Asus ROG Phone 8vsSamsung Galaxy S21 Ultra
We compare these two popular phones to help you decide which one fits your needs and budget better.
Asus ROG Phone 8
#48
Winner
+14
Processor:Qualcomm Snapdragon 8 Gen3
RAM:12 GBGB
Storage:256 GBGB
Quick Stats
The Asus ROG Phone 8's 5500 mAh battery with 65W fast charging ensures all-day gaming and rapid power replenishment.
The ROG Phone 8's 165 Hz AMOLED display with 720 Hz touch sampling ensures ultra-smooth, immersive gaming and vibrant visuals.
Triple rear cameras with gimbal stabilization, 8K video, and AI-enhanced night mode ensure sharp, professional results.
Cutting-edge processor, 16GB RAM, and advanced cooling ensure blazing-fast, sustained performance for gaming and heavy workloads.
Samsung Galaxy S21 Ultra
#53
+19
Processor:Samsung Exynos 2100
RAM:12 GBGB
Storage:128 GBGB
Quick Stats
The S21 Ultra's 5000mAh battery with 25W fast charging and adaptive display ensures all-day endurance.
The S21 Ultra's 120Hz adaptive display with HDR10+ and 1500 nits brightness delivers immersive, vibrant visuals.
The S21 Ultra’s 108MP main lens, 3x/10x optical zoom, and 8K video deliver pro-level photo and video capabilities.
The S21 Ultra's Exynos 2100 processor and 12GB RAM ensure smooth multitasking and lag-free performance for demanding apps and gaming.
Specifications Comparison
Specification
Asus Asus ROG Phone 8
Samsung Samsung Galaxy S21 Ultra
Model
Qualcomm Snapdragon 8 Gen3
Samsung Exynos 2100
CPU
1x3.3GHz Cortex, X4 + 3x3.2 GHz Cortex, A720 + 2x3.0 GHz Cortex, A720 + 2x2.3 GHz Cortex, A520
1x Cortex, X1 2,91 GHz + 3x Cortex, A78 2,81 GHz + 4x Cortex, A55 2,21 GHz.
Type
Octa-Core
Octa-Core
Nanometer
4 nm
5 nm
Frequency
3,3 GHz
2,9 GHz
64 Bits
Yes
Yes
GPU
Adreno 750
ARM Mali-G78 MP14
RAM
12 GB
12 GB
Type
RAM LPDDR5X
RAM LPDDR5
Capacity
256 GB
128 GB
Type
UFS Storage 4.0
UFS Storage 3.1
SD slot
No
No
Fingerprint security
Yes, in screen
Yes, in screen
Fingerprint sensor
Yes
Yes
Proximity sensor
Yes
Yes
Light sensor
Yes
Yes
Accelerometer sensor
Yes
Yes
Compass sensor
Yes
Yes
Gyroscope sensor
Yes
Yes
Barometer sensor
N/A
Yes
Gravity sensor
Yes
N/A
Hall sensor
N/A
Yes
Geomagnetic sensor
N/A
Yes
Audio
DTS / DTS X, Stereo Speakers, 3 microphones
Dolby Atmos, Hi-Res Audio, Noise cancellation microphone, Stereo Speakers
Antutu Score
2020000
749000
Antutu Version
Antutu v10
Antutu v10
Antutu Standing
Overall performance better than 95% of devices
Overall performance better than 80% of devices
Cooling system
Yes
No
Gaming buttons
Yes
No
Extras
N/A
N/A
Note: Highlighted specifications show differences between the two devices.
Rankings
Connectivity
Asus ROG Phone 8
#43
Winner
Samsung Galaxy S21 Ultra
#221
Design
Asus ROG Phone 8
#133
Samsung Galaxy S21 Ultra
#100
Winner
Display
Asus ROG Phone 8
#273
Samsung Galaxy S21 Ultra
#4
Winner
Performance
Asus ROG Phone 8
#94
Winner
Samsung Galaxy S21 Ultra
#422
Battery
Asus ROG Phone 8
#170
Winner
Samsung Galaxy S21 Ultra
#622
Camera
Asus ROG Phone 8
#207
Samsung Galaxy S21 Ultra
#9
Winner
| Metric | Asus ROG Phone 8 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Connectivity | #43 Winner | #221 |
| Design | #133 | #100 Winner |
| Display | #273 | #4 Winner |
| Performance | #94 Winner | #422 |
| Battery | #170 Winner | #622 |
| Camera | #207 | #9 Winner |
Note: Lower rank number indicates a better position in category.
Key Differences
No significant specification differences found between these devices.
Scores by Category
Pros and Cons
Asus ROG Phone 8
Strengths
Premium build with IP68 rating, Gorilla Glass Victus 2, and durable aluminum alloy frame.
65W fast charging and 5500 mAh battery ensure long-lasting power for gaming and multitasking.
165 Hz adaptive refresh rate display with 720 Hz touch sampling for ultra-responsive visuals.
Triple rear cameras with optical zoom, gimbal stabilization, and 8K video recording capabilities.
Cutting-edge processor and up to 16GB RAM deliver top-tier performance for demanding tasks.
Advanced cooling system prevents overheating during extended gaming sessions.
Weaknesses
No expandable storage option, with 256GB being the only capacity available.
Lacks wireless charging support compared to some high-end competitors.
No 1TB storage variant in standard models, limiting long-term data needs.
Cooling system lacks RGB customization, which may disappoint gaming enthusiasts.
165 Hz display may drain battery faster during intensive use.
Front camera's 3x optical zoom may not match competitors in low-light performance.
Samsung Galaxy S21 Ultra
Strengths
Exceptional 120Hz adaptive display with HDR10+ and 1500 nits brightness for vibrant visuals.
Advanced quad-camera system with 108MP main lens, 3x/10x optical zoom, and 8K video recording.
Premium build with IP68 water resistance, Gorilla Glass Victus, and a sleek frameless design.
Powerful Exynos 2100 processor and Mali-G78 GPU for smooth multitasking and gaming.
Weaknesses
No expandable storage via SD card slot.
No bundled charger (25W fast charging requires purchase separately).
High price for a flagship device with non-removable battery.
Non-removable battery limits upgrade or replacement options.
Lacks periscope-style ultra-zoom compared to later flagships.
Read Full Reviews
Asus ROG Phone 8
Power your next-level gaming experience with the Asus ROG Phone 8. Featuring an adaptive high-refresh display, powerful performance, ultra-fast charging, and durable design. Unleash immersive gameplay and stunning visuals.
Samsung Galaxy S21 Ultra
Experience the pinnacle of innovation with the Samsung Galaxy S21 Ultra. Its sleek, premium design merges a vibrant adaptive display with a powerful camera system, delivering breathtaking visuals and pro-level photography in a durable, edge-to-edge masterpiece.
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