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USB-C vs Thunderbolt : Un guide clair des ports

  • Release Date:06/12/2025
USB-C vs Thunderbolt

Table des matières

Introduction: Why Understanding These Ports Matters

In today’s tech-driven world, USB-C et Thunderbolt ports are everywhere—on laptops, smartphones, monitors, and chargers. While they look identical, their capabilities vary wildly. Choosing the wrong port can lead to sluggish data transfers, inefficient charging, or even device incompatibility!
🔑 Key Insight: USB-C is a physical port shape, while Thunderbolt is a high-speed data protocol (both use the same port).

 

USB-C: The Universal Connector

What Is USB-C?
  • Physical Design: Reversible oval-shaped port (no more “wrong side up” frustration!).
  • Polyvalence: Supports data transfer, charging (up to 240W), and video output (e.g., 4K/60Hz).
  • Speed Variations: Ranges from USB 2.0 (480 Mbps) to USB4 (40 Gbps), depending on the version.

USB Cable

Thunderbolt: Speed, Power, and Pro-Level Performance

What Is Thunderbolt?
  • Developed By: Intel and Apple. Thunderbolt 3+ uses the USB-C port design.
  • Flagship Features:
    • Blazing-fast 40 Gbps data transfer (Thunderbolt 3/4).
    • Daisy-chaining up to 6 devices (e.g., monitors, external drives).
    • Support for dual 4K displays or a single 8K display.
    • External GPU compatibility for gaming/creative workflows.
  • Look for the ⚡ Logo: Thunderbolt-certified devices/cables are marked with a lightning symbol.

usb4 cable

 

USB-C vs. Thunderbolt: Head-to-Head Comparison

Tableau de comparaison
FonctionnalitéUSB-C (USB4)Thunderbolt 4
Max Speed40 Gbps40 Gbps
Power Delivery (PD)Up to 240WUp to 100W
Video Output4K @ 60Hz (Single Display)Dual 4K @ 60Hz or 8K @ 30Hz
Daisy-ChainingLimited (via USB hubs)Up to 6 Devices
External GPU SupportNonYes
CostAffordablePremium

 

Which Should You Choose?
  • For Most Users: USB-C (cost-effective for daily tasks like charging and file transfers).
  • Pros/Creators: Thunderbolt (demands speed for video editing, gaming, or multi-device setups).

 

Visual Guide: Identifying Ports and Cables

USB-C
  • No specific logo (check device specs for USB version).
  • Common in budget to mid-range devices.
Thunderbolt
  • Always labeled with ⚡ (look for it on ports, cables, or packaging).
  • Found on premium devices (e.g., MacBooks, high-end Windows laptops).

 

Common Questions Answered

Q: Are all USB-C cables Thunderbolt-compatible?
A: No! Only Thunderbolt-certified cables support 40 Gbps speeds and advanced features.
Q: Will a Thunderbolt device work with a USB-C port?
A: Yes, but at USB-C speeds (e.g., a Thunderbolt SSD connected to a USB-C port will max out at 10 Gbps).
Q: Does Thunderbolt 5 change the game?
A: Thunderbolt 5 (released in 2024) doubles speeds to 80 Gbps—ideal for 8K+ workflows. However, adoption is still limited.
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