Xiaomi Redmi K100 Pro Max vs Vivo X51 5G
Product
Price
660 USD
659 USD
Status
Available
Available
Brand
Xiaomi Mobiles
Vivo Mobiles
Model No
Xiaomi Redmi K100 Pro Max
vivo X51 5G
Launch Date
2026, August 11
2020, October 23
Technology
GSM / HSPA / LTE / 5G
GSM / CDMA / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA 800
3G bands
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 43, 48, 66
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 66
5G bands
1, 3, 5, 7, 8, 18, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA
1, 3, 7, 8, 28, 38, 41, 77, 78 SA/NSA
Speed
HSPA, LTE, 5G
HSPA 42.2/5.76 Mbps, LTE-A, 5G
Dimensions
163.5 x 78 x 8.5 mm (6.44 x 3.07 x 0.33 in)
158.5 x 72.8 x 8 mm (6.24 x 2.87 x 0.31 in)
Weight
238 g (8.40 oz)
181.5 g (6.42 oz)
Build
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
Glass front, glass back, aluminum frame
SIM
Nano-SIM + Nano-SIM
Dual SIM (Nano-SIM, dual stand-by)
Colors
Black, White, Blue, Red (Burgundy)
Gray
Type
AMOLED, 68B colors, 185Hz, Dolby Vision, HDR Vivid, HDR10+, BT.2020, 4500 nits (peak)
AMOLED, 90Hz, HDR10+
Size
6.9 inches, 116.6 cm2 (~91.5% screen-to-body ratio)
6.56 inches, 104.6 cm2 (~90.6% screen-to-body ratio)
Resolution
1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)
1080 x 2376 pixels (~398 ppi density)
OS
Android 16, HyperOS 3
Android 10, Funtouch 10.0
Chipset
Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)
Qualcomm SDM765 Snapdragon 765G (7 nm)
CPU
Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)
GPU
Adreno 840
Adreno 620
RAM
12GB/16GB
8GB, UFS 2.1
Storage
256GB/512GB
UFS 4.1
256GB UFS 2.1
Card Slot
No
Lens 1
200 MP, f/1.7, 24mm (wide), 0.5µm, PDAF, OIS
48 MP, f/1.6, (wide), PDAF, Laser AF, gimbal OIS
Lens 2
50 MP, f/3.0, 115mm (periscope telephoto), 1/2.75", 0.64µm, PDAF, OIS, 5x optical zoom
8 MP, f/3.4, 135mm (periscope telephoto), 1/4.0", PDAF, OIS, 5x optical zoom
Lens 3
50 MP, f/2.4, 18mm, 102˚ (ultrawide), 1/2.88", 0.61µm
13 MP, f/2.5, 50mm (portrait), 1/2.8", 0.8µm, PDAF, 2x optical zoom
Features
Color spectrum sensor, LED flash, HDR, panorama
Dual-LED dual-tone flash, HDR, panorama
Video
8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960/1920fps, gyro-EIS, HDR10+
4K@30fps, 1080p@30fps, gyro-EIS
Lens 4
8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm
Lens 1
32 MP, f/2.2, 21mm (wide), 1/3.44", 0.64µm
32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm
Video
4K@30fps, 1080p@30/60fps
1080p@30fps
Features
HDR
Capacity
Si/C Li-Ion 9070 mAh
Li-Po 4315 mAh, non-removable
Charging
100W wired, PD3.0, QC3+, 100W PPS
50W wireless
27W reverse wired
22.5W reverse wireless
Fast charging 33W, 57% in 30 min (advertised)
Sensors
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, color spectrum
Loudspeaker
Yes, with stereo speakers (with Dolby Atmos)
Yes
3.5mm jack
No
32-bit/192kHz audio
WLAN
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth
6.0, A2DP, LE, LHDC 5.0, ASHA, MIHC, Auracast
5.1, A2DP, LE, aptX HD
GPS
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC, GLONASS
Yes, with A-GPS, GLONASS, GALILEO, BDS
NFC
Yes
Yes
USB
USB Type-C, OTG
USB Type-C 2.0, USB On-The-Go
Radio
No