Home > Smartphone comparison > X300 FE vs iQOO 15R – which one to choose?

Vivo X300 FE vs iQOO 15R

86 out of 100
Vivo X300 FE
VS
84 out of 100
Vivo iQOO 15R
Vivo X300 FE
Vivo iQOO 15R

Here we compared two smartphones: the 6.31-inch Vivo X300 FE (with Qualcomm Snapdragon 8 Gen 5) that was released on March 4, 2026, against the Vivo iQOO 15R, which is powered by the same chip. 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
Memory
  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery life
  6. Camera
  7. Comments

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Vivo X300 FE
  • The rear camera has a 3x optical zoom
  • Has 50% more RAM: 12GB versus 8GB
  • Handles wireless charging up to 40W
  • Slow-motion recording at 960FPS
  • Supports Dolby Atmos sound technology
  • Ready for eSIM technology
Reasons to consider the Vivo iQOO 15R
  • Comes with 1100 mAh larger battery capacity: 7600 vs 6500 mAh
  • Higher display refresh rate – 144 Hz
  • Supports higher wattage charging (100W versus 90W)

Review

Evaluation of Vivo X300 FE and iQOO 15R crucial features
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
X300 FE
83*
iQOO 15R
74*
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
X300 FE
87*
iQOO 15R
94*
Connectivity
Networks, ports, data transmission
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
NanoReview Score
Final comparison evaluation
X300 FE
86*
iQOO 15R
84*
Select your primary usage scenario to get a more accurate NanoReview Score
πŸ“± Primary usage:

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
8 / 256 GB
75.3
(Good)
Value Index
101.9
(Excellent)

Tests and specifications

Comparison table of technical specifications and tests
Phone:
X300 FE
vs
iQOO 15R

Display

Type AMOLED AMOLED
Size 6.31 inches 6.59 inches
Resolution 1260 x 2800 pixels 1260 x 2750 pixels
Aspect ratio 19.5:9 19.5:9
PPI 461 ppi 459 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (60-120 Hz)
Max rated brightness 1800 nits 1800 nits
Max rated brightness in HDR 5000 nits 5000 nits
HDR support Yes, HDR10+ Yes, HDR10+
Touch sampling rate 300 Hz 360 Hz
Screen protection Tempered glass Tempered glass
Screen-to-body ratio 90.3% 90.8%
Display features - DCI-P3
- Always-On Display
- DC Dimming		 - DCI-P3
- Always-On Display
- DC Dimming
Display tests
RGB color space 99.8% -
PWM 360 Hz -
Response time 1 ms -
Contrast ∞ Infinity -
Screen space comparison
iQOO 15R
6.59β€³ (19.5:9 ratio) = 16.5 in2
X300 FE
6.31β€³ (19.5:9 ratio) = 15.1 in2
~9% more screen space
Peak brightness test (auto)
X300 FE
1070 nits
iQOO 15R
n/a
Sources: NotebookCheck [3]

Design and build

Height 150.83 mm (5.94 inches) 157.61 mm (6.21 inches)
Width 71.76 mm (2.83 inches) 74.42 mm (2.93 inches)
Thickness 7.99 mm (0.31 inches) 7.9 mm (0.31 inches)
Weight 190 g (6.7 oz) 202 g (7.13 oz)
Waterproof IP69 IP69
Advanced cooling Vapor chamber Vapor chamber
Rear material Glass Glass
Frame material Metal Metal
Colors White, Black, Purple Black, Silver
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio
X300 FE
90.3%
iQOO 15R +1%
90.8%

Performance

Chipset specifications of Vivo X300 FE and Vivo iQOO 15R
SoC
Chipset Qualcomm Snapdragon 8 Gen 5 Qualcomm Snapdragon 8 Gen 5
Max clock 3800 MHz 3800 MHz
CPU cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6 cores at 3.32 GHz: Oryon Performance
- 2 cores at 3.8 GHz: Oryon Prime		 - 6 cores at 3.32 GHz: Oryon Performance
- 2 cores at 3.8 GHz: Oryon Prime
L3 cache 6 MB 6 MB
Manufacturing TSMC TSMC
Lithography process 3 nanometers 3 nanometers
Neural processor (NPU) Hexagon Hexagon
GPU
Graphics Adreno 829 Adreno 829
GPU shading units 1024 1024
GPU clock 1225 MHz 1225 MHz
FLOPS ~2508.8 GFLOPS ~2508.8 GFLOPS

Benchmarks

Benchmark comparison of Vivo X300 FE and Vivo iQOO 15R
Geekbench 6 (Single-Core)
X300 FE +2%
2818
iQOO 15R
2766
Geekbench 6 (Multi-Core)
X300 FE +1%
9052
iQOO 15R
8923
Compute Score (GPU)
X300 FE
16659
iQOO 15R +4%
17303
Compute Score (GPU) 16659 17303
Single-core score 2818 2766
Multi-core score 9052 8923
Sources: Geekbench [3], [4]
AnTuTu Benchmark 11
X300 FE
2869139
iQOO 15R +6%
3047741
CPU 861821 899582
GPU 1005345 1036833
Memory 381541 415773
UX 620432 695553
Total score 2869139 3047741
Samples Less than 3 [24 tests]
AnTuTu 11 Ranking List (128th and 103rd place)
Submit your benchmark results

Recent User Tests

The latest benchmark tests that have been submitted by users
Vivo X300 FE
DateBenchmarkResult
πŸ“˜ 2026-09-20 (Omar)AnTuTu 123231104
Add View all (1)
Vivo iQOO 15R
DateBenchmarkResult
πŸ“˜ 2026-09-26 (johnny)AnTuTu 123101545
πŸ“˜ 2026-09-25 (Izumi)AnTuTu 123394118
πŸ“˜ 2026-09-24 (Max)AnTuTu 123215528
πŸ“˜ 2026-09-22 (Zenn Kanata)AnTuTu 122966135
πŸ“˜ 2026-09-11 (Bobo_haram)AnTuTu 113082479
Add View all (36)

Memory

RAM
RAM size 12 GB 8 GB
Memory type LPDDR5X LPDDR5X
Memory clock - 5300 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 OriginOS 6
OS size 27 GB -
OS updates 5 years 5 years
Security updates 7 years 5 years

Battery

Capacity 6500 mAh 7600 mAh
Max charge power 90 W 100 W
Battery type Silicon-Carbon (Si/C) Silicon-Carbon (Si/C)
Replaceable No No
Wireless charging Yes (40 W) No
Reverse charging Yes Yes
Bypass charging - Yes
Fast charging Yes (48% in 30 min) Yes (53% in 30 min)
Full charging time 0:58 hr 0:57 hr
Add your battery life

Main camera

Matrix 50 megapixels 50 megapixels
Image resolution 8192 x 6144 8192 x 6144
Zoom Optical, 3x Digital (lossless), 2x
Flash LED Dual LED
Stabilization Optical Optical
8K video recording No No
4K video recording Up to 60FPS Up to 60FPS
1080p video recording Up to 60FPS Up to 60FPS
Slow motion 960 FPS (1080p) 240 FPS (1080p)
Angle of widest lens 110Β° -
Lenses 1) Standard: 50 MP
2) Telephoto: 50 MP
3) Ultrawide: 8 MP
1) Standard: 50 MP
2) Ultrawide: 8 MP
Camera features - Bokeh mode
- Pro mode
- RAW support		 - Bokeh mode
- Pro mode
Standard lens
Image resolution 50 MP 50 MP
Aperture f/1.6 f/1.8
Focal length 23 mm -
Sensor Sony IMX921 Sony LYT-700V
Sensor size 1/1.56" (β‰ˆ 0.64 inch) 1/1.56" (β‰ˆ 0.64 inch)
Pixel size 1 micron 1 micron
Autofocus Phase autofocus Phase autofocus
Stabilization Optical Optical
Telephoto lens
Image resolution 50 MP -
Aperture f/2.6 -
Focal length 70 mm -
Sensor Sony IMX882 -
Sensor size 1/1.95" (β‰ˆ 0.51 inch) -
Pixel size 0.8 micron -
Stabilization Optical -
Ultra-wide lens
Image resolution 8 MP 8 MP
Aperture f/2.2 f/2.2
Focal length 15 mm 15 mm
Sensor size 1/4.0" (β‰ˆ 0.25 inch) 1/4.0" (β‰ˆ 0.25 inch)
Pixel size 1.12 micron -
Stabilization Digital Digital

Selfie camera

Megapixels 50 megapixels 32 megapixels
Image resolution 8192 x 6144 6528 x 4896
Aperture f/2.0 f/2.2
Focal length 21 mm -
Sensor Samsung S5KJN1 GalaxyCore GC32E1
Sensor size 1/2.76" (β‰ˆ 0.36 inch) 1/3.1" (β‰ˆ 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 2 2
USB features - Charging
- USB-Storage mode
- OTG		 - Charging
- USB-Storage mode
- OTG
DisplayPort No 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 No
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
X300 FE
79.9 dB
iQOO 15R
n/a

Other

Category Flagship Mid-range
Announced March 2026 February 2026
Release date March 2026 March 2026
Launch price (MSRP) $649 $495
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint		 - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
Bundled charger Yes, 90 W Yes, 100 W
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the camera, connectivity, and sound are more important to you, then choose the Vivo X300 FE. But if the battery life is more of a priority – go for the Vivo iQOO 15R.

Cast your vote

So, which phone would you choose?
52 (74.3%)
18 (25.7%)
Total votes: 70

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