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AsusTechnical Specification MatrixAI Enhanced AnalysisAnalysis Date: 20 September 2026Evaluated at £668.12

Asus Chromebook CX5403CMA-QM0381

The Asus Chromebook CX5403CMA QM0381 is a 14-inch work-focused laptop running ChromeOS, powered by an Intel Core Ultra 7 processor and 8GB of RAM. Encased in a 1.4 kg silver clamshell chassis, it offers 512GB of NVMe SSD storage and a high-resolution 2560 x 1600 touchscreen display.

8.7/ 10
Andote Tech Score
Evaluated at £668.12
Price-Tier Avg: 8.2/10
Rated on 20 September 2026
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Relative Benchmark Scoring (1–10)

vs Price Tier Competitors
RAM Capacity8GB
Hardware Spec Score
5.5/10(Average)
Price-to-Value Efficiency
5.4/10(Average)
Storage Capacity512GB
Hardware Spec Score
9.0/10(Exceptional)
Price-to-Value Efficiency
8.9/10(Excellent)
CPU Cores12
Hardware Spec Score
6.4/10(Above Average)
Price-to-Value Efficiency
6.3/10(Above Average)
Battery Capacity63 Wh
Hardware Spec Score
6.3/10(Above Average)
Price-to-Value Efficiency
6.3/10(Above Average)
Display Resolution2560MP
Hardware Spec Score
7.2/10(Very Good)
Price-to-Value Efficiency
7.2/10(Very Good)
Weight1400g
Hardware Spec Score
6.6/10(Above Average)
Price-to-Value Efficiency
6.5/10(Above Average)
How We Calculate This Score

Our objective rating combines Hardware Spec Quality (measuring real-world component power benchmarked across the entire category on a 1–10 scale) with a Price-to-Value Index (evaluating technical capability relative to selling price). User reviews and merchant sponsorships do not influence this score.

Score Deciding Factors8 Key drivers
✓Tier-1 Brand (Asus)
Premium manufacturer reliability & build qualityTier-1 Standing
•High-End Price Bracket£668
High-end product priced in the upper bracketPremium Tier
!Modest RAM Capacity8GB
Entry-level benchmark rating limits overall score5.5/10
✓High-End Storage Capacity512GB
Top-tier capability in this category9.0/10
!Modest CPU Cores12.0
Entry-level benchmark rating limits overall score6.4/10
!Low Battery Capacity63 Wh
Entry-level benchmark rating limits overall score6.3/10
•Standard Display Resolution2560MP
Solid standard benchmark for category7.2/10
•Standard Weight1.40kg
Solid standard benchmark for category6.6/10
Key Technical Strengths
  • ✓Sharp 2560 x 1600 resolution touchscreen with DCI-P3 color gamut
  • ✓Comprehensive connectivity including Wi-Fi 6E and dual Thunderbolt 4 ports
  • ✓Lightweight 1.4 kg clamshell chassis optimized for mobile professionals
Technical Limitations & Trade-offs
  • ✕Internal memory is capped at 8GB with no upgrade path
  • ✕Standard 60Hz refresh rate lacks the motion fluidity found on higher-end panels

Official Product Documents & PDF Manuals

2 documents available
Product Data Sheet
product_details
User Manual
user_guide

Complete Technical Specifications

Manufacturer-verified hardware specifications with contextual AI metric explanations.

What this metric means:

The 512GB NVMe SSD provides ample space for offline files and rapid boot times, keeping local data access instantaneous.

NVMeYes
SSD capacity512 GB
SSD interfacePCI Express 4.0
Storage mediaSSD
SSD form factorM.2
Optical drive typeNo
Total SSDs capacity512 GB
Card reader integratedYes
Total storage capacity512 GB
Compatible memory cardsMicroSD (TransFlash)
Number of SSDs installed1
What this metric means:

The 2560 x 1600 resolution on a 14-inch panel delivers crisp detail, while the DCI-P3 color space ensures accurate visuals for color-sensitive web tasks.

HD typeWQXGA
TouchscreenYes
Colour gamut100%
Display diagonal35.6 cm (14")
RGB colour spaceDCI-P3
Anti-glare screenYes
Display brightness500 cd/m²
Display resolution2560 x 1600 pixels
Native aspect ratio16:10
Maximum refresh rate60 Hz
What this metric means:

The 12-core Intel Core Ultra 7 processor paired with 8GB of RAM handles everyday productivity smoothly, though the fixed 8GB memory limit caps advanced local multitasking headroom.

Efficient cores8
Processor cache12 MB
Processor cores12
Processor model155U
Processor familyIntel Core Ultra 7
Performance cores2
Processor threads14
Maximum turbo power57 W
Processor base power15 W
Processor cache typeSmart Cache
Processor generationIntel® Core™ Ultra (Series 1)
Processor manufacturerIntel
Low Power Efficient-cores2
Processor boost frequency4.8 GHz
Efficient-core base frequency1.2 GHz
Performance-core base frequency1.7 GHz
Efficient-core Max Turbo Frequency3.8 GHz
Performance-core Max Turbo Frequency4.8 GHz
Low Power Efficient-core Base Frequency700 MHz
Low Power Efficient-core Max Turbo Frequency2.1 GHz
What this metric means:

The 12-core Intel Core Ultra 7 processor paired with 8GB of RAM handles everyday productivity smoothly, though the fixed 8GB memory limit caps advanced local multitasking headroom.

Internal memory8 GB
Memory form factorOn-board
Internal memory typeLPDDR5x-SDRAM
Maximum internal memory8 GB
What this metric means:

At 1.4 kg with a 63 Wh battery, the device offers a portable footprint suitable for professionals who travel frequently between workspaces.

Battery capacity63 Wh
Battery technologyLithium-Ion (Li-Ion)
Number of battery cells3