Poco X8 Pro Max vs iQOO 15 Ultra

Side-by-side comparison with real-scale visuals and detailed specifications

100% Objective Comparisons — Data sourced from official manufacturers

See our methodology

100%

iQOO 15 Ultra is 2.8% taller

Poco X8 Pro Max

159.9mm×73.4mm

iQOO 15 Ultra

164.3mm×74.8mm

Scaled to real proportions

Specifications Comparison

Poco X8 Pro Max

Xiaomi

5 wins

iQOO 15 Ultra

vivo

3 wins

📱

Screen Size

Diagonal screen measurement

Better

Poco X8 Pro Max

6.67"

iQOO 15 Ultra

6.78"

Difference: 0.11" (1.6% more)

🔋

Battery

Battery capacity in milliamp-hours

Better

Poco X8 Pro Max

5,000mAh

iQOO 15 Ultra

4,500mAh

Difference: 500mAh (11.1% more)

💾

RAM

Random Access Memory for multitasking

Better

Poco X8 Pro Max

8GB

iQOO 15 Ultra

12GB

Difference: 4GB (50.0% more)

⚖️

Weight

Total device weight

Better

Poco X8 Pro Max

205g

iQOO 15 Ultra

210g

Difference: 5g (2.4% less)

💿

Storage

Internal storage capacity

Better

Poco X8 Pro Max

128GB

iQOO 15 Ultra

256GB

Difference: 128GB (100.0% more)

📷

Main Camera

Main camera resolution

Better

Poco X8 Pro Max

108MP

iQOO 15 Ultra

50MP

Difference: 58MP (116.0% more)

💰

Price

Retail price in USD

Better

Poco X8 Pro Max

299$

iQOO 15 Ultra

999$

Difference: 700$ (234.1% less)

📏

Height

Device height

Poco X8 Pro Max

159.9mm

iQOO 15 Ultra

164.3mm

📐

Width

Device width

Poco X8 Pro Max

73.4mm

iQOO 15 Ultra

74.8mm

📦

Thickness

Device thickness/depth

Better

Poco X8 Pro Max

8.1mm

iQOO 15 Ultra

9.2mm

Difference: 1.1mm (13.6% less)

Poco X8 Pro Max

iQOO 15 Ultra

Winner in category

Last updated: March 23, 2026

Source: Official Source

Last updated: March 23, 2026

Source: Official Source

Why Trust Our Comparisons

Verified Data

All specs verified from official sources

No Affiliate Bias

We don't earn from product sales

Regularly Updated

Data refreshed when specs change

Transparent Method

Our comparison methodology is public

SizeVS Editorial Team

Verified

Product Comparison Specialists

Our team of tech enthusiasts and data analysts work to provide accurate, unbiased product comparisons.

Verified Data Sources Editorial Standards

Updated: March 24, 2026

Our methodology

Explore this matchup

View Poco X8 Pro Max View iQOO 15 Ultra Screen Size Battery RAM Weight Storage

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