Xiaomi Redmi K50 Ultra vs vivo X51 5G

Xiaomi Redmi K50 Ultra

vivo X51 5G

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

GSM 850, 900, 1800, 1900; CDMA 800
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1, 3, 4, 5, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 66
5G network

5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA

5G band 1, 3, 7, 8, 28, 38, 41, 77, 78 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Display
Display type

OLED

AMOLED
Physical size

6.67 inches

6.56 inches
Resolution

1220 x 2712 pixels

1080 x 2376 pixels
Pixel density

446 ppi

398 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass Victus

Scratch resistant
Display features

144Hz, HDR10+, Dolby Vision

90Hz, HDR10+
DxOMark display score

-

87

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 3.19 GHz Cortex-X2

Single-core 2.4 GHz Kryo 475 Prime
CPU(second)

Triple-core 2.75 GHz Cortex-A710

Single-core 2.2 GHz Kryo 475 Gold
CPU(third)

Quad-core 1.8 GHz Cortex-510

Hexa-core 1.8 GHz Kryo 475 Silver
Chipset

Qualcomm SM8475 Snapdragon 8+ Gen 1

Qualcomm SM7250 Snapdragon 765G
GPU

Adreno 730

Adreno 620
Internal storage

128, 256, 512 GB

256 GB
Memory RAM

8, 12 GB

8 GB
Memory card

No

No
Storage

UFS 3.1

UFS 2.1

Main camera
Camera type

Triple

Quad
Main camera

(wide) , 108 MP, f/1.6 , 1/1.67" , 0.64 µm

(wide) , 48 MP, f/1.6 , 1/1.2" , 0.8 µm
(ultrawide) , 8 MP, f/2.2 , 120˚

(periscope telephoto) , 8 MP, f/3.4 , 135 mm, 1/4.0" , 5x optical zoom
(macro) , 2 MP, f/2.4

(portrait) , 13 MP, f/2.5 , 50 mm, 1/2.8" , 0.8 µm, 2x optical zoom
(ultrawide) , 8 MP, f/2.2 , 120˚ , 16 mm, 1/4.0" , 1.12 µm
Primary camera resolution

12000 x 9000 pixels

8000 x 6000 pixels
Primary camera video

4K@30/60fps, 1080p@30/60/120/240/960fps

4K@30fps, 1080p@30fps, gyro-EIS
Primary camera flash

LED flash

dual-LED dual-tone flash
Camera features

Autofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, flicker sensor

Autofocus, continuous shooting, digital zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus
DxOMark photo

-

117
DxOMark zoom

-

67
DxOMark video

-

102
DxOMark camera score

-

114

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
Infrared

Yes

-
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

-
NavIC

Yes

-

Features
Sensors

Accelerometer, color spectrum, compass, fingerprint, gyroscope, proximity

Accelerometer, color spectrum, compass, fingerprint, gyroscope, proximity

Battery
Battery type

Li-Po

Li-Po
Battery capacity

5000 mAh

4315 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

Quick Charge 3+, 120W (100% in 19 min)

Vivo FlashCharge (57% in 30 min)
DxOMark autonomy

-

45
DxOMark charging

-

80
DxOMark efficiency

-

68
DxOMark battery score

-

60

Xiaomi Redmi K50 Ultra comparisons