realme C75x vs Xiaomi 15 Ultra
28.9Performance79.1
39.6Display69.1
29Camera73.2
58.1Battery79
20Features78.7
3 spec wins — realme C75x9 spec wins — Xiaomi 15 Ultra
InnoReviews verdict
Xiaomi 15 Ultra wins this phone face-off, 75.9 to 36, pulling ahead mainly in features (+59) and performance (+50). realme C75x still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the realme C75x
- 15% lower thickness: 8 mm vs 9.4 mm
- 13% lower weight: 196 g vs 226 g
Reasons to pick the Xiaomi 15 Ultra
- Stronger performance score: 79 vs 29
- Stronger display score: 69 vs 40
- Stronger camera score: 73 vs 29
- Stronger battery score: 79 vs 58
- Stronger features score: 79 vs 20
Display
| Spec | realme C75x | Xiaomi 15 Ultra |
|---|---|---|
| Screen size | 6.67 ″ | 6.73 ″+1% |
| Panel type | IPS LCD | LTPO AMOLED |
| Resolution | 720x1604 | 1440x3200 |
| Pixel density | 264 ppi | 522 ppi+98% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 625 nits | 3,200 nits+412% |
| Screen-to-body | 84.9 % | 90 %+6% |
Performance
| Spec | realme C75x | Xiaomi 15 Ultra |
|---|---|---|
| Chipset | MediaTek Helio G81 Ultra | Snapdragon 8 Elite |
| AnTuTu | — | 2,650,000 |
| Geekbench 6 (single) | — | 3,050Top 12% |
| Geekbench 6 (multi) | — | 9,600Top 11% |
| RAM (max) | 8 GB | 16 GB+100% |
| Storage options | 128/256GB | 256/512GB/1TB |
| Storage type | — | UFS 4.1 |
Camera
| Spec | realme C75x | Xiaomi 15 Ultra |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.8 | f/1.63 |
| Ultra-wide | — | 50 MP |
| Telephoto | — | 200 MP |
| Optical zoom | — | 4.3 x |
| Max video | 1080p@30fps | 8K@30fps |
| Front camera | 5 MP | 32 MP+540% |
| OIS | — | Yes |
Battery
| Spec | realme C75x | Xiaomi 15 Ultra |
|---|---|---|
| Capacity | 5,600 mAh+4% | 5,410 mAh |
| Wired charging | 45 W | 90 W+100% |
| Wireless charging | — | 80 W |
| Active use endurance | — | 12 h |
Design
| Spec | realme C75x | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 196 g+13% | 226 g |
| Thickness | 8 mm+15% | 9.4 mm |
| IP rating | IP66/IP68/IP69 | IP68 |
| Frame material | — | Aluminum |
Connectivity
| Spec | realme C75x | Xiaomi 15 Ultra |
|---|---|---|
| 5G | No | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 7 |
| Bluetooth | 5.0 | 6.0 |
| NFC | No | Yes |
| USB | USB Type-C | USB-C 3.2 |
| eSIM | — | Yes |
Software
| Spec | realme C75x | Xiaomi 15 Ultra |
|---|---|---|
| OS at launch | Android 15 | Android 15 (HyperOS 2) |
| OS update pledge | — | 4 years |
Audio
| Spec | realme C75x | Xiaomi 15 Ultra |
|---|---|---|
| Stereo speakers | — | Yes |
| 3.5mm jack | No | No |