Screen size
C51Winner: 6.7"+0.3%
P3x6.7"
Quick verdict
P3x leads the measured specs 14-4.
Measured wins
C51
4
spec wins
Ties
3
equal specs
P3x
14
spec wins
Overall winner
Screen size
Technology
C51
GSM / HSPA / LTE
P3x
GSM / HSPA / LTE / 5G
2G bands
C51
GSM 850 / 900 / 1800 / 1900
P3x
GSM 850 / 900 / 1800 / 1900
3G bands
C51
HSDPA 850 / 900 / 2100
P3x
HSDPA 850 / 900 / 2100
4G bands
C51
1, 3, 5, 8, 38, 40, 41 - Africa, India, 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 - Asia
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
3.5mm jack
SD card
equal specsStereo speakers
P3x
1, 3, 5, 8, 28, 40, 41
Speed
C51
HSPA, LTE
P3x
HSPA, LTE, 5G
5G bands
C51
-
P3x
1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA
Announced
C51
2023, July 24
P3x
2025, February 18
Status
C51
Available. Released 2023, August
P3x
Available. Released 2025, February 28
Dimensions
C51
167.2 x 76.7 x 8 mm (6.58 x 3.02 x 0.31 in)
P3x
165.7 x 76.2 x 7.9 mm (6.52 x 3.00 x 0.31 in)
Weight
C51
186 g (6.56 oz)
P3x
197 g (6.95 oz)
Build
C51
Glass front, plastic frame, plastic back
P3x
Glass front, aluminum frame, plastic back or silicone polymer back (eco leather)
SIM
C51
Nano-SIM + Nano-SIM
P3x
Nano-SIM + Nano-SIM
Other
C51
-
P3x
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 2m for 30 min) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
Type
C51
IPS LCD, 90Hz, 560 nits (peak)
P3x
IPS LCD, 120Hz, 950 nits (peak)
Size
C51
6.74 inches, 109.7 cm2 (~85.5% screen-to-body ratio)
P3x
6.72 inches, 109.0 cm2 (~86.3% screen-to-body ratio)
Resolution
C51
720 x 1600 pixels, 20:9 ratio (~260 ppi density)
P3x
1080 x 2400 pixels, 20:9 ratio (~392 ppi density)
Protection
C51
-
P3x
ArmorShell glass
OS
C51
Android 13, Realme UI T
P3x
Android 15, Realme UI 6.0
Chipset
C51
Unisoc Tiger T612 (12 nm)
P3x
Mediatek Dimensity 6400 (6 nm)
CPU
C51
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
P3x
Octa-core (2x2.5 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
C51
Mali-G57
P3x
Mali-G57 MC2
Card slot
C51
microSDXC (dedicated slot)
P3x
microSDXC (uses shared SIM slot)
Internal
C51
64GB 3GB RAM, 64GB 4GB RAM, 128GB 4GB RAM, 256GB 6GB RAM
P3x
128GB 6GB RAM, 128GB 8GB RAM
Other
C51
еMMC 5.1
P3x
eMMC 5.1
Single
C51
50 MP, f/1.8, 27mm (wide), 1/2.76", 0.64µm, PDAF Auxiliary lens
P3x
-
Features
C51
LED flash, HDR, panorama
P3x
LED flash, HDR, panorama
Video
C51
1080p@30fps
P3x
1080p@30/60fps
Dual
C51
-
P3x
50 MP, f/1.8, 27mm (wide), 2.88", 0.61µm, PDAF Auxiliary lens
Single
C51
5 MP, f/2.2, 28mm (wide), 1/5.0", 1.12µm
P3x
8 MP, f/2.0, (wide)
Features
C51
HDR
P3x
Panorama
Video
C51
720p@30fps
P3x
1080p@30fps
Loudspeaker
C51
Yes
P3x
Yes
3.5mm jack
C51
Yes
P3x
No
Other
C51
-
P3x
24-bit/192kHz Hi-Res audio
WLAN
C51
Wi-Fi 802.11 a/b/g/n/ac, dual-band
P3x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
C51
5.0, A2DP, LE
P3x
5.3, A2DP, LE, aptX HD, BLE Audio
Positioning
C51
GPS, GLONASS, GALILEO
P3x
GPS, GALILEO, GLONASS, QZSS, BDS
NFC
C51
Yes, 360˚ (market/region dependent)
P3x
No
Radio
C51
Unspecified
P3x
No
USB
C51
USB Type-C 2.0, OTG
P3x
USB Type-C 2.0, OTG
Sensors
C51
Fingerprint (side-mounted), accelerometer, proximity, compass
P3x
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Type
C51
5000 mAh
P3x
Si/C Li-Ion 6000 mAh
Charging
C51
33W wired, 0-50% in 28 min
P3x
45W wired 5W reverse wired
Colors
C51
Mint Green, Carbon Black
P3x
Midnight Blue, Stellar Pink, Lunar Silver
Models
C51
RMX3830
P3x
RMX3944
SAR
C51
1.18 W/kg (head) 0.78 W/kg (body)
P3x
-
Price
C51
About 410 EUR
P3x
About 140 EUR