Executive Summary

The HP EliteBook 840 G3 is a 14-inch business laptop from HP's premium EliteBook 800 series, featuring 6th Generation Intel Skylake processors. Released during the transition from Windows 7 to Windows 10, it was designed to support both operating systems while providing enterprise-grade security, durability, and manageability.

Detailed Specifications

1. Processor (CPU)

Generation: 6th Generation Intel Core (Skylake-U)

Available Configurations:

• Intel Core i5-6200U: 2 cores, 4 threads, 2.3-2.8 GHz (Most Common)
• Intel Core i5-6300U: 2 cores, 4 threads, 2.4-3.0 GHz (vPro available)
• Intel Core i7-6500U: 2 cores, 4 threads, 2.5-3.1 GHz
• Intel Core i7-6600U: 2 cores, 4 threads, 2.6-3.4 GHz (vPro available)
• Intel Core i3-6100U: 2 cores, 4 threads, 2.3 GHz (Entry Level)

Key Features:

• Intel vPro Technology: Available on select configurations for enterprise management
• Thermal Design Power: 15W U-series processors for balance of performance and battery life
• Architecture: Skylake microarchitecture with 14nm process

2. Graphics

• Integrated: Intel HD Graphics 520
• Execution Units: 24 EUs
• Graphics Clock: Up to 1050 MHz
• Display Support: Up to 3 external displays via docking solutions
• Video Outputs: VGA, DisplayPort, optional HDMI via docking

Graphics Performance:

• Office Applications: Smooth performance for business software
• External Displays: Capable of driving up to 1080p external monitors
• Media Playback: Hardware accelerated 1080p video decoding

3. Display

• Size: 14.0-inch diagonal
• Resolution Options:
  • HD (1366 x 768) anti-glare (Standard)
  • HD (1366 x 768) touchscreen
  • FHD (1920 x 1080) anti-glare IPS
  • FHD (1920 x 1080) touchscreen IPS (Premium)
• Panel Technology: TN (HD models), IPS (FHD models)
• Brightness:
  • HD panels: 220 nits
  • FHD panels: 250-300 nits
• Color Coverage:
  • HD TN panels: 45% NTSC
  • FHD IPS panels: 72% NTSC (approximately 100% sRGB)

4. Memory & Storage

Memory (RAM):

• Type: DDR4 SDRAM (some early models may have DDR3L)
• Speed: 2133 MHz
• Configuration: 2 x SO-DIMM slots (both accessible under service panel)
• Maximum Capacity: 16GB (2x8GB)
• Standard Configurations: 4GB, 8GB, or 16GB

Storage:

• Type Options:
  • SATA III HDD (2.5-inch, 7200RPM)
  • SATA III SSD (2.5-inch or M.2 2280)
  • PCIe NVMe SSD (rare, on select high-end configurations)
• Capacity Options:
  • HDD: 500GB or 1TB
  • SSD: 128GB, 256GB, or 512GB
• Optical Drive: Optional DVD±RW or Blu-ray via modular bay

5. Design & Build Quality

• Dimensions: 339 x 237.5 x 21 mm (13.35 x 9.35 x 0.83 inches)
• Weight: Starting at 1.54 kg (3.39 lbs)
• Materials: Magnesium alloy chassis, aluminum display lid
• Color: Silver or dark gray
• Durability:
  • MIL-STD 810G tested
  • HP DuraKeys with spill-resistant design
  • Reinforced corners and hinges
• Keyboard: Full-size keyboard with numeric keypad, 1.5mm key travel, optional backlight

6. Security Features

• Security Chip: TPM 1.2 (standard), TPM 2.0 (on some later models)
• HP Client Security: Management suite for security policies
• Authentication:
  • Fingerprint reader (optional)
  • Smart Card reader (optional)
  • Kensington lock slot
• BIOS Security: Password protection, secure boot capability
• Encryption: Full disk encryption via BitLocker or third-party solutions

7. Connectivity & Ports

Left Side:

• 1 x VGA port
• 1 x USB 3.0 Type-A
• 1 x DisplayPort
• 1 x 3.5mm headphone/microphone combo jack
• AC power port

Right Side:

• 2 x USB 3.0 Type-A (one with charging capability)
• 1 x RJ-45 Gigabit Ethernet
• Optional Smart Card reader
• Optional SIM card slot (WWAN models)

Front Edge:

• SD card reader
• Wireless on/off switch

Wireless Connectivity:

• Wi-Fi: Intel Dual Band Wireless-AC 8260 (802.11ac 2x2)
• Bluetooth: 4.2
• WWAN: Optional 4G LTE (Cat 6)

8. Audio & Video Conferencing

• Webcam: 720p HD camera
• Camera Features: Fixed focus, ambient light sensor
• Microphones: Dual digital array microphones
• Speakers: Stereo speakers with DTS Studio Sound
• Audio Features:
  • HP Noise Reduction software
  • Audio by Bang & Olufsen (on some configurations)

9. Battery & Power

• Battery Options:
  • 3-cell, 48 Wh Li-ion (Standard)
  • 6-cell, 72 Wh extended battery
• Power Adapter: 65W slim tip adapter
• Battery Life (HP Testing):
  • Standard battery: Up to 9.5 hours (MobileMark 2014)
  • Extended battery: Up to 14 hours (MobileMark 2014)
• Battery Design: Removable/replaceable battery (user-accessible)

10. Software & Management

• Operating System: Windows 7 Professional 64-bit (with Windows 10 upgrade rights)
• Alternative OS: Windows 10 Pro, Windows 8.1 Pro
• Pre-installed Software:
  • HP Client Security Manager
  • HP Support Assistant
  • HP Connection Optimizer
  • HP Power Manager
• Management:
  • HP Manageability Integration Kit
  • Intel Active Management Technology (AMT) on vPro models
  • Compatible with enterprise management systems
• Warranty: 3-year limited warranty (now expired on all units)

Performance & Use Cases

Business Application Performance:

• Office Productivity: Capable for Microsoft Office 2016/2019
• Multitasking: Handles 10-15 browser tabs with office applications
• Email & Communication: Smooth performance for Outlook, Lync/Skype for Business
• Legacy Applications: Good compatibility with older business software

Enterprise Environment Suitability:

• Corporate Deployment: Designed for large-scale IT deployments
• Docking Integration: Works with HP UltraSlim and advanced docking stations
• Network Compatibility: Built-in Ethernet for wired corporate networks
• Management Integration: Full compatibility with enterprise management tools

Key Features & Target Audience

Unique Selling Points:

• Legacy Port Support: VGA, Ethernet, and full-size USB ports included
• Modular Design: Removable battery and optional optical drive bay
• Business Durability: MIL-STD tested construction for corporate use
• Windows 7 Support: Excellent compatibility for organizations delaying Windows 10 migration
• Enterprise Management: Full suite of manageability tools

Ideal For:

• Corporate office workers in traditional environments
• Organizations with legacy Windows 7 requirements
• Educational institutions needing durable, manageable laptops
• Government agencies with specific security and compatibility needs
• Businesses with existing docking station infrastructure

Limitations:

• Dual-Core Processors: Limited multi-threaded performance
• Thicker Design: Bulkier than modern ultrabooks
• Display Quality: Base HD resolution inadequate by modern standards
• Legacy Status: 8+ years old, outside standard support lifecycle
• Limited Graphics: Integrated graphics only, not for demanding applications

Modern Use Assessment (2024):

• Basic Office Use Only: Suitable for light productivity tasks
• SSD Essential: HDD models unacceptably slow for modern use
• RAM Requirements: Minimum 8GB recommended for Windows 10
• Battery Replacement: Almost certainly needed due to age
• Security Concerns: Older security features may not meet current standards

Upgrade Recommendations:

• Storage Upgrade: SSD installation essential for acceptable performance
• RAM Upgrade: Increase to 8GB or 16GB if possible
• Battery Replacement: New battery required for mobile use
• OS Considerations: Windows 10 recommended, Windows 11 not officially supported
• Thermal Maintenance: Clean fans and reapply thermal paste if overheating

Comparison with Contemporaries:

• vs. EliteBook 840 G4: G4 offers 7th Gen processors and Thunderbolt 3
• vs. Dell Latitude E7470: Comparable business laptop from same era
• vs. Lenovo ThinkPad T460: Similar target market with different keyboard design
• vs. Modern Business Laptops: Significantly outperformed by current devices

Docking & Expansion Capabilities:

• Docking Stations: Compatible with HP UltraSlim and advanced docking stations
• Port Replication: Docking provides additional USB, audio, and video outputs
• One-Cable Solution: Docking enables single-cable connection for power and peripherals

Final Verdict:

The HP EliteBook 840 G3 is a legacy business laptop that represents a transitional generation between traditional corporate laptops and modern ultrabooks. Its strengths lie in its comprehensive port selection (including legacy VGA and Ethernet), durable construction, and enterprise management capabilities.