Ace 5 Ultra vs Poco X8 Pro Max

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

100% Objective Comparisons — Data sourced from official manufacturers

See our methodology

100%

Ace 5 Ultra is 2.0% taller

Ace 5 Ultra

163.1mm×75.1mm

Poco X8 Pro Max

159.9mm×73.4mm

Scaled to real proportions

Specifications Comparison

Ace 5 Ultra

OnePlus

4 wins

Poco X8 Pro Max

Xiaomi

3 wins

📱

Screen Size

Diagonal screen measurement

Better

Ace 5 Ultra

6.7"

Poco X8 Pro Max

6.67"

Difference: 0.03" (0.4% more)

🔋

Battery

Battery capacity in milliamp-hours

= Tie

Ace 5 Ultra

5,000mAh

Poco X8 Pro Max

5,000mAh

Difference: 0mAh

💾

RAM

Random Access Memory for multitasking

Better

Ace 5 Ultra

12GB

Poco X8 Pro Max

8GB

Difference: 4GB (50.0% more)

⚖️

Weight

Total device weight

Better

Ace 5 Ultra

203g

Poco X8 Pro Max

205g

Difference: 2g (1.0% less)

💿

Storage

Internal storage capacity

Better

Ace 5 Ultra

256GB

Poco X8 Pro Max

128GB

Difference: 128GB (100.0% more)

📷

Main Camera

Main camera resolution

Better

Ace 5 Ultra

50MP

Poco X8 Pro Max

108MP

Difference: 58MP (116.0% more)

💰

Price

Retail price in USD

Better

Ace 5 Ultra

999$

Poco X8 Pro Max

299$

Difference: 700$ (234.1% less)

📏

Height

Device height

Ace 5 Ultra

163.1mm

Poco X8 Pro Max

159.9mm

📐

Width

Device width

Ace 5 Ultra

75.1mm

Poco X8 Pro Max

73.4mm

📦

Thickness

Device thickness/depth

Better

Ace 5 Ultra

8.7mm

Poco X8 Pro Max

8.1mm

Difference: 0.6mm (7.4% less)

Ace 5 Ultra

Poco X8 Pro Max

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

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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 Ace 5 Ultra View Poco X8 Pro Max Screen Size Battery RAM Weight Storage

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