iQOO 15 Ultra vs Vivo X300 Ultra
100Performance93.3
90.4Display82.3
65.5Camera84.6
90.2Battery91.5
86.7Features84
5 spec wins — iQOO 15 Ultra7 spec wins — Vivo X300 Ultra
InnoReviews verdict
This one is close to a dead heat: iQOO 15 Ultra scores 87.9 against 88.1 for Vivo X300 Ultra. Pick by the categories that matter to you — Vivo X300 Ultra edges ahead in camera and battery, or by price.
Which would you pick?
Key differences
Reasons to pick the iQOO 15 Ultra
- Stronger performance score: 100 vs 93
- Stronger display score: 90 vs 82
- 78% higher Peak brightness: 8,000 nits vs 4,500 nits
- 50% higher RAM (max): 24 GB vs 16 GB
- 12% higher capacity: 7,400 mAh vs 6,600 mAh
Reasons to pick the Vivo X300 Ultra
- Stronger camera score: 85 vs 66
- 300% higher Main camera: 200 MP vs 50 MP
- 300% higher telephoto: 200 MP vs 50 MP
- 56% higher Front camera: 50 MP vs 32 MP
- 23% higher Optical zoom: 3.7 x vs 3 x
Display
| Spec | iQOO 15 Ultra | Vivo X300 Ultra |
|---|---|---|
| Screen size | 6.85 ″ | 6.82 ″ |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1440x3168 | 1440x3168 |
| Pixel density | 508 ppi | 510 ppi |
| Refresh rate | 144 Hz | 144 Hz |
| Peak brightness | 8,000 nits+78% | 4,500 nits |
| Screen-to-body | — | 90.3 % |
Performance
| Spec | iQOO 15 Ultra | Vivo X300 Ultra |
|---|---|---|
| Chipset | Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite Gen 5 |
| AnTuTu | — | 4,085,695 |
| Geekbench 6 (single) | — | 3,730Top 3% |
| Geekbench 6 (multi) | — | 11,494Top 3% |
| RAM (max) | 24 GB+50% | 16 GB |
| Storage options | 256GB/512GB/1TB | 256/512GB/1TB |
| Storage type | UFS 4.1 | UFS 4.1 |
Camera
| Spec | iQOO 15 Ultra | Vivo X300 Ultra |
|---|---|---|
| Main camera | 50 MP | 200 MP+300% |
| Main aperture | f/1.88 | f/1.9 |
| Ultra-wide | 50 MP | 50 MP |
| Telephoto | 50 MP | 200 MP+300% |
| Optical zoom | 3 x | 3.7 x+23% |
| Max video | 8K@30fps | 8K@30fps |
| Front camera | 32 MP | 50 MP+56% |
| OIS | Yes | Yes |
Battery
| Spec | iQOO 15 Ultra | Vivo X300 Ultra |
|---|---|---|
| Capacity | 7,400 mAh+12% | 6,600 mAh |
| Wired charging | 100 W | 100 W |
| Wireless charging | 40 W | 40 W |
| Active use endurance | — | 16 h |
Design
| Spec | iQOO 15 Ultra | Vivo X300 Ultra |
|---|---|---|
| Weight | 227 g+2% | 232 g |
| Thickness | 8.7 mm | 8.2 mm+6% |
| IP rating | IP68/IP69 | IP68/IP69 |
| Frame material | — | Aluminum |
Connectivity
| Spec | iQOO 15 Ultra | Vivo X300 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 6.0 | 5.4 |
| NFC | Yes | Yes |
| USB | USB-C 3.2 Gen 1 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | iQOO 15 Ultra | Vivo X300 Ultra |
|---|---|---|
| OS at launch | Android 16 (OriginOS 6) | Android 16 (OriginOS 6) |
| OS update pledge | — | 5 years |
Audio
| Spec | iQOO 15 Ultra | Vivo X300 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |