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vivo X300 Ultra vs Xiaomi Xiaomi 17 Ultra

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

vivoX300 UltraXiaomiXiaomi 17 Ultra
Overview
ReleasedApril 2026March 2026
Display
Screen size6.82″6.9″
Resolution3168 × 14402608 × 1200
Sharpness510 pixels per inch416 pixels per inch
PanelLTPO OLEDLTPO OLED
Refresh rate144 Hz120 Hz
Peak brightness4,500 nits3,500 nits
Display typeAMOLED, LTPO identified by Digital Camera World; adaptive 1–144 Hz, with 144 Hz limited to supported games as noted by Stuff6.9-inch Xiaomi HyperRGB OLED display, 2608 × 1200
Pixel density510 ppi–
Brightness detail4,500 nits local peak3,500 nits multi-scenario peak brightness
Screen protection–Xiaomi Shield Glass 3.0
Display featuresQ10 plus light-emitting material; 1.07 billion colours, P3 gamut and 105% NTSC; circular polariser 2.0; TÜV Rheinland flicker-free and low blue light certification1–120 Hz refresh; touch sampling up to 300 Hz; DCI-P3; 12-bit colour depth; eye-care DC dimming; HDR10+ and Dolby Vision; wet touch; TÜV Rheinland Low Blue Light (hardware), Flicker Free and Circadian Friendly certified
Performance
ChipQualcomm Snapdragon 8 Elite Gen 5Snapdragon 8 Elite Gen 5
Memory16 GB16 GB
Storage512 GB, 1 TB512 GB, 1 TB
CPUEight cores, 2 × 4.6 GHz + 6 × 3.62 GHz; 3 nm process2 prime cores up to 4.6 GHz and 6 performance cores up to 3.62 GHz; 3 nm
GPU–Adreno GPU
Storage typeGlobal 16 GB/512 GB and 16 GB/1 TB, LPDDR5X Ultra Pro RAM and UFS 4.1; up to 16 GB virtual RAM is separate from physical RAM; no storage expansionUFS 4.1; LPDDR5X RAM
Cooling5,800 mm² vapour chamberXiaomi 3D Dual-Channel IceLoop system
Cameras
Main camera200 MP50 MP
Ultra wide camera50 MP50 MP
Telephoto camera200 MP200 MP
Optical zoom3.7×4.3×
Front camera50 MP50 MP
Main camera200 MP Sony LYTIA 901, 1/1.12-inch sensor, f/1.85, 35 mm equivalent, ZEISS T* coating and CIPA 6.5 OIS50 MP Light Fusion 1050L, 1″ sensor, 3.2 µm 4-in-1 pixels, ƒ/1.67, 23 mm equivalent, OIS; Leica Summilux lens
Ultra wide camera50 MP Sony LYTIA 818, 1/1.28-inch sensor, f/2.0, 14 mm equivalent, ZEISS T* coating and CIPA 6.0 OIS50 MP Samsung JN5, 1/2.75″ sensor, ƒ/2.2, 14 mm equivalent, 115° field of view
Telephoto camera200 MP HP0, 1/1.4-inch sensor, f/2.67, 85 mm equivalent, ZEISS T* coating, CIPA 7.0 and 3° OIS; autofocus tracking up to 60 fps200 MP Samsung HPE, 1/1.4″ sensor, 2.24 µm 16-in-1 pixels, ƒ/2.39–ƒ/2.96, 75–100 mm equivalent continuous optical zoom, OIS
Front camera50 MP, f/2.45; autofocus identified by Digital Camera World50 MP OV50M, 1/2.87″ sensor, ƒ/2.2, 21 mm equivalent, 90° field of view, autofocus
Zoom3.7× telephoto identified by Stuff; maker lists 35 mm main, 14 mm ultra wide and 85 mm telephoto focal lengths; separately purchased extenders provide 200 mm and 400 mm equivalent reachContinuous optical zoom from 75 to 100 mm (about 3.2× to 4.3× the 23 mm main camera); digital zoom up to 120×
Video recordingAcross all three rear imaging cameras, 4K120 10-bit Log, Dolby Vision and slow motion; 4K Master Color; 4:2:2 APV codec, ACES integration and 3D LUT monitoring8K at 30 fps; 4K Dolby Vision at 30, 60 or 120 fps; Log up to 4K 120 fps with ACES; slow motion up to 1080p 1,920 fps; ShootSteady up to 2.8K 60 fps; night video up to 4K 24 fps
Front video–4K Dolby Vision at 30 or 60 fps; 1080p Dolby Vision at 30 or 60 fps; slow motion up to 1080p 120 fps
Camera featuresAdditional 5 MP f/2.0 colour-sensing camera; VS1+ imaging chip; Pro Photo, Pro Video, underwater, spatial, stage, food, street photography and creative modesLeica Authentic and Vibrant looks; Xiaomi ProFocus; Lightning Burst; 200 MP telephoto mode; Super Macro; Live Cinematography; four-microphone array; laser focus and flicker sensors
Battery and charging
Battery6,600 mAh6,000 mAh
Wired chargingUp to 100 WUp to 90 W
Wireless chargingUp to 40 WUp to 50 W
Battery life detailSingle-cell battery, 6,600 mAh/24.69 Wh typical and 6,395 mAh/23.92 Wh rated at 3.74 V–
Wired chargingUp to 100 W FlashCharge with maker charger; charging power varies during use90 W HyperCharge; QC3+, PD3.0 and 90 W PPS (charger not included)
Wireless chargingUp to 40 W with included charger/cable and separately purchased vivo or iQOO 50 W Vertical Wireless Charger 2; incompatible with their original 50 W Vertical Wireless Charger50 W wireless HyperCharge (charger sold separately)
Design
TypeStandardStandard
Weight237 g218.4 g
Thickness8.49 mm8.29 mm
Height × width162.98 × 76.81 mm162.9 × 77.6 mm
Water and dust resistanceIP68IP68
Stylus–No
MaterialsGreen and White glass rear, 237 g and 8.49 mm thick; Black glass fibre rear, 232 g and 8.19 mm thick; height and width unchanged–
ColoursGreen, Black and White; overview names Steppe Green, Volcano Black and Alpine WhiteBlack, White, Starlit Green (Starlit Green weighs 219 g)
Water resistance detailIP68 and IP69 under IEC 60529; resistance can diminish with useIP68, tested in fresh water up to 6 m deep for up to 30 minutes; not advised for beach or pool use
Biometrics3D ultrasonic fingerprint sensorUltrasonic in-screen fingerprint sensor; AI face unlock
SensorsAccelerometer, ambient light, compass, proximity, colour temperature, gyroscope, laser focusing, Hall, infrared blaster and flicker sensors; linear vibration motorProximity, ambient light, accelerometer, gyroscope, electronic compass, IR blaster, flicker, laser focus, barometer, Hall; X-axis linear vibration motor
SpeakersDual stereo speakersStereo speakers; Dolby Atmos; Hi-Res and Hi-Res Audio Wireless
MicrophonesQuad-microphone recording with six presets; Bluetooth TWS earbud and wireless microphone recording support–
Software
Operating systemAndroidAndroid
Software at launchAndroid 16 with OriginOS 6Xiaomi HyperOS 3
AI features–Xiaomi HyperAI (AI Writing, AI Speech Recognition, AI Interpreter, AI Search); Circle to Search with Google; Google Gemini
In the boxPhone, USB cable, charger, SIM eject tool, case, applied protective film and warranty card, as listed on global sheetPhone, USB-C cable, SIM eject tool, protective case, safety information, quick start guide and warranty card (no charger)
Connectivity
Satellite messaging–No
Mobile networkGSM 850/900/1800/1900 MHz; WCDMA B1/2/4/5/6/8/19; LTE FDD B1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28/32 RX/66/71; 5G n1/2/3/5/7/8/12/20/25/28/38/40/41/66/71/75/77/78/79; maker's duplicated LTE TDD band list is omitted pending correction5G SA and NSA; 4G LTE; 4×4 MIMO
SIMTwo nano-SIMs, nano-SIM plus eSIM or two eSIMs; dual 5G standby; eSIM availability depends on region and carrierNano-SIM + nano-SIM, nano-SIM + eSIM, or dual eSIM
Wi-FiWi-Fi 6 and 7; Wi-Fi Display, 2 × 2 MIMO and MU-MIMO; concurrent 2.4/5 GHz or 2.4/6 GHzWi-Fi 7 with Multi-Link Operation, 2×2 MIMO
BluetoothBluetooth 6.0Bluetooth 6.0, Dual-Bluetooth; SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC, LHDC 5.0, LC3 and MIHC
NFCReader/writer and card emulation including HCE and NFC-SIM payment; NFC-SIM payment requires SIM1Yes
USBUSB 3.2 up to 10 Gbps; OTG–
PositioningGPS, BeiDou, GLONASS, Galileo, QZSS, NavIC, A-GPS, cellular and Wi-Fi positioningGPS (L1+L5), Galileo (E1+E5a), GLONASS (G1), Beidou, QZSS (L1+L5), NavIC (L5)

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