Samsung Galaxy S20 Ultra vs Galaxy A51

71 out of 100

52 out of 100

Here we compared two smartphones: the 6.9-inch Samsung Galaxy S20 Ultra (with Exynos 990) that was released on February 11, 2020, against the Samsung Galaxy A51, which is powered by Exynos 9 Octa 9611 and came out 2 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

Differences
Review
Specs
Benchmarks
Battery life
Camera
Comments

Key differences

An overview of the main advantages of each smartphone

Reasons to consider the Samsung Galaxy S20 Ultra

Waterproof body (IP68 classification)
The rear camera has a 4x optical zoom
2.9x better performance in AnTuTu Benchmark (711K versus 246K)
Higher display refresh rate – 120 Hz
Comes with 1000 mAh larger battery capacity: 5000 vs 4000 mAh
26% higher pixel density (511 vs 405 PPI)
Delivers 41% higher peak brightness (897 against 638 nits)
Handles wireless charging up to 15W
Optical image stabilization
Supports higher wattage charging (45W versus 15W)
Has a 0.4 inch larger screen size
Uses a faster type of memory: LPDDR5 3200 MHz
Compatible with Wi-Fi 6 wireless networks

Reasons to consider the Samsung Galaxy A51

Weighs 48 grams less
Includes a 3.5 mm headphone audio jack port

Review

Evaluation of Samsung Galaxy S20 Ultra and Galaxy A51 crucial features

Display

Screen quality, color accuracy, brightness

Type	Dynamic AMOLED	Super AMOLED
Size	6.9 inches	6.5 inches
Resolution	1440 x 3200 pixels	1080 x 2400 pixels
Aspect ratio	20:9	20:9
PPI	511 ppi	405 ppi
Refresh rate	120 Hz	60 Hz
Adaptive refresh rate	No	No
Max rated brightness	800 nits	400 nits
HDR support	Yes, HDR10+	No
Screen protection	Corning Gorilla Glass 6	Corning Gorilla Glass 3
Screen-to-body ratio	89.9%	87.4%
Display features	- DCI-P3 - Always-On Display	- Always-On Display

RGB color space	99.2%	98.8%
PWM	240 Hz	242 Hz
Response time	6.2 ms	25 ms
Contrast	∞ Infinity	∞ Infinity

Height	166.9 mm (6.57 inches)	158.5 mm (6.24 inches)
Width	76 mm (2.99 inches)	73.6 mm (2.9 inches)
Thickness	8.8 mm (0.35 inches)	7.9 mm (0.31 inches)
Weight	220 g (7.76 oz)	172 g (6.07 oz)
Waterproof	IP68	No
Advanced cooling	Vapor chamber	-
Rear material	Glass	Plastic
Frame material	Metal	Plastic
Colors	Black, Gray	White, Black
Fingerprint scanner	Yes, in-display	Yes, in-display

Chipset	Samsung Exynos 990	Samsung Exynos 9 Octa 9611
Max clock	2730 MHz	2300 MHz
CPU cores	8 (2 + 2 + 4)	8 (4 + 4)
Architecture	- 4 cores at 2 GHz: Cortex-A55 - 2 cores at 2.5 GHz: Cortex-A76 - 2 cores at 2.73 GHz: Exynos M5	- 4 cores at 1.7 GHz: Cortex-A53 - 4 cores at 2.3 GHz: Cortex-A73
L3 cache	2 MB	-
Lithography process	7 nanometers	10 nanometers
Graphics	Mali-G77 MP11	Mali-G72 MP3
GPU shading units	704	54
GPU clock	800 MHz	850 MHz
FLOPS	~1126 GFLOPS	~91.8 GFLOPS

CPU	202750	69792
GPU	219003	55670
Memory	130201	60677
UX	157575	59872
Total score	711852	246594

Max surface temperature	38.6 °C	42.2 °C
Stability	53%	95%
Graphics test	25 FPS	4 FPS
Graphics score	4319	812

Web score	8802	-
Video editing	6175	-
Photo editing	31559	-
Data manipulation	8779	-
Writing score	12443	-

RAM size	12, 16 GB	4, 6 GB
Memory type	LPDDR5	LPDDR4X
Memory clock	3200 MHz	1866 MHz
Channels	2	2

Storage size	128, 512 GB	64, 128 GB
Storage type	UFS 3.0	UFS 2.0
Memory card	MicroSD	MicroSD
Memory card max size	Up to 1000 GB	Up to 512 GB

Operating system	Android 10.0 (Can be upgraded to Android 13)	Android 10 (Can be upgraded to Android 13)
ROM	One UI 4.1	One UI 5.0
OS size	23.7 GB	23 GB

Capacity	5000 mAh	4000 mAh
Max charge power	45 W	15 W
Battery type	Li-Ion	Li-Po
Replaceable	No	No
Wireless charging	Yes (15 W)	No
Reverse charging	Yes, (wireless)	No
Fast charging	Yes (100% in 80 min)	Yes (40% in 35 min)
Full charging time	1:20 hr	1:50 hr

Battery life tests
Web browsing	08:26 hr	09:34 hr
Watching video	11:53 hr	11:29 hr
Gaming	04:13 hr	05:12 hr
Standby	93 hr	83 hr

Main camera
Matrix	108 megapixels	48 megapixels
Image resolution	12032 x 9204	8000 x 6000
Zoom	Optical, 4x	Digital
Flash	LED	LED
Stabilization	Optical	Digital
8K video recording	Up to 24FPS	No
4K video recording	Up to 60FPS	Up to 30FPS
1080p video recording	Up to 60FPS	Up to 30FPS
Slow motion	960 FPS (720p)	960 FPS (720p)
Angle of widest lens	120°	120°
Lenses	4 (108 MP + 48 MP + 12 MP + 0.3 MP)	4 (48 MP + 12 MP + 5 MP + 5 MP)
Wide (main) lens	- 108 MP - Aperture: f/1.8 - Focal length: 26 mm - Pixel size: 0.8 micron - Sensor: 1/1.33", Samsung Bright S5KHM1 (ISOCELL CMOS) - Phase autofocus (Dual Pixel) - Optical stabilization	- 48 MP - Aperture: f/2.0 - Focal length: 26 mm - Pixel size: 0.8 micron - Sensor: 1/2", Sony IMX582 (Exmor-RS CMOS) - Phase autofocus
Telephoto lens	- 48 MP - Aperture: f/3.5 - Focal length: 103 mm - Pixel size: 0.8 micron - Sensor: 1/2", Sony IMX586 (CMOS) - Phase autofocus - Optical stabilization	-
Ultra-wide lens	- 12 MP - Aperture: f/2.2 - Focal length: 13 mm - Pixel size: 1.4 micron	- 12 MP - Aperture: f/2.2 - Focal length: 13 mm - Pixel size: 1.12 micron
Macro lens	-	- 5 MP - Aperture: f/2.4 - Focal length: 40 mm - Pixel size: 1.12 micron
Depth lens	- 0.3 MP - Aperture: f/1.0 - Pixel size: 5 micron	- 5 MP - Aperture: f/2.2 - Pixel size: 1.12 micron - Sensor: 1/5.0" (CMOS)
Camera features	- Bokeh mode - Pro mode - RAW support	- Bokeh mode - Pro mode

Selfie camera
Megapixels	40 megapixels	32 megapixels
Image resolution	7864 x 5200	6560 x 4928
Aperture	f/2.2	f/2.2
Focal length	26 mm	26 mm
Pixel size	0.7 microns	0.8 microns
Sensor type	CMOS	ISOCELL CMOS
Sensor size	1/2.65"	1/2.8"
Video resolution	2160p (4K) at 60 FPS	2160p (4K) at 30 FPS

Wi-Fi standard	Wi-Fi 6 (802.11 b/g/n/ac/ax)	Wi-Fi 5 (802.11 b/g/n/ac)
Wi-Fi features	- Wi-Fi Direct - Wi-Fi Display	- Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display
Bluetooth version	5	5
Bluetooth features	LE, A2DP	PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type	USB Type-C	USB Type-C
USB version	3.1	2
USB features	- Charging - USB-Storage mode - OTG	- Charging - USB-Storage mode - OTG
GPS	GPS, GLONASS, Beidou, Galileo	GPS, GLONASS, Beidou, Galileo
NFC *	Yes	Yes
Infrared port	No	No

Number of SIM *	2	2
Type of SIM card	Nano	Nano
Multi SIM mode	Standby	Standby
eSIM support *	Yes	No
Hybrid slot	Yes	No
LTE Cat *	22	12
5G support	Yes	No

Speakers	Stereo	Mono
Headphone audio jack	No	Yes
FM radio	No	Yes
Dolby Atmos	Yes	Yes

Category	Flagship	Mid-range
Announced	February 2020	December 2019
Release date	March 2020	December 2019
SAR (head)	0.32 W/kg	0.596 W/kg
SAR (body)	1.56 W/kg	1.45 W/kg
Sensors	- Hall-effect sensor - Barometer - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint	- Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint

Samsung Galaxy S20 Ultra vs Galaxy A51

Samsung Galaxy S20 Ultra vs Galaxy A51

Key differences

Review

Value for money

Tests and specifications

Display

Design and build

Performance

Benchmarks

Memory

Software

Battery

Camera

Connectivity

Sound

Other

Conclusion