Compare Redmi Note 8 2021 vs Redmi K40 Pro vs Xiaomi Redmi K30 Ultra
Connectivity
Ports
USB-C 2.0, 3.5mm headphone
USB-C
Wireless Connectivity
IR, WiFi 5, Bluetooth 5.2
WiFi 6E, Bluetooth 5.2, NFC, IR blaster
WiFi 6, NFC, IR blaster
Construction
Battery | Capacity
4000 mAh (typ)
4520 mAh
4500 mAh
Camera | Front
13 MP, f/2.0, 1/3.1", 1.12µm
20MP
20MP pop-up front camera
Camera | Rear
64MP main + 13MP 119°ultra wide-angle + 5MP telemacro + 2MP depth
Camera | Rear | Depth
2 MP, f/2.4
Camera | Rear | Macro
2 MP, f/2.4
Camera | Rear | Telephoto
5MP
Camera | Rear | Ultra-Wide
8 MP, f/2.2, 120˚, 1/4.0", 1.12µm
8MP, f/2.2
Camera | Rear | Wide
48 MP, f/1.8, 26mm, 1/2.0", 0.8µm, PDAF
64MP, Sony IMX686, f/1.89
Colors
Neptune Blue, Moonlight White, Space Black
Glossy Black, Icy White, and Dreamland
Moonlight White, Midnight Black, Mint Green
Material
Gorilla Glass 5 front and back, plastic frame
Corning Gorrila Glass 5
Speakers
Super linear speaker
Dual speakers
Dimensions
Size | Depth
8.35 mm / 0.33"
7.8 mm
9.1 mm
Size | Height
158.3 mm / 6.23"
163.7 mm
163.3 mm
Size | Width
75.3 mm / 2.96"
76.4 mm
75.4 mm
Weight
190 g / 6.7oz
196 g
213 g
Display
Aspect Ratio
19.5:9
20:9
Brightness
500 nits
900 nits (typ) / 1300 nits (max)
800 nits (HBM) / 1200 nits (typ)
Contrast Ratio
5,000,000:1 (typical)
5,000,000:1
Display Color Depth
10-bit
Display Diagonal
6.3 inch
6.67 inch
6.67"
Display Type
IPS
Samsung E4 AMOLED (OLED)
AMOLED ultimate Full Screen Display
Gamut
100% DCI-P3
100% coverage DCI-P3
Pixel Density
409 ppi
Refresh Rate
120 Hz
120 Hz
Resolution
FHD+ 2340×1080
FHD+ 2400x1080
2400×1080 FHD+ display
Function
Audio
Dolby Atmos
Bluetooth Codecs
AAC / LDAC / LHDC
Bluetooth Profiles
A2DP
Chipset
MediaTek Helio G85, 12nm manufacturing process
Qualcomm Snapdragon 888
MediaTek Dimensity 1000+ 5G processor
Fast Charging
18W fast charge
55W wired turbo charging
GPS
GPS, A-GPS, GLONASS, GALILEO, BDS
GPS: L1+L5 / Galileo: E1+E5a / GLONASS: G1 / Beidou
Graphics
Mali-G52 MP2 GPU
Qualcomm Adreno 660 GPU
HDR
HDR10+
Operating System
Android 11, MIUI 12.5
MIUI 12, Android 11
Processor
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
Qualcomm Kryo 680, 8-core
SIM
2x Nano 4G LTE
Dual nano 5G
Security
Side-mounted fingerprint sensor
Sensor
Fingerprint, accelerometer, gyro, proximity, compass
Touch Screen
360Hz touch sampling rate
Tuner
FM radio
Video Recording
FHD @ 30fps
8K 30fps / 4K 60fps / FHD 960fps
Performance
Charging Time
52min to 100%
Memory | Capacity
4 GB
6 or 8 GB
6 or 8GB
Memory | Type
LPDDR4X
LPDDR5 6400Mbps
Power Supply
33 W
Sample Rate
240 Hz
Storage
64 or 128 GB eMMC 5.1 storage + microSD
128 or 256 GB UFS 3.1
128, 256, or 512 GB
Production
Debut
2021-05-25
2021-02-25
2020-08-11
Made In
China
China
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