Realme X
#1830
Samsung Galaxy A51
#1660Category Breakdown
Realme X
Samsung Galaxy A51
Performance
76.676.8
Camera
65.764.7
Display
80.282.8
Battery
27.128.1
Build
73.088.1
Connectivity
63.662.7
Audio
8.98.9
Overall
54.456.2
Summary
- The Realme X features a glass front with Gorilla Glass 5 and a plastic back, while the Samsung Galaxy A51 has a glass front with Gorilla Glass 3 and a plastic back, making the Realme slightly more durable.
- In terms of display, the Realme X has a 6.53-inch AMOLED screen with a resolution of 1080 x 2340 pixels, while the Galaxy A51 offers a 6.5-inch Super AMOLED display with a slightly higher resolution of 1080 x 2400 pixels, resulting in a higher pixel density.
- Performance-wise, the Realme X is powered by the Snapdragon 710 chipset, while the Galaxy A51 uses the Exynos 9611, with both offering similar RAM configurations.
- Camera capabilities are comparable, with both devices featuring a 48 MP main sensor; however, the A51 includes additional lenses for ultrawide, macro, and depth photography.
- The Galaxy A51 has a larger 4000 mAh battery compared to the 3765 mAh of the Realme X, but the Realme supports faster charging at 20W versus 15W for the A51.
- Lastly, the Realme X runs on Android 9 with Realme UI, while the Galaxy A51 comes with Android 10 and One UI 5, providing a more updated software experience.
Side-by-side Specification Comparison
Realme X
Samsung Galaxy A51
General
Release Date
2019
2019, December 12
Announced
2019
2019, December 12
Description
Versions: RMX1901
Also available with 5GVersions: SM-A515F/DSN (Global); SM-A515F/DS (LATAM); SM-A515F/DST (Brazil); SM-A515F/DSM (Russia); SM-A515F/N (Australia); SM-A515U (USA)
Display
Size
6.53"
6.5"
Type
AMOLED
Super AMOLED
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~394 ppi density)
1080 x 2400 pixels, 20:9 ratio (~405 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
Corning Gorilla Glass 5
Corning Gorilla Glass 3
Performance
Chipset
Qualcomm SDM710 Snapdragon 710 (10 nm)
Exynos 9611 (10 nm)
CPU
Octa-core (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU
Adreno 616
Mali-G72 MP3
Memory
64GB 4GB RAM, 64GB 6GB RAM, 128GB 4GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM
Expandable Storage
✗
✗
Card Slot
No
microSDXC (dedicated slot)
Camera
Main Camera
48 MP, f/1.7, (wide), 26mm (wide), 1/2.0", 0.8µm, PDAF5 MP, f/2.4, (depth)
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF12 MP, f/2.2, 123˚ (ultrawide)5 MP, f/2.4, (macro)5 MP, f/2.2, (depth)
Main Camera Features
LED flash, HDR
LED flash, panorama, HDR
Front Camera
Motorized pop-up 16 MP, f/2.0, 25mm (wide), 1/3.06", 1.0µm
32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm
Front Camera Features
HDR
HDR
Video Recording
4K@30fps, 1080p@30fps (gyro-EIS), 1080p@120fps, 720p@960fps
4K@30fps, 1080p@30/120fps; gyro-EIS
Selfie Video
1080p@30fps
4K@30fps, 1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
3765 mAh
4000 mAh
Battery Details
3765 mAh, non-removable
Li-Po 4000 mAh, non-removable
Charging Details
20W wired, 55% in 30 min
15W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
161.2 x 76 x 9.4 mm (6.35 x 2.99 x 0.37 in)
158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in)
Weight
191 g
172 g
Materials
Glass front (Gorilla Glass 5), plastic back, plastic frame
Glass front (Gorilla Glass 3), plastic back, plastic frame
Colors
Steam white, Punk Blue
Prism Crush Black, Prism Crush White, Prism Crush Blue, Prism Crush Pink
Foldable
✗
✗
SAR
N/A
0.80 W/kg (head) 0.67 W/kg (body)
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIMNano-SIM + Nano-SIM
Network
GSM / CDMA / HSPA / LTE
GSM / HSPA / LTE
Network Speed
HSPA 42.2/11.5 Mbps, LTE (2CA) Cat6 300/75 Mbps
HSPA, LTE
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
5.0, A2DP, LE, aptX HD
5.0, A2DP, LE
NFC
✗
✓
USB
USB Type-C
USB Type-C 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, BDS
GPS, GLONASS, GALILEO, BDS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 9.0 (Pie), upgradable to Android 10, Realme UI
Android 10, upgradable to Android 13, One UI 5
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Fingerprint (under display, optical), accelerometer, gyro, compass