Samsung Galaxy S21 Plus vs Samsung Galaxy S8

Compared 2 smartphones : Samsung Galaxy S21 Plus Manufactured in February, 2021, with display 6.7 with chipsetSamsung Exynos 2100, vs Samsung Galaxy S8, Manufactured in April, 2017 with chipsetSamsung Exynos 9 Octa 8895. Below are specs, tests, pros and cons for each device

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy S21 Plus
  • Larger display: 6.7in
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 4800mAh vs 3000mAh
  • Supports newer USB: 3.2 vs 3.1
  • Built-in eSIM
Reasons to choose Samsung Galaxy S8
  • Higher pixel density: 570ppi
  • Lighter design: 155g vs 200g

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB
4/64 GB

Review

Key Specs Samsung Galaxy S21 Plus and Samsung Galaxy S8
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

Display

Display quality comparison
Type Dynamic AMOLED Super AMOLED
Size 6.7 in 5.8 in
Resolution 1080x2400 pixels 1440x2960 pixels
Aspect ratio 20:9 18.5:9
Pixel density 394 ppi 570 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate Yes (48-120 Hz) No
Max brightness 1300 nits 540 nits
HDR support Yes HDR10+ Yes HDR10
Screen-to-body ratio 88.7 % 84.2 %
Features - DCI-P3
- Always-On Display
Always-On Display
Display test
Peak brightness (auto)
Samsung Galaxy S21 Plus
879 nits
Samsung Galaxy S8
614 nits
sRGB gamut98.9 %99.8 %
PWM (Flicker)240 Hz250 Hz
Response time6.2 ms4.4 ms
Contrast∞ Infinite∞ Infinite

Design & Build

Design and ergonomics comparison
Height 161.5 mm (6.36 in) 148.9 mm (5.86 in)
Width 75.6 mm (2.98 in) 68.1 mm (2.68 in)
Thickness 7.8 mm (0.31 in) 8 mm (0.31 in)
Weight 200 g (7.05 oz) 155 g (5.47 oz)
Water resistance IP68 IP68
Back panel Glass Glass
Frame Metal Metal
Colors - Black
- Silver
- Gold
- Red
- Purple
- Black
- Silver
- Gold
- Gray
- Blue
- Red
- Pink
Fingerprint sensor Yes In-Display Yes rear
Screen-to-body ratio
Samsung Galaxy S21 Plus
88.7 %
Samsung Galaxy S8
84.2 %

Performance

Testing Samsung Galaxy S21 Plus and Samsung Galaxy S8 In benchmarks
Processor
Chipset Samsung Exynos 2100 Samsung Exynos 9 Octa 8895
Max Frequency 2840 MHz 2300 MHz
CPU Cores 8 (1 + 3 + 4) 8 (4 + 4)
Architecture - 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)
- 4/1.69 (Cortex-A53)
- 4/2.314 (Exynos M2)
Process Samsung Samsung
Transistor Size 5 nm 10 nm
Neural Processor Yes No
Graphics Mali-G78 MP14 Mali-G71 MP20
GPU Cores 896 320
GPU Frequency 854 MHz 546 MHz
FLOPS 1530.4 GFLOPS 375 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S21 Plus
1428
Samsung Galaxy S8
519
Geekbench 6 (Multi-Core)
Samsung Galaxy S21 Plus
3840
Samsung Galaxy S8
1563
Geekbench 6 (Single-Core)1428519
Geekbench 6 (Multi-Core)38401563
AnTuTu 10
AnTuTu 10
Samsung Galaxy S21 Plus
919348
Samsung Galaxy S8
377103
CPU262973107990
GPU294382116534
Memory14730784213
UX21468668366
NanoReview Score919348377103
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S21 Plus
5538
Samsung Galaxy S8
n/a
Max Surface Temp.41.5 °Cn/a
Stability67 %n/a
Graphics Test33 fpsn/a
Graphics Score5538n/a

Memory

RAM
RAM Size 8 GB 4 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency 2750 MHz 1794 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB
64 GB
Storage TypeUFS 3.1UFS 2.1
Memory CardNoMicroSD

Software

OS Android 11 (Upgradeable to Android 14) Android 7.0 (Upgradeable to Android 9.0)
OS Size 27.2 GB 11.7 GB
UI Skin One UI 6 One UI

Battery

Volume 4800 mAh 3000 mAh
Max Charging Power 25 W 15 W
Battery Type Li-ion Li-ion
Removable No No
Wireless Charging Yes (15 W) Yes Qi/PMA
Reverse Charging Yes (Wireless) No
Fast Charging Yes (54% in 30 min) Yes Samsung Adaptive Fast Charge (40% in 30 min)
Full Charge Time 1:12 h 1:45 h
Battery Life Test
Battery Life
Samsung Galaxy S21 Plus
20:53
Samsung Galaxy S8
16:58
Web Browsing07:28 h06:26 h
Video Playback13:15 h10:09 h
Games05:04 h04:05 h
Standby Mode105 h85 h

Main camera

Matrix 12 MP 12 MP
Photo resolution 4000x3000 pixels 4000x3000 pixels
Zoom Optical, 1.1x Digital
Flash Dual LED Dual LED
Stabilization Optical Optical
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 240 fps (720p)
Wide-angle lens 120 ° n/a
Lenses count Standard: 12 MP
Telephoto: 64 MP
Ultra-wide: 12 MP
Standard: 12 MP
Features - Bokeh effect
- Pro mode
- RAW support
Pro mode
Main lens
Matrix12 MP12 MP
Aperturef/1.8f/1.7
Focal length26 mm26 mm
SensorSony IMX555Sony IMX333
Sensor size1/1.761/2.55
Pixel size1.8 μm1.4 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalOptical
Telephoto
Matrix64 MPn/a
Aperturef/2.0n/a
Focal length28 mmn/a
SensorSamsung Bright S5KGW2n/a
Sensor size1/1.72n/a
Pixel size0.8 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
SensorSony IMX563n/a
Sensor size1/2.55n/a
Pixel size1.4 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Samsung Galaxy S21 Plus
129
Samsung Galaxy S8
88
Video quality
Samsung Galaxy S21 Plus
137
Samsung Galaxy S8
88
Overall camera score
Samsung Galaxy S21 Plus
133
Samsung Galaxy S8
88
Bokeh70n/a
Preview72n/a
Zoom126n/a

Front camera

Matrix 10 MP 8 MP
Photo resolution 3872x2592 pixels 3264x2448 pixels
Aperture f/2.2 f/1.7
Focal length 26 mm 25 mm
Sensor Sony IMX374 Samsung S5K3H7
Sensor size 1/3.24 1/3.6
Pixel size 1.22 μm 1.22 μm
Autofocus Phase autofocus (Dual Pixel) Phase autofocus
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1440p at 30 fps
TOF 3D sensor No No
Selfie camera DxOMark results
Photo quality
Samsung Galaxy S21 Plus
n/a
Samsung Galaxy S8
86
Video quality
Samsung Galaxy S21 Plus
n/a
Samsung Galaxy S8
107

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) 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
Bluetooth version 5 5
Bluetooth features LE, A2DP PBAP/PAB, PAN, OPP, MAP, LE, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 3.2 3.1
USB features - Charging
- USB Storage Mode
- USB-Host mode
- OTG
- Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo
- GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port No No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoYes
2G BandsGSM 850, 900, 1800, 1900 MHzGSM 850, GSM 900, GSM 1800, GSM 1900
3G BandsWCDMA Band 1, 2, 4, 5, 8HSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66)LTE (B700/B800/B850/B900/B1700/B1800/B1900/B2100/B2300/B2500/B2600)
LTE category2416
5G SupportYesNo

Sound

Speakers Stereo Mono
3.5 mm Jack No Yes
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy S21 Plus
87.8 dB
Samsung Galaxy S8
82.4 dB

Other

Class Flagship Flagship
Announced January, 2021 yr March, 2017 yr
Release Date February, 2021 yr April, 2017 yr
Launch Price ($) 1000 720
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S21 Plus the clear winner in this comparison.

Survey

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Total Votes: 1

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