Realme C51s vs Xiaomi 17 Ultra (China)
The Realme C51s (2024) runs on the Unisoc Tiger T612, while the Xiaomi 17 Ultra (China) (2025) runs on the Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Xiaomi 17 Ultra (China) leads — 87/100 vs 32/100 (a 55-point difference). Key differences: the Xiaomi 17 Ultra (China) has the bigger battery (6800 mAh vs 5000); the Realme C51s is noticeably lighter (182g vs 224g).
Profile comparison
Category scores
Realme C51s
Xiaomi 17 Ultra (China)
What makes Realme C51s better?
- Lighter: 182g vs 224g
- Better portability (75/100 vs 42/100)
What makes Xiaomi 17 Ultra (China) better?
- Better Geekbench Single: 3639 vs 360
- Better Geekbench Multi: 11047 vs 1250
- Bigger battery: 6800 vs 5000 mAh
- Faster charging: 90W vs 33W
- Higher refresh rate: 120Hz vs 90Hz
- Higher performance (98/100 vs 16/100)
- Longer battery life (83/100 vs 46/100)
- Better display (81/100 vs 43/100)
Comparison verdict
Comparing the Realme C51s vs the Xiaomi 17 Ultra (China), the Xiaomi 17 Ultra (China) scores 55 points higher (87/100 vs 32/100). In the "performance" category, the Xiaomi 17 Ultra (China) leads (98/100 vs 16/100). In the "battery" category, the Xiaomi 17 Ultra (China) leads (83/100 vs 46/100). In the "performance" category, the Xiaomi 17 Ultra (China) significantly outperforms the Realme C51s (98/100 vs 16/100). In the "display" category, the Xiaomi 17 Ultra (China) significantly outperforms the Realme C51s (81/100 vs 43/100). In the "battery" category, the Xiaomi 17 Ultra (China) significantly outperforms the Realme C51s (83/100 vs 46/100). In the "portability" category, the Realme C51s significantly outperforms the Xiaomi 17 Ultra (China) (75/100 vs 42/100).
Specs comparison
| Specification | Realme C51s | Xiaomi 17 Ultra (China) | |
|---|---|---|---|
| Processor | Unisoc Tiger T612 | Snapdragon 8 Elite Gen 5 | |
| AnTuTu | — | 3950082 | |
| Geekbench Single | 360 | 3639 | |
| Geekbench Multi | 1250 | 11047 | |
| Display | 6.7" IPS LCD | 6.9" LTPO AMOLED | |
| Resolution | 720x1600 | 1200x2608 | |
| Refresh rate | 90 Hz | 120 Hz | |
| Battery | 5000 mAh | 6800 mAh | |
| Charging | 33W | 90W | |
| Wireless charging | 0W | 50W | |
| Main camera | — | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 5 MP | 50 MP | |
| RAM | 6GB | 12GB / 16GB | |
| Storage | 128GB | 512GB / 1TB | |
| OS | Android 13, Realme UI | Android 16 | |
| Brightness (peak) | 560 nits | — | |
| NFC | yes | yes | |
| Protection | IP54 | IP68/IP69 | |
| Dimensions | 167.2×76.7×7.5 mm | 162.9×77.6×8.3 mm | |
| Weight | 182 g | 224 g | |
| Launch price | — | $892 |
Camera comparison
Realme C51s
- Main: —
- Front: 5MP
Xiaomi 17 Ultra (China)
- Main: 50MP f/1.7
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 50MP
Display comparison
Realme C51s
- 6.7" IPS LCD
- Resolution: 720x1600
- Refresh rate: 90 Hz
Xiaomi 17 Ultra (China)
- 6.9" LTPO AMOLED
- Resolution: 1200x2608
- Refresh rate: 120 Hz
Battery and charging
Realme C51s
- 5000 mAh
- Wired: 33W
- No wireless charging
Xiaomi 17 Ultra (China)
- 6800 mAh
- Wired: 90W
- Wireless: 50W
Benchmarks
Launch prices and where to check today's
Realme C51s
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 17 Ultra (China) significantly outperforms the Realme C51s (98/100 vs 16/100).
display
In the "display" category, the Xiaomi 17 Ultra (China) significantly outperforms the Realme C51s (81/100 vs 43/100).
battery
In the "battery" category, the Xiaomi 17 Ultra (China) significantly outperforms the Realme C51s (83/100 vs 46/100).
portability
In the "portability" category, the Realme C51s significantly outperforms the Xiaomi 17 Ultra (China) (75/100 vs 42/100).
Frequently asked questions
Which is better: the Realme C51s or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) significantly outperforms the Realme C51s by 55 points (87/100 vs 32/100).
What is the rating of the Realme C51s and the Xiaomi 17 Ultra (China)?
The Realme C51s has a MobileRank rating of 32/100, the Xiaomi 17 Ultra (China) — 87/100.
Which is more powerful: the Realme C51s or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on performance (98/100 vs 16/100).
Should you choose the Realme C51s over the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.