Samsung Galaxy A51 vs Oppo Realme 6
Here we compared two mid-range smartphones: the 6.5-inch Samsung Galaxy A51 (with Exynos 9 Octa 9611) that was released on December 12, 2019, against the Oppo Realme 6, which is powered by MediaTek Helio G90T and came out 3 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.
Key differences
Reasons to consider the Samsung Galaxy A51
- Delivers 48% higher peak brightness (637 against 431 nits)
- More recent OS version: Android 13 versus 11
- Slow-motion recording at 960FPS
- Super AMOLED display (versus competitor's IPS LCD)
- More energy-efficient CPU – Exynos 9 Octa 9611
- Supports Dolby Atmos sound technology
- Weighs 19 grams less
- The front-facing camera can record video at 4K
Reasons to consider the Oppo Realme 6
- Higher display refresh rate – 90 Hz
- Shows 30% longer battery life (34:26 vs 26:33 hours)
- 55% better performance in AnTuTu Benchmark (337K versus 217K)
- Comes with 300 mAh larger battery capacity: 4300 vs 4000 mAh
- Faster storage type - UFS 2.1 versus UFS 2.0
- 57% faster in single-core GeekBench 5 test: 552 and 352 points
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Review
Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation
Value for money
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Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | Super AMOLED | IPS LCD |
| Size | 6.5 inches | 6.5 inches |
| Resolution | 1080 x 2400 pixels | 1080 x 2400 pixels |
| Aspect ratio | 20:9 | 20:9 |
| PPI | 405 ppi | 405 ppi |
| Refresh rate | 60 Hz | 90 Hz |
| Max rated brightness | 400 nits | 480 nits |
| HDR support | No | No |
| Screen protection | Corning Gorilla Glass 3 | Corning Gorilla Glass 3 |
| Screen-to-body ratio | 87.4% | 84.1% |
| Display features | - Always-On Display | - |
| RGB color space | 98.8% | 98.7% |
| PWM | 242 Hz | Not detected |
| Response time | 25 ms | 25.4 ms |
| Contrast | ∞ Infinity | 991:1 |
Peak brightness test (auto)
Design and build
| Height | 158.5 mm (6.24 inches) | 162.1 mm (6.38 inches) |
| Width | 73.6 mm (2.9 inches) | 74.8 mm (2.94 inches) |
| Thickness | 7.9 mm (0.31 inches) | 8.9 mm (0.35 inches) |
| Weight | 172 g (6.07 oz) | 191 g (6.74 oz) |
| Waterproof | No | No |
| Rear material | Plastic | Plastic |
| Frame material | Plastic | Plastic |
| Colors | White, Black | White, Blue |
| Fingerprint scanner | Yes, in-display | Yes, in home button |
Screen-to-body ratio
Performance
| Chipset | Samsung Exynos 9 Octa 9611 | MediaTek Helio G90T |
| Max. clock | 2300 MHz | 2050 MHz |
| CPU cores | 8 (4 + 4) | 8 (2 + 6) |
| Architecture | - 4 cores at 1.7 GHz: Cortex-A53 - 4 cores at 2.3 GHz: Cortex-A73 |
- 6 cores at 2 GHz: Cortex-A55 - 2 cores at 2.05 GHz: Cortex-A76 |
| Lithography process | 10 nanometers | 12 nanometers |
| Graphics | Mali-G72 MP3 | Mali-G76 MC4 |
| GPU clock | 850 MHz | 800 MHz |
| FLOPS | ~259 GFLOPS | ~184 GFLOPS |
Benchmarks
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
AnTuTu Benchmark 9
| CPU | 49711 | 100458 |
| GPU | 53719 | 87086 |
| Memory | 43824 | 57397 |
| UX | 70475 | 90326 |
| Total score | 217818 | 337076 |
3DMark Wild Life Performance
| Stability | 95% | 98% |
| Graphics test | 4 FPS | 7 FPS |
| Graphics score | 812 | 1302 |
Memory
| RAM size | 4, 6 GB | 4, 8 GB |
| Memory type | LPDDR4X | LPDDR4X |
| Memory clock | 1866 MHz | 1866 MHz |
| Channels | 2 | 2 |
| Storage size | 64, 128 GB | 128 GB |
| Storage type | UFS 2.0 | UFS 2.1 |
| Memory card | MicroSD | MicroSD |
| Memory card max. size | Up to 512 GB | Up to 256 GB |
Software
| Operating system | Android 10 (Can be upgraded to Android 13) | Android 10.0 (Can be upgraded to Android 11.0) |
| ROM | One UI 5.0 | Realme UI 2 |
| OS size | 23 GB | 13 GB |
Battery
| Capacity | 4000 mAh | 4300 mAh |
| Charge power | 15 W | 30 W |
| Battery type | Li-Po | Li-Ion |
| Replaceable | No | No |
| Wireless charging | No | No |
| Reverse charging | No | No |
| Fast charging | Yes (40% in 35 min) | Yes (100% in 55 min) |
| Full charging time | 1:50 hr | 0:55 hr |
| Web browsing | 09:34 hr | 13:07 hr |
| Watching video | 11:29 hr | 11:20 hr |
| Gaming | 05:12 hr | 05:29 hr |
| Standby | 83 hr | 126 hr |
General battery life
Camera
| Matrix | 48 megapixels | 64 megapixels |
| Image resolution | 8000 x 6000 | 9248 x 6920 |
| Zoom | Digital | Digital |
| Flash | LED | LED |
| Stabilization | Digital | Digital |
| 8K video recording | No | No |
| 4K video recording | Up to 30FPS | Up to 30FPS |
| 1080p video recording | Up to 30FPS | Up to 60FPS |
| Slow motion | 960 FPS (720p) | 240 FPS (720p) |
| Angle of widest lens | 120° | 119° |
| Lenses | 4 (48 MP + 12 MP + 5 MP + 5 MP) | 4 (64 MP + 8 MP + 2 MP + 2 MP) |
| Wide (main) lens | - 48 MP - Aperture: f/2.0 - Focal length: 26 mm - Pixel size: 0.8 micron - Sensor: 1/2", Sony IMX582 (Exmor-RS CMOS) - Phase autofocus |
- 64 MP - Aperture: f/1.8 - Focal length: 26 mm - Pixel size: 0.8 micron - Sensor: 1/1.72", Samsung Bright S5KGW1 (ISOCELL Plus CMOS) - Phase autofocus |
| Ultra-wide lens | - 12 MP - Aperture: f/2.2 - Focal length: 13 mm - Pixel size: 1.12 micron |
- 8 MP - Aperture: f/2.3 - Focal length: 13 mm - Pixel size: 1.12 micron - Sensor: 1/4.0" (CMOS) |
| Monochrome lens | - | - 2 MP - Aperture: f/2.4 - Focal length: 22 mm - Pixel size: 1.75 micron - Sensor: 1/5" (CMOS) |
| Macro lens | - 5 MP - Aperture: f/2.4 - Focal length: 40 mm - Pixel size: 1.12 micron |
- 2 MP - Aperture: f/2.4 - Focal length: 22 mm - Pixel size: 1.75 micron - Sensor: 1/5.0" (CMOS) |
| Depth lens | - 5 MP - Aperture: f/2.2 - Pixel size: 1.12 micron - Sensor: 1/5.0" (CMOS) |
- |
| Camera features | - Bokeh mode - Pro mode |
- Bokeh mode - Pro mode |
| Megapixels | 32 megapixels | 16 megapixels |
| Image resolution | 6560 x 4928 | 4920 x 3264 |
| Aperture | f/2.2 | f/2.0 |
| Focal length | 26 mm | 26 mm |
| Pixel size | 0.8 microns | 1 microns |
| Sensor type | ISOCELL CMOS | CMOS |
| Sensor size | 1/2.8" | 1/3.1" |
| Video resolution | 2160p (4K) at 30 FPS | 1080p (Full HD) at 30 FPS |
Connectivity
| Wi-Fi standard | Wi-Fi 5 (802.11 b/g/n/ac) | Wi-Fi 5 (802.11 b/g/n/ac) |
| Wi-Fi features | - Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5 | 5 |
| Bluetooth features | PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP | LE, A2DP |
| USB type | USB Type-C | USB Type-C |
| USB version | 2 | 2 |
| USB features | - Charging - USB-Storage mode - OTG |
- Charging - USB-Storage mode - OTG |
| GPS | GPS, GLONASS, Beidou, Galileo | GPS, GLONASS, Beidou, Galileo |
| NFC* | Yes | Yes |
| Infrared port | No | No |
| Number of SIM* | 2 | 2 |
| Type of SIM card | Nano | Nano |
| Multi SIM mode | Standby | Standby |
| eSIM support* | No | No |
| Hybrid slot | No | No |
| LTE Cat* | 12 | 6 |
| 5G support | No | - |
Sound
| Speakers | Mono | Mono |
| Headphone audio jack | Yes | Yes |
| FM radio | Yes | Yes |
| Dolby Atmos | Yes | No |
Speakers test
Max. loudness
Other
| Category | Mid-range | Mid-range |
| Announced | December 2019 | March 2020 |
| Release date | December 2019 | March 2020 |
| SAR (head) | 0.596 W/kg | 0.71 W/kg |
| SAR (body) | 1.45 W/kg | 0.57 W/kg |
| Sensors | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Conclusion
If the software, camera, design, and sound are more important to you, then choose the Samsung Galaxy A51. But if the performance and battery life are more of a priority – go for the Oppo Realme 6.
Cast your vote
Total votes: 281