Realme C51 vs Xiaomi 17 Ultra
The Realme C51 (2023) runs on the Unisoc Tiger T612, while the Xiaomi 17 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Xiaomi 17 Ultra leads — 89/100 vs 31/100 (a 58-point difference). Key differences: the Xiaomi 17 Ultra has the bigger battery (6000 mAh vs 5000); the Realme C51 is noticeably lighter (186g vs 226g).
Profile comparison
Category scores
Realme C51
Xiaomi 17 Ultra
What makes Realme C51 better?
- Lighter: 186g vs 226g
- Better portability (67/100 vs 40/100)
What makes Xiaomi 17 Ultra better?
- Better Geekbench Single: 3639 vs 360
- Better Geekbench Multi: 11047 vs 1250
- Bigger battery: 6000 vs 5000 mAh
- Faster charging: 90W vs 33W
- Higher refresh rate: 120Hz vs 90Hz
- Higher performance (97/100 vs 16/100)
- Better camera (93/100 vs 30/100)
- Longer battery life (80/100 vs 46/100)
- Better display (89/100 vs 43/100)
Comparison verdict
Comparing the Realme C51 vs the Xiaomi 17 Ultra, the Xiaomi 17 Ultra scores 58 points higher (89/100 vs 31/100). In the "performance" category, the Xiaomi 17 Ultra leads (97/100 vs 16/100). In the "camera" category, the Xiaomi 17 Ultra leads (93/100 vs 30/100). In the "battery" category, the Xiaomi 17 Ultra leads (80/100 vs 46/100). In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Realme C51 (97/100 vs 16/100). In the "display" category, the Xiaomi 17 Ultra significantly outperforms the Realme C51 (89/100 vs 43/100). In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Realme C51 (93/100 vs 30/100). In the "battery" category, the Xiaomi 17 Ultra significantly outperforms the Realme C51 (80/100 vs 46/100). In the "portability" category, the Realme C51 notably outperforms the Xiaomi 17 Ultra (67/100 vs 40/100).
Specs comparison
| Specification | Realme C51 | Xiaomi 17 Ultra | |
|---|---|---|---|
| Processor | Unisoc Tiger T612 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | — | 3667711 | |
| Geekbench Single | 360 | 3639 | |
| Geekbench Multi | 1250 | 11047 | |
| Display | 6.7" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 720x1600 | 3200x1440 | |
| Refresh rate | 90 Hz | 120 Hz | |
| Battery | 5000 mAh | 6000 mAh | |
| Charging | 33W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 166 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 5 MP | 32 MP | |
| RAM | 4GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | Android 13, Realme UI T | Android 16 | |
| Brightness (peak) | 560 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 167.2×76.7×8.0 mm | 162.9×77.6×8.3 mm | |
| Weight | 186 g | 226 g | |
| Launch price | — | $999 |
Camera comparison
Realme C51
- Main: 50MP f/1.8
- Front: 5MP
Xiaomi 17 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Realme C51
- 6.7" IPS LCD
- Resolution: 720x1600
- Refresh rate: 90 Hz
Xiaomi 17 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Realme C51
- 5000 mAh
- Wired: 33W
- No wireless charging
Xiaomi 17 Ultra
- 6000 mAh
- NanoReview test: web browsing 16:09 hrs, total 33:23 hrs
- Wired: 90W
- Wireless: 50W
Benchmarks
Launch prices and where to check today's
Realme C51
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Realme C51 (97/100 vs 16/100).
display
In the "display" category, the Xiaomi 17 Ultra significantly outperforms the Realme C51 (89/100 vs 43/100).
camera
In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Realme C51 (93/100 vs 30/100).
battery
In the "battery" category, the Xiaomi 17 Ultra significantly outperforms the Realme C51 (80/100 vs 46/100).
portability
In the "portability" category, the Realme C51 notably outperforms the Xiaomi 17 Ultra (67/100 vs 40/100).
Frequently asked questions
Which is better: the Realme C51 or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra significantly outperforms the Realme C51 by 58 points (89/100 vs 31/100).
What is the rating of the Realme C51 and the Xiaomi 17 Ultra?
The Realme C51 has a MobileRank rating of 31/100, the Xiaomi 17 Ultra — 89/100.
Which has the better camera: the Realme C51 or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on camera score (93/100 vs 30/100).
Which is more powerful: the Realme C51 or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on performance (97/100 vs 16/100).
Should you choose the Realme C51 over the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.