Home Phone comparison Samsung Galaxy S25 Ultra and Oppo Realme 8 - Which is better?

Samsung Galaxy S25 Ultra vs Oppo Realme 8

94 out 100
Samsung Galaxy S25 Ultra
VS
47 out 100
Oppo Realme 8
Samsung Galaxy S25 Ultra
Oppo Realme 8

Compared 2 smartphones : Samsung Galaxy S25 Ultra Manufactured in February, 2025, with display 6.9 with chipsetQualcomm Snapdragon 8 Elite, vs Oppo Realme 8, Manufactured in March, 2021with chipsetMediaTek Helio G95. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy S25 Ultra
  • Larger display: 6.9in
  • Higher pixel density: 498ppi
  • Higher refresh rate: 120Hz
  • Newer Bluetooth version: 5.4 vs 5.1
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Oppo Realme 8
  • Lighter design: 177g vs 218g

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 12/512 GB
- 12/1024 GB
- 16/1024 GB		 - 4/64 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB

Review

Key Specs Samsung Galaxy S25 Ultra and Oppo Realme 8
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Galaxy S25 Ultra
vs
Oppo Realme 8

Display

Display quality comparison
Type Dynamic AMOLED Super AMOLED
Size 6.9 in 6.4 in
Resolution 1440x3120 pixels 1080x2400 pixels
Aspect ratio 19.5:9 20:9
Pixel density 498 ppi 411 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate Yes (1-120 Hz) No
Max brightness 2600 nits 430 nits
HDR support Yes HDR10+ Yes HDR10
Touch Sampling Rate 240 Hz 180 Hz
Screen-to-body ratio 92.4 % 83.3 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy S25 Ultra
1403 nits
Oppo Realme 8
601 nits
sRGB gamut97.7 %90.7 %
PWM (Flicker)240 Hz255 Hz
Response time1 ms8 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Samsung Galaxy S25 Ultra], [Oppo Realme 8]

Design & Build

Design and ergonomics comparison
Height 162.8 mm (6.41 in) 160.6 mm (6.32 in)
Width 77.6 mm (3.06 in) 73.9 mm (2.91 in)
Thickness 8.2 mm (0.32 in) 8 mm (0.31 in)
Weight 218 g (7.69 oz) 177 g (6.24 oz)
Water resistance IP68 No
Cooling system Vapor chamber n/a
Back panel Glass Plastic
Frame Metal Plastic
Colors - Black
- Silver
- Gray
- Blue		 - Black
- Silver
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Samsung Galaxy S25 Ultra
92.4 %
Oppo Realme 8
83.3 %

Performance

Testing Samsung Galaxy S25 Ultra and Oppo Realme 8 In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite MediaTek Helio G95
Max Frequency 4470 MHz 2050 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))		 - 6/2 (Cortex-A55)
- 2/2.05 (Cortex-A76)
Process TSMC TSMC
Transistor Size 3 nm 12 nm
Neural Processor Hexagon MediaTek APU
Graphics Adreno 830 Mali-G76 MP4
GPU Cores 1536 144
GPU Frequency 1100 MHz 900 MHz
FLOPS 3379.2 GFLOPS 259.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S25 Ultra
3147
Oppo Realme 8
628
Geekbench 6 (Multi-Core)
Samsung Galaxy S25 Ultra
9750
Oppo Realme 8
1725
Geekbench 6 (Single-Core)3147628
Geekbench 6 (Multi-Core)97501725
Geekbench Compute (GPU)25681n/a
Sources: Geekbench v6 [Samsung Galaxy S25 Ultra]
AnTuTu 10
AnTuTu 10
Samsung Galaxy S25 Ultra
2795139
Oppo Realme 8
400185
CPU659871121827
GPU129416795212
Memory47131980801
UX369782102345
NanoReview Score2795139400185
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S25 Ultra
n/a
Oppo Realme 8
1481
Max Surface Temp.n/a50.4 °C
Stabilityn/a89 %
Graphics Testn/a8 fps
Graphics Scoren/a1481
Sources: 3DMark [Oppo Realme 8]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S25 Ultra
n/a
Oppo Realme 8
10115
Writing scoren/a12372
Web scoren/a7915
Video editingn/a6789
Data manipulationn/a6022
NanoReview Scoren/a10115

Memory

RAM
RAM Size - 12 GB
- 16 GB		 - 4 GB
- 6 GB
- 8 GB
Memory Type LPDDR5X LPDDR4X
Memory Frequency 5333 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity- 256 GB
- 512 GB
- 1024 GB		- 64 GB
- 128 GB
Storage TypeUFS 4.0UFS 2.1
Memory CardNoMicroSD

Software

OS Android 15 Android 11 (Upgradeable to Android 13)
OS Size 30.4 GB 10 GB
UI Skin One UI 7.0 Realme UI 4.0

Battery

Volume 5000 mAh 5000 mAh
Max Charging Power 45 W 30 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging Yes (25 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (72% in 30 min) Yes (50% in 26 min)
Full Charge Time 0:59 h 1:10 h
Battery Life Test
Battery Life
Samsung Galaxy S25 Ultra
31:10
Oppo Realme 8
n/a
Web Browsing11:10 hn/a
Video Playback19:32 hn/a
Games06:22 hn/a
Standby Mode160 hn/a

Main camera

Matrix 200 MP 64 MP
Photo resolution 16320x12240 pixels 9248x6920 pixels
Zoom Optical, 5x Digital
Flash LED LED
Stabilization Optical Digital
8K Recording Yes (Up to 30 fps) No
4K Recording Yes (Up to 120 fps) Yes (Up to 30 fps)
1080p Recording Yes (Up to 240 fps) Yes (Up to 60 fps)
Slow Motion 240 fps (1080p) 120 fps (1080p)
Wide-angle lens 120 ° 119 °
Lenses count Standard: 200 MP
Telephoto: 50 MP
Telephoto: 12 MP
Ultra-wide: 50 MP		 Standard: 64 MP
Ultra-wide: 8 MP
Macro: 2 MP
Monochrome: 2 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix200 MP64 MP
Aperturef/1.7f/1.8
Focal length23 mm26 mm
SensorSamsung ISOCELL S5KHP2Omnivision OV64B
Sensor size1/1.31/2
Pixel size0.6 μm0.7 μm
AutofocusPhase autofocusPhase autofocus
StabilizationOpticalDigital
Telephoto
Matrix50 MPn/a
Aperturef/3.4n/a
Focal length111 mmn/a
SensorSony IMX854n/a
Sensor size1/2.52n/a
Pixel size0.7 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix50 MP8 MP
Aperturef/1.9f/2.3
Focal length13 mm16 mm
SensorSamsung ISOCELL S5KJN3n/a
Sensor size1/2.51/4.0
Pixel size0.7 μm1.12 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy S25 Ultra
144
Oppo Realme 8
n/a
Video quality
Samsung Galaxy S25 Ultra
143
Oppo Realme 8
n/a
Overall camera score
Samsung Galaxy S25 Ultra
146
Oppo Realme 8
n/a
Bokeh70n/a
Preview81n/a
Zoom149n/a
Sources: DxOMark [Samsung Galaxy S25 Ultra]

Front camera

Matrix 12 MP 16 MP
Photo resolution 4000x3000 pixels 4920x3264 pixels
Aperture f/2.2 f/2.5
Focal length 26 mm n/a
Sensor Samsung S5K3LU Sony IMX471
Sensor size 1/3.2 1/3.0
Pixel size 1.12 μm 1 μm
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 120 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.4 5.1
Bluetooth features LE LE, A2DP
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes DP 1.2 n/a
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port No No
Connectivity
SIM Count*12
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM850, GSM900, DCS1800, PCS1900GSM 850/900/1800/1900
3G BandsUMTS B1(2100),B2(1900),B4(AWS),B5(850),B8(900)WCDMA 1/5/8
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B18/B19/B20/B25/B26/B28/B29/B30/B66/B71)LTE (B1/B3/B5/B8/B38/B40/B41)
LTE categoryn/a12
5G SupportYesNo

Sound

Speakers Stereo Mono
3.5 mm Jack No Yes
FM Radio No No
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy S25 Ultra
93 dB
Oppo Realme 8
80.9 dB

Other

Class Flagship Mid-range
Announced January, 2025 yr March, 2021 yr
Release Date February, 2025 yr March, 2021 yr
Launch Price ($) 1299 200
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No n/a

Note

Samsung Galaxy S25 Ultra:

Supports up to 2 eSIMs. The international model has 2 physical SIM slots, while the U.S. version has 1.","Uses Grade 5 titanium and Corning Gorilla Armor 2 glass on both sides.

* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S25 Ultra the clear winner in this comparison.

Survey

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