Vivo iQOO 15 Ultra vs Vivo X300 E
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo X300 E (2026) runs on the Qualcomm Snapdragon 8 Gen 5; estimated prices are $799 and $651. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 81/100 (a 8-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 7200); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 3,068,952); the Vivo X300 E is noticeably lighter (200g vs 227g).
Vivo iQOO 15 Ultra
Vivo X300 E
- Higher AnTuTu: 4602290 vs 3068952
- Better Geekbench Single: 3640 vs 2903
- Better Geekbench Multi: 11033 vs 9602
- Bigger battery: 7400 vs 7200 mAh
- Faster charging: 120W vs 90W
- Higher performance (99/100 vs 91/100)
- Better camera (78/100 vs 64/100)
- Longer battery life (92/100 vs 83/100)
- Better display (99/100 vs 94/100)
- Lighter: 200g vs 227g
- Cheaper: $651 vs $799
- Better portability (61/100 vs 35/100)
Comparing the Vivo iQOO 15 Ultra vs the Vivo X300 E, the Vivo iQOO 15 Ultra scores 8 points higher (89/100 vs 81/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 64/100). In the "performance" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 91/100). In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100). In the "camera" category, the Vivo iQOO 15 Ultra is a bit better (78/100 vs 64/100). In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (92/100 vs 83/100). In the "portability" category, the Vivo X300 E notably outperforms the Vivo iQOO 15 Ultra (61/100 vs 35/100).
| Specification | Vivo iQOO 15 Ultra | Vivo X300 E | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Gen 5 | |
| AnTuTu | 4602290 | 3068952 | |
| Geekbench Single | 3640 | 2903 | |
| Geekbench Multi | 11033 | 9602 | |
| Display | 6.8" LTPO AMOLED | 6.6" AMOLED | |
| Resolution | 1440x3168 | 1260x2750 | |
| Refresh rate | 144 Hz | 144 Hz | |
| Battery | 7400 mAh | 7200 mAh | |
| Charging | 120W | 90W | |
| Wireless charging | 50W | — | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 8 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 50 MP | |
| RAM | 12GB / 16GB / 24GB | 12GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 8000 nits | 5000 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 163.7×76.8×8.7 mm | 157.5×74.3×7.8 mm | |
| Weight | 227 g | 200 g | |
| Price | $799 | $651 |
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo X300 E
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 50MP
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo X300 E
- 6.6" AMOLED
- Resolution: 1260x2750
- Refresh rate: 144 Hz
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo X300 E
- 7200 mAh
- Wired: 90W
- Wireless charging: no data
We compared Vivo iQOO 15 Ultra and Vivo X300 E, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Vivo X300 E by 50.0% in our overall performance rating.
Price difference: $148. Vivo X300 E is cheaper by $148.
performance
In the "performance" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 91/100).
display
In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra is a bit better (78/100 vs 64/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra is a bit better (92/100 vs 83/100).
portability
In the "portability" category, the Vivo X300 E notably outperforms the Vivo iQOO 15 Ultra (61/100 vs 35/100).
Which is better: the Vivo iQOO 15 Ultra or the Vivo X300 E?
The Vivo iQOO 15 Ultra edges out the Vivo X300 E by just 8 points — the two devices are very close in overall level.
What is the rating of the Vivo iQOO 15 Ultra and the Vivo X300 E?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo X300 E — 81/100.
Which has the better camera: the Vivo iQOO 15 Ultra or the Vivo X300 E?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 64/100).
Which is more powerful: the Vivo iQOO 15 Ultra or the Vivo X300 E?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 91/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo X300 E?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life. The Vivo X300 E is a better fit for gamers and power users, those who care about battery life.