How to choose the right network cable – Cat5e, Cat6 and Cat7 explained
Choosing the right network cable matters more than ever. Whether it's for a camera system, a business network, a server room or a home installation, the quality and specifications of the cable determine the speed, stability and reliability of your connection. In this guide we explain the difference between Cat5e, Cat6, Cat6A and Cat7, and which cable is the best fit for which situation.
Why does your choice of network cable matter so much?
Modern networks carry ever higher data rates and larger volumes of traffic – think of 4K IP cameras, VoIP, cloud systems and demanding business applications. The network cable has to handle this load without any loss of speed or quality.
The wrong cable can lead to:
- unstable connections
- lower speeds than your network equipment can handle
- limitations when you upgrade in the future
- problems with IP cameras, especially at high resolutions or with PoE
Choosing the right cable is therefore essential for a reliable, future-proof system.
The differences between Cat5e, Cat6, Cat6A and Cat7
Below is an overview of the key properties of each category.
Cat5e – the minimum standard
Speed: up to 1 Gbps
Frequency: 100 MHz
Maximum length: 100 m
For years, Cat5e was the standard for home and office networks. It works fine for simple data applications, but the cable is starting to show its age.
Suitable for:
- simple networks
- IP cameras up to 1080p without a high bitrate
- internet connections up to 1 Gbps
Less suitable for:
- 4K cameras
- more demanding business networks
- future upgrades to 2.5/5/10 Gbps
Cat6 – the modern all-rounder
Speed: 1 Gbps up to 100 m, 10 Gbps up to approx. 55 m
Frequency: 250 MHz
Cat6 is the current standard for most installations. It's faster, more stable and better protected against interference than Cat5e.
Advantages:
- supports 10 Gbps over shorter distances
- ideal for PoE and PoE+ cameras
- better protection against crosstalk
Suitable for:
- homes and offices
- 4K IP cameras
- networks that will need to get faster in the future
For most UMATECH installations we recommend Cat6 as a minimum.
Cat6A – future-proof and powerful
Speed: 10 Gbps up to 100 m
Frequency: 500 MHz
Today, Cat6A is the best choice for professional installations. It supports 10 Gbps over the full cable length and offers excellent shielding.
Advantages:
- stable 10 Gbps network
- ideal for 4K and 8K cameras
- well suited to PoE++ equipment
- higher bandwidth and less interference
Suitable for:
- businesses
- large camera networks
- server rooms and backbone networks
- high-end homes with future-ready infrastructure
Cat6A is the recommended cable for professional video surveillance and business networks.
Cat7 – technically advanced, but not always necessary
Speed: 10 Gbps (theoretically up to 40 Gbps in specific applications)
Frequency: 600–1000 MHz
Cat7 offers heavy shielding and high frequencies. Even so, it is used less often in standard IT environments, because its connectors aren't always fully compatible with RJ45 and because Cat6A already delivers more than enough performance.
Advantages:
- very strong shielding
- suitable for special data centre applications
Disadvantages:
- more expensive
- less flexible
- often unnecessary for standard networks
Suitable for:
- highly specific industrial or data centre environments
For standard camera and business networks, Cat7 is rarely the best choice.
Which cable should you choose for your application?
Here's some clear advice:
For IP cameras (home or small business)
- Up to 4 cameras: Cat6
- For 4K cameras or PoE+/PoE++ systems: Cat6A
For business networks
- Offices and shops: Cat6 or Cat6A
- Warehouses, large sites and central NVR set-ups: Cat6A
For server rooms, backbones and future-proof infrastructure
- Cat6A is recommended as the standard
- Cat7 only if the project has specific requirements
Comparison at a glance
| Category | Speed | Frequency | Max. distance at 10 Gbps | Typical application |
|---|---|---|---|---|
| Cat5e | 1 Gbps | 100 MHz | n/a | Basic networks |
| Cat6 | 1–10 Gbps | 250 MHz | approx. 55 m | Homes, offices |
| Cat6A | 10 Gbps | 500 MHz | 100 m | Businesses, cameras, backbone |
| Cat7 | 10–40 Gbps (specific applications) | 600+ MHz | 100 m | Data centres, special applications |
So which cable should you choose?
For 95% of all modern networks, Cat6A is the best and most future-proof choice.
Cat6 is fine for standard use, while Cat5e is effectively outdated. Cat7 is only relevant for highly specialised projects.
Want to be sure you're using the right cable for your camera system or business network?
UMATECH advises on, supplies and installs professional network cabling that meets all current standards and future requirements.
