Samsung Galaxy S21 Ultra vs Asus ROG Phone 8 Specs Comparison

Availability

Officially announced
Jan 14, 2021	Jan 08, 2024
Prices (MSRP)
12GB/128GB - $1200 | €1399	12GB/256GB - €1100

Design

Dimensions
6.50 x 2.98 x 0.35 inches (~0.37 inches with camera bump) 165.1 x 75.6 x 8.9 mm (~9.4 mm with camera bump)	6.45 x 3.02 x 0.35 inches 163.8 x 76.8 x 8.9 mm
Weight
8.04 oz / 229.0 g	7.94 oz / 225.0 g
Materials
Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum	Back: Glass (Corning Gorilla Glass) Frame: Aluminum
Resistance
Water, Dust; IP68	Yes; IP68
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint	Optical in-screen fingerprint
Features
	Dedicated game buttons
Keys
Right: Volume control, Lock/Unlock key
Colors
Phantom black, Silver	Phantom Black, Rebel Grey

Display

Size
6.8-inch, 89.33% screen-to-body	6.8-inch, 88.31% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 1500 nits	OLED, 165Hz, HDR, 2500 nits
Resolution
3200x1440px, 20:9 ratio, 516 PPI	2400x1080px, 20:9 ratio, 388 PPI
Protection
Corning Gorilla Glass Victus	Corning Gorilla Glass Victus 2

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
1.5 (Good)	Untested

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 888 SM8350 (5 nm)	QualcommSnapdragon 8 Gen 3 SM8650-AB (4 nm)
Processor
Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680	Octa-core 1x3.3GHz Cortex-X4 5x3.2GH​z Cortex-A720 2x2.3​GHz Cortex-A520
GPU
Adreno 660	Adreno 750
Memory
12GB (LPDDR5)/128GB (UFS 3.1) 12GB/256GB 16GB/512GB	12GB (LPDDR5X)/256GB (UFS 4.0) 16GB/256GB
Storage expansion
not expandable
OS
Android (14, 13, 12, 11)	Android (14)

PhoneArena Performance Test

GeekBench 6 Single
1117	3203
GeekBench 6 Multi
3312	10184
3D Mark High
1963	5935
3D Mark Low
1179	5813

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
5000 mAh, Li - Polymer	5500 mAh
Charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging	Fast charging Qi wireless charging, Reverse wired charging
Charge speed
Wired: 25.0W Wireless: 15.0W	Wired: 65.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

6h 15min

Browsing

14h 43min

Video

8h 52min

Gaming

8h 40min

Battery Life Estimate

8h 37min

Browsing

18h 25min

Video

12h 41min

Gaming

13h 41min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera	Triple camera
Main camera
108 MP (OIS, Laser and PDAF) Aperture size: F1.8 Focal length: 24 mm Sensor size: 1/1.33" Pixel size: 0.8 μm	50 MP (OIS, PDAF) Aperture size: F1.9 Focal length: 24 mm Sensor size: 1/1.56" Pixel size: 1.0 μm
Second camera
12 MP (Ultra-wide, PDAF) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	13 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 13 mm
Third camera
10 MP (Telephoto, OIS, PDAF) Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 70 mm Sensor size: 1/3.2" Pixel size: 1.22 μm	32 MP (Telephoto, OIS) Optical zoom: 3.0x Aperture size: F2.4 Sensor size: 1/3.2" Pixel size: 0.7 μm
Fourth camera
10 MP (Telephoto, Periscope, OIS, PDAF) Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 70 mm Sensor size: 1/3.2" Pixel size: 1.22 μm
Flash
LED	LED
Video recording
8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Video light, EIS	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps)
Front
40 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)	32 MP Video capture: 1080p

Connectivity & Features

Bluetooth
5.1	5.3
WLAN
a,b,g,n,ac,Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	b,g,n,ac,Wi-Fi 6,Wi-Fi 6E,Wi-Fi 7 Wi-Fi Direct, Hotspot 802.11 b, g, n, ac, ax
USB
Type-C, USB 3.2	Type-C
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, NavIC, Cell ID, Wi-Fi positioning
Other
NFC, ANT+	NFC

Multimedia

Headphones
No 3.5mm jack	3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Multiple speakers
Features
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Cellular

5G Bands
n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave	n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n29, n38, n40, n41, n48, n66, n71, n77, n78, n79, SA, NSA, Sub-6
4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71	1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 66, 71
4G (TDD) Bands
38, 39, 40, 41, 46, 48	34, 38, 39, 41, 42, 48
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 6, 8
Data Speed
LTE-A Pro Cat 20 (2000/150 Mbit/s)	LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
Nano SIM	Dual Nano SIM

Regulatory Approval

FCC approval
Date approved: Dec 22, 2020 FCC ID value: A3LSMG998U
Measured SAR
Head: 0.77 W/kg Body: 1.02 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.16 W/kg Phablet: 3.15 W/kg

Alternative variants

with 256GB storage

Memory	256GB
Colors	Phantom black
Prices (MSRP)	$1250

With 16GB RAM

Memory	16GB

with 512GB storage

Memory	16GB/512GB
Colors	Phantom black
Prices (MSRP)	$1380

for Europe

System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 1x2.91GHz Cortex-X1 3x2.81G​Hz Cortex-A78 4x2.2G​Hz Cortex-A55
GPU	Mali G78 MP14
Weight	8.01 oz / 227.0 g
5G Bands	SA, NSA, Sub-6
FCC approval	Date approved: Dec 22, 2020 FCC ID value: A3LSMG998B
Measured SAR	Head: 0.16 W/kg Body: 0.72 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.34 W/kg Phablet: 3.86 W/kg

Discover more

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