Vivo X300 Ultra vs OnePlus 15

92 out of 100
Vivo X300 Ultra
VS
93 out of 100
OnePlus 15

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 OnePlus 15, which is powered by Qualcomm Snapdragon 8 Elite Gen 5 and came out 5 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

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Memory

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Vivo X300 Ultra
  • The rear camera has a 3.7x optical zoom
  • 13% higher pixel density (510 vs 450 PPI)
  • Supports Dolby Atmos sound technology
Reasons to consider the OnePlus 15
  • Shows 34% longer battery life (39:14 vs 29:11 hours)
  • Higher display refresh rate – 165 Hz
  • Comes with 700 mAh larger battery capacity: 7300 vs 6600 mAh
  • Slow-motion recording at 480FPS
  • Supports higher wattage charging (120W versus 100W)
  • Weighs 21 grams less

Review

Evaluation of Vivo X300 Ultra and OnePlus 15 crucial features
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.
DeviceFacts Score
Final comparison evaluation
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Value for money (Beta)

To get an accurate value-for-money index, update the default prices with actual prices from your country’s retailers (for the selected memory configs) and press the "Calculate" button.
Currency
12 / 256 GB
VS
12 / 256 GB
38.6
(Mediocre)
Value Index
66.9
(Good)

Tests and specifications

Comparison table of technical specifications and tests

Display

Type AMOLED AMOLED
Size 6.82 inches 6.78 inches
Resolution 1440 x 3168 pixels 1272 x 2772 pixels
Aspect ratio 19.8:9 19.5:9
PPI 510 ppi 450 ppi
Refresh rate 144 Hz 165 Hz
Adaptive refresh rate Yes (1-144 Hz) Yes (1-120 Hz)
Max rated brightness 1800 nits 1800 nits
Max rated brightness in HDR 4500 nits 6000 nits
HDR support Yes, Dolby Vision Yes, Dolby Vision
Touch sampling rate - 330 Hz
Screen protection Armor glass Gorilla Glass Victus 2
Screen-to-body ratio 90.3% 91.2%
Display features - DCI-P3
- Always-On Display
- DC Dimming
- DCI-P3
- Always-On Display
- DC Dimming
Display tests
RGB color space 99.8% 99.9%
PWM 110 Hz 120 Hz
Response time 1 ms 3 ms
Contrast ∞ Infinity ∞ Infinity
Peak brightness test (auto)
3334 nits
3413 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 162.98 mm (6.42 inches) 161.42 mm (6.36 inches)
Width 76.81 mm (3.02 inches) 76.67 mm (3.02 inches)
Thickness 8.49 mm (0.33 inches) 8.1 mm (0.32 inches)
Weight 232 g (8.18 oz) 211 g (7.44 oz)
Waterproof IP69 IP69
Advanced cooling Vapor chamber Vapor chamber
Rear material Glass Glass
Frame material Metal Metal
Colors White, Black, Green Black, Gold, Purple
Fingerprint scanner Yes, in-display Yes, in-display
Repairability Good (3/5) Good (3.69/5)
Drop resistance Very good (B) · 180 drops Good (C) · 90 drops
Screen-to-body ratio
90.3%
91.2%

Performance

Chipset specifications of Vivo X300 Ultra and OnePlus 15
SoC
Chipset Qualcomm Snapdragon 8 Elite Gen 5 Qualcomm Snapdragon 8 Elite Gen 5
Max clock 4608 MHz 4600 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
GPU
Graphics Adreno 840 Adreno 840
GPU shading units 1536 1536
GPU clock 1300 MHz 1300 MHz
FLOPS ~3993.6 GFLOPS ~3993.6 GFLOPS

Benchmarks

Benchmark comparison of Vivo X300 Ultra and OnePlus 15
Geekbench 6 (Single-Core)
3784
3607
Geekbench 6 (Multi-Core)
11394
10732
Compute Score (GPU)
X300 Ultra +12%
27357
24461
Compute Score (GPU) 27357 24461
Single-core score 3784 3607
Multi-core score 11394 10732
Sources: Geekbench [3], [4]
AnTuTu Benchmark 11
4247433
4008294
CPU 1192014 1184036
GPU 1543938 1490867
Memory 525105 402813
UX 986376 930578
Total score 4247433 4008294
Samples [2 tests] [45 tests]
3DMark Steel Nomad Light
Stability - 78%
Graphics test - 20 FPS
Graphics score - 2699
3DMark Solar Bay
Graphics test - 48 FPS
Section 1 - 56 FPS
Section 2 - 47 FPS
Section 3 - 39 FPS
Graphics score - 12540
Sources: 3DMark [5]
PCMark 3.0
Web score - 15531
Video editing - 6678
Photo editing - 26644
Data manipulation - 14971
Writing score - 20874
AnTuTu 11 Ranking List (18th and 27th place)

Recent User Tests

The latest benchmark tests that have been submitted by users
Vivo X300 Ultra
DateBenchmarkResult
📘 2026-09-25 (mnkotyra12)AnTuTu 124156344
📘 2026-09-12 (InphaseCosine18)AnTuTu 124098185
📘 2026-09-06 (Dipshit6769)AnTuTu 113835023
📘 2026-08-17 (Razor97FF)Geekbench 6 CPU3784 / 11394
📘 2026-08-17 (Razor97FF)AnTuTu 114175239
OnePlus 15
DateBenchmarkResult
📘 2026-09-26 (ASCO🇺🇿)AnTuTu 123842868
📘 2026-09-08 -> aleshkaAnTuTu 123914618
📘 2026-09-05 (Mehdi)AnTuTu 113651261
📘 2026-08-24 -> Ang3L4DAnTuTu 114057387
📘 2026-08-15 (YurOk)AnTuTu 113870500

Memory

RAM
RAM size 12 GB 12 GB
Memory type LPDDR5X LPDDR5X
Memory clock 5300 MHz 5333 MHz
Channels 4 4
Storage
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 OxygenOS 16
OS size 60 GB 26 GB
OS updates 5 years 4 years
Security updates 7 years 6 years

Battery

Capacity 6600 mAh 7300 mAh
Max charge power 100 W 120 W
Battery type Silicon-Carbon (Si/C) Silicon-Carbon (Si/C)
Replaceable No No
Wireless charging Yes (40 W) Yes (50 W)
Reverse charging Yes Yes, (wireless)
Bypass charging Yes Yes
Fast charging Yes (66% in 30 min) Yes (50% in 15 min)
Full charging time 0:46 hr 0:43 hr
Battery cycles 1200 cycles 1100 cycles
Battery life tests
Web browsing 10:18 hr 18:32 hr
Watching video 20:51 hr 28:44 hr
Gaming 06:43 hr 10:01 hr
Standby 137 hr 139 hr
General battery life
29:11 hr
OnePlus 15 +34%
39:14 hr

Main camera

Matrix 200 megapixels 50 megapixels
Image resolution 16320 x 12256 8192 x 6144
Zoom Optical, 3.7x Optical, 3.5x
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 120FPS
1080p video recording Up to 120FPS Up to 120FPS
Slow motion 240 FPS (1080p) 480 FPS (720p)
Angle of widest lens 116° 116°
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
Standard lens
Image resolution 200 MP 50 MP
Aperture f/1.9 f/1.8
Focal length 35 mm 24 mm
Sensor Sony LYT-901 Sony IMX906
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
Telephoto lens
Image resolution 200 MP 50 MP
Aperture f/2.7 f/2.8
Focal length 85 mm 85 mm
Sensor Samsung ISOCELL HP0 Samsung S5KJN5
Sensor size 1/1.4" (≈ 0.71 inch) 1/2.76" (≈ 0.36 inch)
Pixel size 0.56 micron 0.64 micron
Stabilization Optical Optical
Ultra-wide lens
Image resolution 50 MP 50 MP
Aperture f/2.0 f/2.0
Focal length 14 mm 16 mm
Sensor Sony LYT-818 OmniVision OV50D
Sensor size 1/1.28" (≈ 0.78 inch) 1/2.88" (≈ 0.35 inch)
Pixel size 1.22 micron 0.612 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 6560 x 4928
Aperture f/2.5 f/2.4
Focal length 24 mm 21 mm
Sensor Samsung ISOCELL JN5 Sony IMX709
Sensor size 1/2.76" (≈ 0.36 inch) 1/2.74" (≈ 0.36 inch)
Pixel size 0.64 micron 0.64 micron
Autofocus Phase autofocus Phase autofocus
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, NAVIC
NFC* Yes Yes
Infrared port Yes Yes
Network
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
84.3 dB
80.4 dB

Other

Category Flagship Flagship
Announced March 2026 October 2025
Release date April 2026 October 2025
Launch price (MSRP) $1199 $899
SAR (head) 0.99 W/kg -
SAR (body) 1.29 W/kg -
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Hall-effect sensor
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
Bundled charger Not included Not included
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the battery life and software are more important to you, then choose the OnePlus 15. But if the sound is more of a priority – go for the Vivo X300 Ultra.

Cast your vote

So, which phone would you choose?
29 (27.4%)
77 (72.6%)
Total votes: 106

User opinions

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