Xiaomi 15 Ultra vs Xiaomi Poco X8 Pro Max Specs Comparison

Availability

Officially announced
Feb 27, 2025	Mar 17, 2026
Prices (MSRP)
12GB/256GB - €1599	12GB/256GB - $469

Design

Dimensions
6.35 x 2.96 x 0.37 inches (~0.42 inches with camera bump) 161.3 x 75.3 x 9.4 mm (~10.7 mm with camera bump)	6.41 x 3.07 x 0.32 inches (~0.41 inches with camera bump) 162.9 x 77.9 x 8.2 mm (~10.30 mm with camera bump)
Weight
	7.69 oz / 218.0 g
Materials
	Back: Glass Frame: Aluminum
Resistance
Water, Dust; IP68	Water, Dust; IP68
Biometrics
Ultrasonic in-screen fingerprint	Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, White, Silver Chrome, Green

Display

Size
6.7-inch, 90.18% screen-to-body	6.8-inch, 90.22% screen-to-body
Type
AMOLED, 120Hz, HDR, 3000 nits	AMOLED, 120Hz, 3500 nits
Resolution
3200x1440px, 20:9 ratio, 521 PPI	2772x1280px, 447 PPI
Protection
Xiaomi Shield Glass 2.0
Features
HDR support, Dolby Vision, Scratch-resistant glass, Ambient light sensor, Proximity sensor

PhoneArena Display Test

Bright Max (20% APL)
3287 (Excellent)	3362 (Excellent)
Bright Min
1.8 (Good)	1.9 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 8 Elite SM8750-AB (4 nm)	MediaTek Dimensity 9500 (3 nm)
Processor
Octa-core 2x4.32GHz Oryon V2 PhoenixL 6x3.53GH​z Oryon V2 PhoenixM	Octa-core 1x4.21GHz C1-Ultra 3x3.5GHz C1-Premium 4x2.7 GHz C1-Pro
GPU
Adreno 830	Mali G1-Ultra
Memory
12GB (LPDDR5X)/256GB (UFS 4.1) 16GB/512GB 16GB/1024GB	12GB/256GB 12GB/512GB
Storage expansion
not expandable
OS
Android (15)	Android (16)

PhoneArena Performance Test

GeekBench 6 Single
2962	2636
GeekBench 6 Multi
8965	8334
3D Mark High
5826	4194
3D Mark Low
4771	3416

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
6000 mAh, Si - Carbon	8500 mAh, Si - Carbon
Charging
Fast charging Qi wireless charging, Reverse wireless charging
Charge speed
Wired: 90.0W Wireless: 80.0W	Wired: 100.0W

PhoneArena Battery Tests

Battery Life Estimate

7h 33min

Browsing

16h 39min

Video

10h 11min

Gaming

13h 29min

Battery Life Estimate

10h 21min

Browsing

26h 6min

Video

15h 26min

Gaming

9h 55min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera	Dual camera
Main camera
50 MP (Autofocus, Laser and PDAF) Aperture size: F1.6 Focal length: 23 mm Sensor size: 1" Pixel size: 1.6 μm	50 MP (OIS, PDAF) Aperture size: F1.5
Second camera
50 MP (Ultra-wide, PDAF) Aperture size: F2.2 Focal Length: 14 mm Sensor size: 1/2.76" Pixel size: 0.64 μm	8 MP (Ultra-wide) Aperture size: F2.2
Third camera
50 MP (Telephoto) Optical zoom: 3.2x Aperture size: F1.8 Focal Length: 75 mm Sensor size: 1/2.51" Pixel size: 0.7 μm
Fourth camera
200 MP (Telephoto, Periscope, OIS, PDAF) Optical zoom: 4.3x Aperture size: F2.6 Focal Length: 100 mm Sensor size: 1/1.4" Pixel size: 0.56 μm
Fifth camera
ToF 3D depth sensing
Flash
Dual LED	LED
Video recording
8K UHD (30 fps), 4K UHD (120 fps), 1080p (1920 fps)	Yes
Front
32 MP Video capture: 4K UHD (60 fps)	20 MP

PhoneArena Camera Tests

158

Overall

165

Photo

150

Video

N/A

Overall

N/A

Photo

N/A

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
6.0	Yes
WLAN
Wi-Fi 6,Wi-Fi 6E,Wi-Fi 7,tri-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	Wi-Fi 6,Wi-Fi 7 Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.2	Type-C
Sensors
Accelerometer, Gyroscope, Compass, Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, NavIC, Cell ID, Wi-Fi positioning, Emergency SOS via satellite (SMS sending/receiving)	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, Infrared	NFC

Multimedia

Headphones
No 3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Multiple speakers
Screen mirroring
	Wireless screen share
Additional microphone(s)
	Noise cancellation

Cellular

5G Bands
n1, n2, n3, n5, n7, n8, n12, n20, n25, n26, n28, n34, n38, n39, n40, n41, n48, n66, n71, n75, n77, n78, n79, SA, NSA, Sub-6	5G Ready
LTE Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66, 71
TDD Bands
38, 39, 40, 41, 42, 48
3G Bands
1, 2, 4, 5, 6, 8
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
Dual Nano SIM + eSIM	Nano SIM

Alternative variants

With 16GB RAM and 512GB internal storage

Memory	16GB/512GB

With 16GB RAM and 1TB internal storage

Memory	16GB/1024GB

Discover more

Full Specs Xiaomi 15 Ultra Specs PA Review Xiaomi 15 Ultra Review

Full Specs Xiaomi Poco X8 Pro Max Specs PA Review Xiaomi Poco X8 Pro Max Review