Side-by-Side Comparison
Ethernet Cables
Cat 5 vs. Cat 8.1
Comparing 2 standards across 12 specifications. 12 key differences identified.
Comparing:
Cat 5
Cat 8.1
Category 5 (Cat 5) is a legacy twisted-pair copper cable standard defined in ANSI/TIA/EIA-568-A. Rated for frequencies up to 100 MHz, it was the foundational medium for 100BASE-TX Fast Ethernet (100 Mbps) over distances up to 100 meters, utilizing two of its four twisted pairs.
Category 8.1 (Cat 8.1) is an Ethernet cabling standard defined in ANSI/TIA-568-C.2-1 (Category 8) and ISO/IEC 11801 Class I. Operating at 2000 MHz (2 GHz), it supports 25GBASE-T and 40GBASE-T data rates over a 30-meter channel using backward-compatible 8P8C (RJ45) shielded connectors.
Specification Comparison Table
12 Parameters| Parameter / Spec | ||
|---|---|---|
|
Frequency Bandwidth
|
100 MHz | 2000 MHz |
|
Max Bandwidth / Data Rate
|
100 Mbps | 40 Gbps |
|
Max Channel Length
|
100 m | 30 m |
|
Standard Connector
|
8P8C (RJ45) | 8P8C (RJ45 shielded) |
|
Channel Classification
|
ISO/IEC 11801 Class D | ISO/IEC Class I / ANSI/TIA Category 8 |
|
Wire Pairs
|
4 pairs | — |
|
Active Pairs (100BASE-TX)
|
2 pairs | — |
|
Typical Shielding
|
U/UTP (Unshielded) | — |
|
Supported Physical Layers
|
— | 25GBASE-T / 40GBASE-T |
|
Permanent Link Max Length
|
— | 24 m |
|
Shielding Requirement
|
— | Shielded (F/UTP, S/FTP, or F/FTP) |
|
Backward Compatibility
|
— | Cat 6a, Cat 6, Cat 5e RJ45 ports |