Oppo Find X (128GB) vs Samsung Galaxy M51 (SM-M515F/DSN)

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Side by side comparison between Oppo Find X vs Samsung Galaxy M51 phones, differences, pros, cons and full specifications. What's the better?

9/20/2020 9:58 PM, updated: 6/9/2025 11:20 PM

Compare Samsung Galaxy M51 X Oppo Find X (128GB) 12Points

Specifications Compare Models Pictures

6.42"
AMOLED

1080x2340

16
MP

25mp

8GB
RAM

Octa-core

3730
mAh

(Non removable)

13Points Samsung Galaxy M51 (SM-M515F/DSN) Compare Oppo Find X X

Specifications Compare Models Pictures

6.7"
AMOLED

1080x2340

64
MP

32mp

6GB
RAM

Octa-core

7000
mAh

(Non removable)

What's the better phone? Samsung Galaxy M51 (SM-M515F/DSN)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

12 Advantages Oppo Find X (128GB)	vs	13 Advantages Samsung Galaxy M51 (SM-M515F/DSN)
+2.8GHz 64bit Octa-core (10nm)2% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core (8nm)
+8GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.	vs	6GB LPDDR4X
+UFS 2.1Advantage Fastest write and read storage.	vs	eMMC 5.1
+186 grams (6.51 ounces)15% Lighter	vs	213 grams (7.46 ounces)
+9.4 millimeters (0.37 inches)1% Thinner	vs	9.5 millimeters (0.37 inches)
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+401 PPI4% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	385 PPI
+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light	vs	LED flash
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness	vs	Not supported
+(4G LTE-A) 1024 Mbps156% Faster for surfing the internet and download files	vs	(4G LTE-A) 400 Mbps
+Face unlock 3DAdvantage Sensors help you use the device	vs	Face unlock 2D
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
AMOLED	vs	+Super AMOLED PlusAdvantage Super AMOLED Plus display is brighter and more vivid
6.42"	vs	+6.7"4% Larger screen
(dual camera) 16MP + 20MP	vs	+(quad camera) 64MP + 12MP + 5MP + 5MP139% Higher resolution main camera
1/2.6" inches	vs	+1/1.73" inches50% The larger sensor camera lets you take photos with better depth.
f/2.0 (aperture)	vs	+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 25MP	vs	+(front) 32MP28% Higher resolution secondary camera to take pictures and selfies
Android 10	vs	+Android 11Advantage Android 11 is newer and safer
Not supported	vs	+Fingerprint sensor (side-mounted)Advantage Sensors help you use the device
3730 mAh	vs	+7000 mAh88% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
20W	vs	+25W25% More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
Type-C reversible connector	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general

30 Common items in both devices

128GB (110GB available) / 128GB (106GB available)

60Hz

16 million

1080x2340 pixels

Only digital zoom

PDAF: phase detection autofocus

HDR photo on both cameras

+23 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Change model		Choose the model
Model	Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Other model names	BBK Oppo Find X PAFM00, PAFT00	Samsung Galaxy M51 SM-M515F/DSN (6GB RAM)
Country or region available	(Global, International), China, Hong Kong	(Europe), (Global, International)
Brand	Oppo	Samsung
Release date	7/1/2018	9/11/2020
Depth	9.4 millimeters (0.37 inches)	9.5 millimeters (0.37 inches)
Size (width x height)	74.2 x 156.7 millimeters (2.92 x 6.17 in)	76.3 x 163.9 millimeters (3 x 6.45 in)
Weight	186 grams (6.51 ounces)	213 grams (7.46 ounces)
Build, materials	Aluminum frame, glass front/back Back: Gorilla Glass 5	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Display type	AMOLED	Super AMOLED Plus
Screen size	6.42" inches	6.7" inches
Screen-to-body ratio	~87% (screen-to-body ratio)	~88.1% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	401 PPI	385 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass 3
Refresh rate	60Hz	60Hz
Display features	Not supported	Not supported
🤖 Operating System
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
System version	Android 8.1 Oreo	Android 10
Firmware update	Android 10	Android 11
User Interface	ColorOS 5.1 / 7.0	feature not registered
⚙️ Processor
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Chipset	64bit: Qualcomm Snapdragon 845 (SDM845) (10nm)	64bit: Qualcomm Snapdragon 730G (SM7150-AB) (8nm)
CPU	Octa-core, 2 processors: 4x 2.8GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core)	Octa-core, 2 processors: 2x 2.2GHz Kryo 470 Gold (Dual-core) 6x 1.8GHz Kryo 470 Silver (Hexa-core)
GPU graphical controller	Qualcomm Adreno 630 (710MHz)	Qualcomm Adreno 618 (700MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
RAM memory	8GB LPDDR4X	6GB LPDDR4X
Internal storage	128GB (110GB available) UFS 2.1	128GB (106GB available) eMMC 5.1
External storage	Not supported	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	1024/150 Mbps	400/50 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	CDMA 800, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat16 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 32, 66) TD-LTE (34, 38, 39, 40, 41)	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Back camera (main camera)	(dual camera) 16 megapixels 20MP f/2.01/2.8"1.0µm	(quad camera) 64 megapixels 12MP ultrawide f/2.2123° 5MP macro f/2.4 5MP depth f/2.4
Main camera resolution	4608x3456 pixels	10120x6328 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 fps
Flash	Dual-LED flash	LED flash
Focal aperture	f/2.0 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	1/2.6" inches	1/1.73" inches
Pixel size	1.22µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Front camera (secondary)	25 megapixels *Motorized pop-up camera (slider)	32 megapixels
Front camera resolution	5760x4320 pixels	6528x4896 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	feature not registered	1/2.8" inches
Pixel size	feature not registered	0.8µm pixel
🔉 Sound and multimedia
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Loudspeaker	Mono sound (not stereo)	Supported
Active noise cancellation	2 microphones	2 microphones or more
Radio	Not supported	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, DivX, XviD	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C reversible connector
Audio output	Type-C reversible connector	3.5mm jack
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 3D Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3730 mAh	7000 mAh
Charger, watts	20W Wired fast charging VOOC 3.0	25W Wired fast charging Reverse charging by cable
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	feature not registered	64 hours (2.7 days)
Standby	feature not registered	feature not registered
➕ Other features
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Bordeaux Red, Glacier Blue	• Colors: Celestial Black, Electric Blue • One UI 2.1, 3.1
☢️ Radiation rate
	Oppo Find X (128GB)	Galaxy M51 (SM-M515F/DSN)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.609W/kg (head), 1.446W/kg (body)