/100)
- Better display (88/100 vs 70/100)
Comparison verdict
Comparing the Realme X3 vs the Samsung Galaxy S25 Ultra, the Samsung Galaxy S25 Ultra scores 30 points higher (80/100 vs 50/100). In the "performance" category, the Samsung Galaxy S25 Ultra leads (92/100 vs 55/100). In the "camera" category, the Samsung Galaxy S25 Ultra leads (81/100 vs 48/100). In the "battery" category, the Samsung Galaxy S25 Ultra leads (56/100 vs 28/100). In the "performance" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme X3 (92/100 vs 55/100). In the "display" category, the Samsung Galaxy S25 Ultra notably outperforms the Realme X3 (88/100 vs 70/100). In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme X3 (81/100 vs 48/100). In the "battery" category, the Samsung Galaxy S25 Ultra notably outperforms the Realme X3 (56/100 vs 28/100). In the "portability" category, the Realme X3 and the Samsung Galaxy S25 Ultra are nearly equal (48/100 vs 46/100).
Specs comparison
| Specification | Realme X3 | Samsung Galaxy S25 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 859084 | 3128552 | |
| Geekbench Single | 1031 | 3100 | |
| Geekbench Multi | 2864 | 9760 | |
| Display | 6.0" IPS LCD | 6.9" Dynamic AMOLED 2X | |
| Resolution | 1080x2400 | 3120x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4200 mAh | 5000 mAh | |
| Charging | 30W | 45W | |
| Wireless charging | 0W | 15W | |
| DXOMark (camera) | — | 151 | |
| Main camera | 64 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 12 MP | 50 MP | |
| Front camera | 16 MP | 12 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB / 1TB | |
| OS | Android 10, Realme UI | Android 15 / One UI 7 | |
| Brightness (peak) | — | 2600 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 163.8×75.8×8.9 mm | 162.8×77.6×8.2 mm | |
| Weight | 202 g | 218 g | |
| Launch price | — | $1299 |
Camera comparison
Realme X3
- Main: 64MP f/1.8
- Ultrawide: 8MP
- Telephoto: 12MP
- Front: 16MP
Samsung Galaxy S25 Ultra
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 12MP
Display comparison
Realme X3
- 6.0" IPS LCD
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Samsung Galaxy S25 Ultra
- 6.9" Dynamic AMOLED 2X
- Resolution: 3120x1440
- Refresh rate: 120 Hz
Battery and charging
Realme X3
- 4200 mAh
- Wired: 30W
- No wireless charging
Samsung Galaxy S25 Ultra
- 5000 mAh
- NanoReview test: web browsing 11:10 hrs, total 28:43 hrs
- Wired: 45W
- Wireless: 15W
Overall performance score
We compared Realme X3 and Samsung Galaxy S25 Ultra, covering their specs and all relevant benchmarks.
Samsung Galaxy S25 Ultra leads Realme X3 by 72.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Realme X3
Price unknownDetailed category analysis
performance
In the "performance" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme X3 (92/100 vs 55/100).
display
In the "display" category, the Samsung Galaxy S25 Ultra notably outperforms the Realme X3 (88/100 vs 70/100).
camera
In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme X3 (81/100 vs 48/100).
battery
In the "battery" category, the Samsung Galaxy S25 Ultra notably outperforms the Realme X3 (56/100 vs 28/100).
portability
In the "portability" category, the Realme X3 and the Samsung Galaxy S25 Ultra are nearly equal (48/100 vs 46/100).
Frequently asked questions
Which is better: the Realme X3 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra significantly outperforms the Realme X3 by 30 points (80/100 vs 50/100).
What is the rating of the Realme X3 and the Samsung Galaxy S25 Ultra?
The Realme X3 has a MobileRank rating of 50/100, the Samsung Galaxy S25 Ultra — 80/100.
Which has the better camera: the Realme X3 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra leads on camera score (81/100 vs 48/100).
Which is more powerful: the Realme X3 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra leads on performance (92/100 vs 55/100).
Should you choose the Realme X3 over the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra is a better fit for gamers and power users, mobile photography enthusiasts.