Realme C100 4G vs Vivo X300 Ultra
The Realme C100 4G (2026) runs on the Helio G92 Max, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $269 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 38/100 (a 53-point difference). Key differences: the Realme C100 4G has the bigger battery (8000 mAh vs 7000); the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 365,001).
Profile comparison
Category scores
Realme C100 4G
Vivo X300 Ultra
What makes Realme C100 4G better?
- Bigger battery: 8000 vs 7000 mAh
- Lighter: 219g vs 230g
- Cheaper at launch: $269 vs $950
- Better portability (41/100 vs 39/100)
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 365001
- Better Geekbench Single: 3639 vs 430
- Better Geekbench Multi: 11047 vs 1375
- Faster charging: 100W vs 15W
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 29/100)
- Better camera (96/100 vs 30/100)
- Longer battery life (85/100 vs 58/100)
- Better display (89/100 vs 55/100)
Comparison verdict
Comparing the Realme C100 4G vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 53 points higher (91/100 vs 38/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 29/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 30/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 58/100). Value score: Realme C100 4G — 22/100, Vivo X300 Ultra — 94/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Vivo X300 Ultra significantly outperforms the Realme C100 4G (99/100 vs 29/100). In the "display" category, the Vivo X300 Ultra significantly outperforms the Realme C100 4G (89/100 vs 55/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the Realme C100 4G (96/100 vs 30/100). In the "battery" category, the Vivo X300 Ultra notably outperforms the Realme C100 4G (85/100 vs 58/100). In the "portability" category, the Realme C100 4G and the Vivo X300 Ultra are nearly equal (41/100 vs 39/100).
Specs comparison
| Specification | Realme C100 4G | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Helio G92 Max | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 365001 | 4247433 | |
| Geekbench Single | 430 | 3639 | |
| Geekbench Multi | 1375 | 11047 | |
| Display | 6.8" IPS LCD | 6.8" LTPO OLED | |
| Resolution | 720x1570 | 3168x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 8000 mAh | 7000 mAh | |
| Charging | 15W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 8 MP | 32 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 16 / realme UI 7.0 | Android 16 | |
| Brightness (peak) | 1200 nits | — | |
| NFC | yes | yes | |
| Protection | IP68/IP69K | IP69 | |
| Dimensions | 166.5×78.2×8.6 mm | 163.0×76.8×8.2 mm | |
| Weight | 219 g | 230 g | |
| Launch price | $269 | $950 |
Camera comparison
Realme C100 4G
- Main: 50MP f/1.8
- Front: 8MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Realme C100 4G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
Realme C100 4G
- 8000 mAh
- Wired: 15W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared Realme C100 4G and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Realme C100 4G by 91.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $681. Realme C100 4G was $681 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra significantly outperforms the Realme C100 4G (99/100 vs 29/100).
display
In the "display" category, the Vivo X300 Ultra significantly outperforms the Realme C100 4G (89/100 vs 55/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Realme C100 4G (96/100 vs 30/100).
battery
In the "battery" category, the Vivo X300 Ultra notably outperforms the Realme C100 4G (85/100 vs 58/100).
portability
In the "portability" category, the Realme C100 4G and the Vivo X300 Ultra are nearly equal (41/100 vs 39/100).
Frequently asked questions
Which is better: the Realme C100 4G or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the Realme C100 4G by 53 points (91/100 vs 38/100).
What is the rating of the Realme C100 4G and the Vivo X300 Ultra?
The Realme C100 4G has a MobileRank rating of 38/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Realme C100 4G or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 30/100).
Which is more powerful: the Realme C100 4G or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 29/100).
Should you choose the Realme C100 4G over the Vivo X300 Ultra?
The Vivo X300 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.