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What is the difference between various cable types like Cat 5, Cat 5e and Cat 6?

What is the difference between various cable types like Cat 5, Cat 5e and Cat 6?

I'm just about to move house, so I'm going to have to disconnect and re-wire my network. Pretty much all the devices I have support Gigabit Ethernet. Should I go out and buy some decent network cables (and if so what type) or should I continue using my mix of Cat 5 cables I've acquired over the years.

Asked by: Guest | Views: 122
Total answers/comments: 5
Guest [Entry]

"What Is The Difference Between Cat 5, Cat 5e, and Cat 6 Cable?

If you’re researching the different types of twisted-pair copper cable used to transmit data in network and home theater applications, then it’s likely that you will repeatedly come across the terms Category 5 (Cat 5), Category 5e (Cat 5e) and Category 6 (Cat 6). Organizations such as the Telecommunication Industry Association (TIA) and Electronic Industries Association (EIA) set specific product standards, and these guidelines have resulted in cables being classified into various categories based on their performance levels. Just in case you’re not too familiar with cabling terminology, we at CableOrganizer.com would like to provide you with a few straightforward definitions and statistics on these three common grades of network cable, to help you better choose the right one to fit your needs.

Cat 5: Out of the three types of cable we’ll be discussing, Category 5 is the most basic. Cat 5 cable is available in two varieties: Unshielded Twisted Pair (UTP), the type widely used in the United States, and Screened Twisted Pair (SCTP), which has shielding to provide a measure of extra protection against interference, but is rarely used outside of Europe. Cables belonging to Category 5 are either solid or stranded: Solid Cat 5 is more rigid, and the better choice if data needs to be transmitted over a long distance, while Stranded Cat 5 is very flexible and most likely to be used as patch cable. Cat 5 cable can support 10, 100, or 1000 Mbit/s Ethernet. The 1000BASE-T standard for Gigabit Ethernet over UTP was designed to work over up to 100 meters of plain old Cat 5.

Cat 5e: Cat 5e (which stands for Category 5, enhanced) cable goes along the same lines as basic Cat 5, except that it fulfills higher standards of data transmission. While Cat 5 is common in existing cabling systems, Category 5e has almost entirely replaced it in new installations. Just like Cat 5, Cat 5e can handle data transfer at 1000 Mbit/s, and is suitable for Gigabit Ethernet. Cat 5e experiences much lower levels of near-end crosstalk (NEXT) than Cat 5.

Cat 6: Of the three cable categories we’re discussing, Category 6 is the most advanced and provides the best performance. Just like Cat 5 and Cat 5e, Category 6 cable is typically made up of four twisted pairs of copper wire, but its capabilities far exceed those of other cable types because of one particular structural difference: a longitudinal separator. This separator isolates each of the four pairs of twisted wire from the others, which reduces crosstalk, allows for faster data transfer, and gives Category 6 cable twice the bandwidth of Cat 5! Cat 6 cable is ideal for supporting 10 Gigabit Ethernet. Since technology and standards are constantly evolving, Cat 6 is the wisest choice of cable when taking any possible future updates to your network into consideration. Not only is Category 6 cable future-safe, it is also backward-compatible with any previously-existing Cat 5 and Cat 5e cabling found in older installations.

Source and more information"
Guest [Entry]

"Depending on how old they are and how badly they've been abused, your existing cables may be starting to deteriorate.

Plus, if you replace them, you can do spiffy color-coding.

Cat 5e can theoretically handle 1gig-e, while Cat 6 can handle 10gig-e; Cat 6 is typically more expensive. Basically, if you buy a quality cable, Cat 5e should do it."
Guest [Entry]

"No, it's not so simple.

Cat 6 is also limited to 100 metres length maximum, less actually, and its operating efficiency and reality is dependent on other factors such as age, handling, damage, copper quality, connection efficiency (24 gauge instead of 22 can create punching problems), environmental factors and so on as well, as the bandwidth actually being used.

While the above is true, Cat 6 is limited to 100 m for Cat 6 performance. The point of other comments is correct in that, if running longer than 100 m, you might still get good Cat 5e grade performance out of a Cat 6 cable, when a Cat 5e would not be able to transmit the signal as well."
Guest [Entry]

"I wired my house 10 years ago with Cat 5. By that time, I was told that I should just use Cat 4, since Cat 5 is expensive. If I put Cat 4, I would not be able to take advantage of the current Gigabit speed.

Currently, Cat 7 is out, but think for the future."
Guest [Entry]

"For the typical home network, Cat 5e will work for years to come. Cat 6 is a slightly different animal from an operational and installation point of view and not worth the effort unless the environment is hostile (read that as full of interference producing devices).

Not too many homes, or even business locations for that matter, are hostile enough to justify Cat 6. Self-proclaimed 'experts' in places like Best Buy will tell you Cat 6 is the way to go, but most of them have no clue what they're talking about, or at least I haven't met one in my 20+ years of electrical and network cabling experience."