Xiaomi Redmi K40 Gaming vs Black Shark 4

Here we compared two flagship smartphones: the 6.67-inch Xiaomi Redmi K40 Gaming (with MediaTek Dimensity 1200 5G) that was released on April 27, 2021, against the Xiaomi Black Shark 4, which is powered by Qualcomm Snapdragon 870 5G and came out 1 month before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Xiaomi Redmi K40 Gaming
  • Water-resistant body (IP53 classification)
  • Comes with 565 mAh larger battery capacity: 5065 vs 4500 mAh
  • Has a built-in infrared port
Reasons to consider the Xiaomi Black Shark 4
  • Higher display refresh rate – 144 Hz
  • Newer Bluetooth version (v5.2)
  • Uses a faster type of memory: LPDDR5 2750 MHz
  • 9% faster in single-core GeekBench 5 test: 1026 and 945 points
  • Includes a 3.5 mm headphone audio jack port

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

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests

Display

Type OLED Super AMOLED
Size 6.67 inches 6.67 inches
Resolution 1080 x 2400 pixels 1080 x 2400 pixels
Aspect ratio 20:9 20:9
PPI 395 ppi 395 ppi
Refresh rate 120 Hz 144 Hz
Max rated brightness 500 nits 500 nits
Max rated brightness in HDR 1300 nits 1300 nits
HDR support Yes, HDR10+ Yes, HDR10+
Screen protection Corning Gorilla Glass 5 Tempered glass
Screen-to-body ratio 86.3% 85.8%
Display features - DCI-P3
- Always-On Display
- DC Dimming
- DCI-P3
- Always-On Display
- DC Dimming
Display tests
RGB color space - 100%
PWM - 162 Hz
Response time - 8.5 ms
Contrast - ∞ Infinity
Peak brightness test (auto)
Sources: NotebookCheck [3]

Design and build

Height 161.9 mm (6.37 inches) 163.8 mm (6.45 inches)
Width 76.9 mm (3.03 inches) 76.4 mm (3.01 inches)
Thickness 8.3 mm (0.33 inches) 9.9 mm (0.39 inches)
Weight 205 gramm (7.23 oz) 210 gramm (7.41 oz)
Waterproof IP53 No
Rear material Glass Glass
Frame material Metal Metal
Colors Black, Silver, Yellow Black, Silver, Blue
Fingerprint scanner Yes, in home button Yes, in home button
Screen-to-body ratio

Performance

Tests of Xiaomi Redmi K40 Gaming and Xiaomi Black Shark 4 in the benchmarks
SoC
Chipset MediaTek Dimensity 1200 5G Qualcomm Snapdragon 870 5G
Max. clock 3000 MHz 3200 MHz
CPU cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4 cores at 2 GHz: Cortex-A55
- 3 cores at 2.6 GHz: Cortex-A78
- 1 core at 3 GHz: Cortex-A78
- 4 cores at 1.8 GHz: Kryo 585 Silver (Cortex-A55)
- 3 cores at 2.42 GHz: Kryo 585 Gold (Cortex-A77)
- 1 core at 3.2 GHz: Kryo 585 Prime (Cortex-A77)
L3 cache - 4 MB
Lithography process 6 nanometers 7 nanometers
Graphics Mali-G77 MC9 Adreno 650
GPU clock 886 MHz 675 MHz
FLOPS - ~1372 GFLOPS
Memory
RAM size 6, 8, 12 GB 6, 8, 12 GB
Memory type LPDDR4X LPDDR5
Memory clock 2133 MHz 2750 MHz
Channels 2 4
Storage
Storage size 128, 256 GB 128, 256 GB
Storage type UFS 3.1 UFS 3.1
Memory card No No

Benchmarks

Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
AnTuTu Benchmark 9
700471
CPU 185327 179528
GPU 240443 244949
Memory 122305 126312
UX 148455 152598
Total score 694303 700471
3DMark Wild Life Performance
Stability 98% 99%
Graphics test 25 FPS 25 FPS
Graphics score 4195 4295
PCMark 3.0 score 11724 14916
AnTuTu Benchmark 9 Android Ranking (143rd and 140th place)
Sources: 3DMark [3], [4]

Software

Operating system Android 11 Android 11
ROM MIUI 12 Joy UI 12.5
OS size - 18 GB

Battery

Specifications
Capacity 5065 mAh 4500 mAh
Charge power 67 W 120 W
Battery type Li-Po Li-Ion
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (100% in 42 min) Yes (100% in 19 min)
Full charging time 0:42 hr 0:19 hr
Battery life tests
Web browsing - 09:17 hr
Watching video - 12:41 hr
Gaming - 04:14 hr
Standby - 80 hr
General battery life

Camera

Specs and camera test of smartphones
Main camera
Matrix 64 megapixels 48 megapixels
Image resolution 9248 x 6936 8000 x 6000
Zoom Digital Digital
Flash Dual LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS Up to 60FPS
1080p video recording Up to 60FPS Up to 60FPS
Slow motion 960 FPS (720p) 960 FPS (1080p)
Angle of widest lens 120° 120°
Lenses 3 (64 MP + 8 MP + 2 MP) 3 (48 MP + 8 MP + 5 MP)
Wide (main) lens - 64 MP
- Aperture: f/1.7
- Focal length: 26 mm
- Pixel size: 0.7 micron
- Sensor: 1/2.0", Omnivision OV64B
- Phase autofocus
- 48 MP
- Aperture: f/1.8
- Pixel size: 0.8 micron
- Sensor: 1/2.0" (CMOS)
- Phase autofocus
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
- 8 MP
- Aperture: f/2.2
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
Macro lens - 2 MP
- Aperture: f/2.4
- 5 MP
- Focal length: 50 mm
- Pixel size: 1.12 micron
- Sensor: 1/5.0" (CMOS)
- Phase autofocus
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
- Pro mode
Selfie camera
Megapixels 16 megapixels 20 megapixels
Image resolution 4920 x 3264 -
Aperture f/2.5 f/2.0
Focal length - 26 mm
Pixel size - 0.8 microns
Sensor type CMOS CMOS
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) at 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 6E (802.11 a/b/g/n/ac/ax) Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
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 5.1 5.2
Bluetooth features LE, HID, A2DP LE, HID, 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, NAVIC GPS, GLONASS, Beidou, Galileo, NAVIC
NFC* Yes Yes
Infrared port Yes No
Network
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* 18 20
5G support Yes Yes

Sound

Speakers Stereo Stereo
Headphone audio jack No Yes
FM radio No No
Dolby Atmos Yes Yes
Speakers test
Max. loudness

Other

Category Flagship Flagship
Announced April 2021 March 2021
Release date April 2021 March 2021
Sensors - Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Barometer
- 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 battery life and design are more important to you, then choose the Xiaomi Redmi K40 Gaming. But if the connectivity and sound are more of a priority – go for the Xiaomi Black Shark 4.

Cast your vote

So, which phone would you choose?
93 (53.4%)
81 (46.6%)
Total votes: 174

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