Samsung Galaxy S21 Ultra vs Vivo X300 Ultra
The Samsung Galaxy S21 Ultra (2021) runs on the Samsung Exynos 2100, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $1199 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 61/100 (a 30-point difference). Key differences: the Vivo X300 Ultra has the bigger battery (7000 mAh vs 5000); the main camera is 108 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 1,074,182); per DXOMark lab testing, the Vivo X300 Ultra has the stronger camera (170 vs 117).
Profile comparison
Category scores
Samsung Galaxy S21 Ultra
Vivo X300 Ultra
What makes Samsung Galaxy S21 Ultra better?
- Lighter: 228g vs 230g
- Overall rating 61/100
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 1074182
- Better Geekbench Single: 3639 vs 1435
- Better Geekbench Multi: 11047 vs 3555
- Bigger battery: 7000 vs 5000 mAh
- Faster charging: 100W vs 25W
- Better main camera: 200MP vs 108MP
- Faster wireless charging: 40W vs 15W
- Cheaper at launch: $950 vs $1199
- Higher performance (99/100 vs 63/100)
- Better camera (96/100 vs 55/100)
- Longer battery life (85/100 vs 52/100)
- Better portability (39/100 vs 33/100)
Comparison verdict
Comparing the Samsung Galaxy S21 Ultra vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 30 points higher (91/100 vs 61/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 63/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 55/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 52/100). Value score: Samsung Galaxy S21 Ultra — 32/100, 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 Samsung Galaxy S21 Ultra (99/100 vs 63/100). In the "display" category, both devices are on the same level — 89/100. In the "camera" category, the Vivo X300 Ultra significantly outperforms the Samsung Galaxy S21 Ultra (96/100 vs 55/100). In the "battery" category, the Vivo X300 Ultra significantly outperforms the Samsung Galaxy S21 Ultra (85/100 vs 52/100). In the "portability" category, the Vivo X300 Ultra is a bit better (39/100 vs 33/100).
Specs comparison
| Specification | Samsung Galaxy S21 Ultra | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Samsung Exynos 2100 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 1074182 | 4247433 | |
| Geekbench Single | 1435 | 3639 | |
| Geekbench Multi | 3555 | 11047 | |
| Display | 6.8" AMOLED | 6.8" LTPO OLED | |
| Resolution | 3200x1440 | 3168x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5000 mAh | 7000 mAh | |
| Charging | 25W | 100W | |
| Wireless charging | 15W | 40W | |
| DXOMark (camera) | 117 | 170 | |
| Main camera | 108 MP | 200 MP | |
| Ultrawide | 12 MP | 50 MP | |
| Telephoto | 10 MP | 200 MP | |
| Front camera | 40 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 128GB / 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 11 | Android 16 | |
| Brightness (peak) | 1500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | IP69 | |
| Dimensions | 165.1×75.6×8.9 mm | 163.0×76.8×8.2 mm | |
| Weight | 228 g | 230 g | |
| Launch price | $1199 | $950 |
Camera comparison
Samsung Galaxy S21 Ultra
- Main: 108MP f/1.8
- Ultrawide: 12MP
- Telephoto: 10MP
- Front: 40MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Samsung Galaxy S21 Ultra
- 6.8" AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
Samsung Galaxy S21 Ultra
- 5000 mAh
- Wired: 25W
- Wireless: 15W
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 Samsung Galaxy S21 Ultra and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Samsung Galaxy S21 Ultra by 74.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $249. Vivo X300 Ultra was $249 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra significantly outperforms the Samsung Galaxy S21 Ultra (99/100 vs 63/100).
display
In the "display" category, both devices are on the same level — 89/100.
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Samsung Galaxy S21 Ultra (96/100 vs 55/100).
battery
In the "battery" category, the Vivo X300 Ultra significantly outperforms the Samsung Galaxy S21 Ultra (85/100 vs 52/100).
portability
In the "portability" category, the Vivo X300 Ultra is a bit better (39/100 vs 33/100).
Frequently asked questions
Which is better: the Samsung Galaxy S21 Ultra or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the Samsung Galaxy S21 Ultra by 30 points (91/100 vs 61/100).
What is the rating of the Samsung Galaxy S21 Ultra and the Vivo X300 Ultra?
The Samsung Galaxy S21 Ultra has a MobileRank rating of 61/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Samsung Galaxy S21 Ultra or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 55/100).
Which is more powerful: the Samsung Galaxy S21 Ultra or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 63/100).
Should you choose the Samsung Galaxy S21 Ultra over the Vivo X300 Ultra?
The Samsung Galaxy S21 Ultra is a better fit for active users. 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.