Vivo X300 Ultra vs iQOO 15
92
out of 100
VS
93
out of 100
Here we compared two flagship smartphones: the 6.82-inch Vivo X300 Ultra (with Qualcomm Snapdragon 8 Elite Gen 5) that was released on March 30, 2026, against the Vivo iQOO 15, which is powered by the same chip and came out 5 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
Select the amount of RAM to evaluate performance and value for money more precisely
Key differences
Reasons to consider the Vivo X300 Ultra
- The rear camera has a 3.7x optical zoom
- Delivers 14% higher peak brightness (3334 against 2937 nits)
- Supports Dolby Atmos sound technology
Reasons to consider the Vivo iQOO 15
- Shows 35% longer battery life (39:26 vs 29:11 hours)
Review
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
Select your primary usage scenario to get a more accurate DeviceFacts Score
Value for money (Beta)
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | AMOLED | AMOLED |
| Size | 6.82 inches | 6.85 inches |
| Resolution | 1440 x 3168 pixels | 1440 x 3168 pixels |
| Aspect ratio | 19.8:9 | 20:9 |
| PPI | 510 ppi | 508 ppi |
| Refresh rate | 144 Hz | 144 Hz |
| Adaptive refresh rate | Yes (1-144 Hz) | Yes (1-120 Hz) |
| Max rated brightness | 1800 nits | 2600 nits |
| Max rated brightness in HDR | 4500 nits | 6000 nits |
| HDR support | Yes, Dolby Vision | Yes, Dolby Vision |
| Screen protection | Armor glass | Tempered glass |
| Screen-to-body ratio | 90.3% | 90.2% |
| Display features | - DCI-P3 - Always-On Display - DC Dimming |
- DCI-P3 - Always-On Display - DC Dimming |
| RGB color space | 99.8% | 100% |
| PWM | 110 Hz | 561 Hz |
| Response time | 1 ms | 1 ms |
| Contrast | ∞ Infinity | ∞ Infinity |
Peak brightness test (auto)
Design and build
| Height | 162.98 mm (6.42 inches) | 163.65 mm (6.44 inches) |
| Width | 76.81 mm (3.02 inches) | 76.8 mm (3.02 inches) |
| Thickness | 8.49 mm (0.33 inches) | 8.1 mm (0.32 inches) |
| Weight | 232 g (8.18 oz) | 220 g (7.76 oz) |
| Waterproof | IP69 | IP69 |
| Advanced cooling | Vapor chamber | Vapor chamber |
| Rear material | Glass | Glass |
| Frame material | Metal | Metal |
| Colors | White, Black, Green | White, Black, Blue |
| Fingerprint scanner | Yes, in-display | Yes, in-display |
| Repairability | Good (3/5) | - |
| Drop resistance | Very good (B) · 180 drops | - |
Screen-to-body ratio
Performance
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite Gen 5 |
| Max clock | 4608 MHz | 4610 MHz |
| CPU cores | 8 (2 + 6) | 8 (2 + 6) |
| Architecture | - 6 cores at 3.63 GHz: Oryon Gen 3 Performance - 2 cores at 4.74 GHz: Oryon Gen 3 Prime |
- 6 cores at 3.63 GHz: Oryon Gen 3 Performance - 2 cores at 4.74 GHz: Oryon Gen 3 Prime |
| L3 cache | 8 MB | 8 MB |
| Manufacturing | TSMC | TSMC |
| Lithography process | 3 nanometers | 3 nanometers |
| Neural processor (NPU) | Hexagon | Hexagon |
| Graphics | Adreno 840 | Adreno 840 |
| GPU shading units | 1536 | 1536 |
| GPU clock | 1300 MHz | 1300 MHz |
| FLOPS | ~3993.6 GFLOPS | ~3993.6 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Compute Score (GPU)
| Compute Score (GPU) | 27357 | 27247 |
| Single-core score | 3784 | 3584 |
| Multi-core score | 11394 | 11143 |
AnTuTu Benchmark 11
| CPU | 1192014 | 1112833 |
| GPU | 1543938 | 1494722 |
| Memory | 525105 | 442350 |
| UX | 986376 | 900177 |
| Total score | 4247433 | 3950082 |
| Samples | [2 tests] | [24 tests] |
3DMark Steel Nomad Light
| Stability | - | 54% |
| Graphics test | - | 21 FPS |
| Graphics score | - | 2806 |
3DMark Solar Bay
| Graphics test | - | 46 FPS |
| Section 1 | - | 52 FPS |
| Section 2 | - | 46 FPS |
| Section 3 | - | 40 FPS |
| Graphics score | - | 12156 |
3DMark Wild Life Extreme
| Graphics test | - | 40 FPS |
| Graphics score | - | 6752 |
PCMark 3.0
| Web score | - | 14169 |
| Video editing | - | 6652 |
| Photo editing | - | 35337 |
| Data manipulation | - | 14682 |
| Writing score | - | 29367 |
AnTuTu 11 Ranking List (18th and 31st place)
Recent User Tests
Vivo X300 Ultra
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-09-25 (mnkotyra12) | AnTuTu 12 | 4156344 |
| 📘 2026-09-12 (InphaseCosine18) | AnTuTu 12 | 4098185 |
| 📘 2026-09-06 (Dipshit6769) | AnTuTu 11 | 3835023 |
| 📘 2026-08-17 (Razor97FF) | Geekbench 6 CPU | 3784 / 11394 |
| 📘 2026-08-17 (Razor97FF) | AnTuTu 11 | 4175239 |
Vivo iQOO 15
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-10-04 (fastboot) | AnTuTu 12 | 4280996 |
| 📘 2026-10-04 (Хан) | AnTuTu 12 | 4092547 |
| 📘 2026-09-11 (Rtesh) | AnTuTu 11 | 3886893 |
| 📘 2026-09-10 (Ranit) | AnTuTu 11 | 3974227 |
| 📘 2026-08-07 (tt:shikazik) | AnTuTu 11 | 4017492 |
Memory
| RAM size | 12 GB | 12 GB |
| Memory type | LPDDR5X | LPDDR5X |
| Memory clock | 5300 MHz | 5300 MHz |
| Channels | 4 | 4 |
| Storage size | 256 GB | 256 GB |
| Storage type | UFS 4.1 | UFS 4.1 |
| Memory card | No | No |
Software
| Operating system | Android 16 | Android 16 |
| ROM | OriginOS 6 | OriginOS 6 |
| OS size | 60 GB | 57 GB |
| OS updates | 5 years | 5 years |
| Security updates | 7 years | 7 years |
Battery
| Capacity | 6600 mAh | 7000 mAh |
| Max charge power | 100 W | 100 W |
| Battery type | Silicon-Carbon (Si/C) | Silicon-Carbon (Si/C) |
| Replaceable | No | No |
| Wireless charging | Yes (40 W) | Yes (40 W) |
| Reverse charging | Yes | Yes, (wireless) |
| Bypass charging | Yes | Yes |
| Fast charging | Yes (66% in 30 min) | Yes (60% in 30 min) |
| Full charging time | 0:46 hr | 0:52 hr |
| Battery cycles | 1200 cycles | - |
| Web browsing | 10:18 hr | 18:52 hr |
| Watching video | 20:51 hr | 27:27 hr |
| Gaming | 06:43 hr | 09:04 hr |
| Standby | 137 hr | 147 hr |
General battery life
Smartphones With Long Battery Life (60th and 4th place)
Main camera
| Matrix | 200 megapixels | 50 megapixels |
| Image resolution | 16320 x 12256 | 8192 x 6144 |
| Zoom | Optical, 3.7x | Optical, 3x |
| Flash | Dual LED | Dual LED |
| Stabilization | Optical | Optical |
| 8K video recording | Up to 30FPS | Up to 30FPS |
| 4K video recording | Up to 120FPS | Up to 60FPS |
| 1080p video recording | Up to 120FPS | Up to 60FPS |
| Slow motion | 240 FPS (1080p) | 240 FPS (1080p) |
| Angle of widest lens | 116° | 107° |
| Lenses | 1) Standard: 200 MP 2) Telephoto: 200 MP 3) Ultrawide: 50 MP |
1) Standard: 50 MP 2) Telephoto: 50 MP 3) Ultrawide: 50 MP |
| Camera features | - Bokeh mode - Pro mode - RAW support |
- Bokeh mode - Pro mode - RAW support |
| Image resolution | 200 MP | 50 MP |
| Aperture | f/1.9 | f/1.9 |
| Focal length | 35 mm | 23 mm |
| Sensor | Sony LYT-901 | Sony IMX921 |
| Sensor size | 1/1.12" (≈ 0.89 inch) | 1/1.56" (≈ 0.64 inch) |
| Pixel size | 0.7 micron | 1 micron |
| Autofocus | Laser autofocus | Phase autofocus |
| Stabilization | Optical | Optical |
| Image resolution | 200 MP | 50 MP |
| Aperture | f/2.7 | f/2.7 |
| Focal length | 85 mm | 85 mm |
| Sensor | Samsung ISOCELL HP0 | Sony IMX882 |
| Sensor size | 1/1.4" (≈ 0.71 inch) | 1/1.95" (≈ 0.51 inch) |
| Pixel size | 0.56 micron | 0.8 micron |
| Stabilization | Optical | Optical |
| Image resolution | 50 MP | 50 MP |
| Aperture | f/2.0 | f/2.1 |
| Focal length | 14 mm | 15 mm |
| Sensor | Sony LYT-818 | Samsung S5KJN1 |
| Sensor size | 1/1.28" (≈ 0.78 inch) | 1/2.76" (≈ 0.36 inch) |
| Pixel size | 1.22 micron | 0.64 micron |
| Stabilization | Optical | Digital |
DxOMark main camera tests
Photo quality
Video quality
Generic main camera score
| Bokeh | 180 | - |
| Zoom | 172 | - |
| Samples | Photo samples of Vivo X300 Ultra from DxOMark | - |
Selfie camera
| Megapixels | 50 megapixels | 32 megapixels |
| Image resolution | 8192 x 6144 | 6528 x 4896 |
| Aperture | f/2.5 | f/2.2 |
| Focal length | 24 mm | 21 mm |
| Sensor | Samsung ISOCELL JN5 | GalaxyCore GC32E1 |
| Sensor size | 1/2.76" (≈ 0.36 inch) | 1/3.1" (≈ 0.32 inch) |
| Pixel size | 0.64 micron | 0.7 micron |
| Autofocus | Phase autofocus | No |
| Stabilization | Digital | Digital |
| Video resolution | 2160p (4K) at 60 FPS | 2160p (4K) at 60 FPS |
| Depth sensor (TOF 3D) | No | No |
Connectivity
| Wi-Fi standard | Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) | Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) |
| Wi-Fi features | - Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 6.0 | 6.0 |
| Bluetooth features | LE | LE |
| USB type | USB Type-C | USB Type-C |
| USB version | 3.2 | 3.2 |
| USB features | - Charging - USB-Storage mode - OTG |
- Charging - USB-Storage mode - OTG |
| DisplayPort | Yes | Yes |
| GPS | GPS, GLONASS, Beidou, Galileo, QZSS | GPS, GLONASS, Beidou, Galileo, QZSS |
| NFC* | Yes | Yes |
| Infrared port | Yes | Yes |
| Number of SIM* | 2 | 2 |
| Type of SIM card | Nano | Nano |
| Multi SIM mode | Standby | Standby |
| eSIM support* | Yes | Yes |
| Hybrid slot | No | No |
| 5G support | Yes | Yes |
Sound
| Speakers | Stereo | Stereo |
| Headphone audio jack | No | No |
| FM radio | No | No |
| Dolby Atmos | Yes | No |
Speakers test
Max loudness
Other
| Category | Flagship | Flagship |
| Announced | March 2026 | October 2025 |
| Release date | April 2026 | October 2025 |
| Launch price (MSRP) | $1199 | $699 |
| SAR (head) | 0.99 W/kg | - |
| SAR (body) | 1.29 W/kg | - |
| Sensors | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
| Bundled charger | Not included | Yes, 100 W |
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Conclusion
If the battery life is more important to you, then choose the Vivo iQOO 15. But if the camera and sound are more of a priority – go for the Vivo X300 Ultra.
Cast your vote
Total votes: 26
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