Realme C75x vs Xiaomi 17 Ultra
The Realme C75x (2025) runs on the MediaTek Helio G81 Ultra, 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 39/100 (a 50-point difference). Key differences: the Xiaomi 17 Ultra has the bigger battery (6000 mAh vs 5600); the Xiaomi 17 Ultra is faster in AnTuTu (3,667,711 vs 358,608); the Xiaomi 17 Ultra has NFC for contactless payments, the Realme C75x doesn't; the Realme C75x is noticeably lighter (196g vs 226g).
Profile comparison
Category scores
Realme C75x
Xiaomi 17 Ultra
What makes Realme C75x better?
- Lighter: 196g vs 226g
- Better portability (62/100 vs 40/100)
What makes Xiaomi 17 Ultra better?
- Higher AnTuTu: 3667711 vs 358608
- Better Geekbench Single: 3639 vs 432
- Better Geekbench Multi: 11047 vs 1416
- Bigger battery: 6000 vs 5600 mAh
- Faster charging: 90W vs 45W
- Higher performance (97/100 vs 30/100)
- Better camera (93/100 vs 30/100)
- Longer battery life (80/100 vs 55/100)
- Better display (89/100 vs 55/100)
Comparison verdict
Comparing the Realme C75x vs the Xiaomi 17 Ultra, the Xiaomi 17 Ultra scores 50 points higher (89/100 vs 39/100). In the "performance" category, the Xiaomi 17 Ultra leads (97/100 vs 30/100). 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 55/100). In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Realme C75x (97/100 vs 30/100). In the "display" category, the Xiaomi 17 Ultra significantly outperforms the Realme C75x (89/100 vs 55/100). In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Realme C75x (93/100 vs 30/100). In the "battery" category, the Xiaomi 17 Ultra notably outperforms the Realme C75x (80/100 vs 55/100). In the "portability" category, the Realme C75x notably outperforms the Xiaomi 17 Ultra (62/100 vs 40/100).
Specs comparison
| Specification | Realme C75x | Xiaomi 17 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G81 Ultra | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 358608 | 3667711 | |
| Geekbench Single | 432 | 3639 | |
| Geekbench Multi | 1416 | 11047 | |
| Display | 6.7" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 720x1604 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5600 mAh | 6000 mAh | |
| Charging | 45W | 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 | 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB / 1TB | |
| OS | Android 15, Realme UI 6.0 | Android 16 | |
| Brightness (peak) | 625 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 165.7×76.2×8.0 mm | 162.9×77.6×8.3 mm | |
| Weight | 196 g | 226 g | |
| Launch price | — | $999 |
Camera comparison
Realme C75x
- Main: 50MP f/1.8
- Front: 5MP
Xiaomi 17 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Realme C75x
- 6.7" IPS LCD
- Resolution: 720x1604
- Refresh rate: 120 Hz
Xiaomi 17 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Realme C75x
- 5600 mAh
- Wired: 45W
- No wireless charging
Xiaomi 17 Ultra
- 6000 mAh
- NanoReview test: web browsing 16:09 hrs, total 33:23 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Realme C75x and Xiaomi 17 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 17 Ultra leads Realme C75x by 90.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Realme C75x
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Realme C75x (97/100 vs 30/100).
display
In the "display" category, the Xiaomi 17 Ultra significantly outperforms the Realme C75x (89/100 vs 55/100).
camera
In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Realme C75x (93/100 vs 30/100).
battery
In the "battery" category, the Xiaomi 17 Ultra notably outperforms the Realme C75x (80/100 vs 55/100).
portability
In the "portability" category, the Realme C75x notably outperforms the Xiaomi 17 Ultra (62/100 vs 40/100).
Frequently asked questions
Which is better: the Realme C75x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra significantly outperforms the Realme C75x by 50 points (89/100 vs 39/100).
What is the rating of the Realme C75x and the Xiaomi 17 Ultra?
The Realme C75x has a MobileRank rating of 39/100, the Xiaomi 17 Ultra — 89/100.
Which has the better camera: the Realme C75x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on camera score (93/100 vs 30/100).
Which is more powerful: the Realme C75x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on performance (97/100 vs 30/100).
Should you choose the Realme C75x 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.