Cat6 Ethernet Cable: Specs, Features, Pros & Cons
Category 6 carries ten gigabit Ethernet, and it carries it only fifty-five meters, against the hundred that every other Ethernet speed is granted. That limit comes from the ten gigabit Ethernet standard itself, IEEE 802.3an, and not from any one cable maker. Retail listings that print "10 Gigabit" on the box routinely leave the distance out, so it is the first figure to look for.
Its tested bandwidth is a real step up from the grade beneath it, and gigabit and multi-gig links are comfortably specified across a full-length run, so the distance limit applies only when a link runs at ten gigabit. Its ISO equivalent is Class E.
It also has no alien crosstalk specification, no limit on how much neighboring cables interfere with one another, so in a tightly packed bundle the practical ten gigabit distance can fall below even the fifty-five meters quoted. In a home with two or three cables running to different rooms that rarely matters, but in a riser carrying dozens of runs side by side it does.
Physically it is thicker and stiffer than the grade below, which affects how it routes through conduit and around tight corners, and it supports the full power-over-Ethernet range.
Where ten gigabit is the actual requirement over any real distance, the next grade up, Category 6a, was created precisely because this one does not stretch that far, and the single letter that separates the two names is easy to miss on a listing.
Category strengths
Where the Cat6 Ethernet Cable beats the median
- A higher 10 Gigabit reach ?55 m vs 42.5 m (median)
Where the Cat6 Ethernet Cable trails the median
- A lower bandwidth ?250 MHz vs 375 MHz (median)
- A much lower reach at top speed ?55 m vs 100 m (median)
How this VS Score was computed
Score 61: each known spec is measured against the median of all ethernet cables (8 products), then weighted; 50 means level with that median. In classes of six or more, a value beyond the class’s 10th–90th percentile range counts as that limit, so one extreme product cannot set the scale. 79% of the scoreable weight could be used; unknown values, features not applicable to this class and proxies (battery capacity where a rated life exists) add or remove nothing.
| Specification | This product | Cohort median | Score weight | Points moved |
|---|---|---|---|---|
| 10 Gigabit Ethernet | Yes | 63% of the class have it | 2 | +100.0 |
| Native RJ45 connector | Yes | 75% of the class have it | 2 | +100.0 |
| Recognition for new installs | Yes | 75% of the class have it | 2 | +100.0 |
| Multi-gig (2.5G / 5G) | Yes | 75% of the class have it | 1.5 | +75.0 |
| Shielded construction | No | 38% of the class have it | 1 | −48.0 |
| Alien crosstalk limits | No | 33% of the class have it | 1 | −48.0 |
| Bandwidth | 250 | 375 | 2.5 | −42.5 |
| Reach at top speed | 55 | 100 | 1.5 | −33.0 |
| 10 Gigabit reach | 55 | 42.5 | 2 | +30.0 |
| Maximum data rate | 10 | 10 | 3 | +0.0 |
| Typical shielding | U/UTP (unshielded) | U/UTP (unshielded) | 1.5 | +0.0 |
| Maximum PoE power | 90 | 90 | 1.5 | +0.0 |
Not scored: Gigabit Ethernet (standard for the class (88% have it)); 25G / 40G Ethernet (not applicable: only 13% of this class have it); Conductor material (unknown: not scored); Snagless boots (unknown: not scored); PoE++ (Type 4, 90 W) (standard for the class (88% have it)); Backward compatibility (standard for the class (100% have it)).
Editor’s note
Category 6 is where the twisted-pair story gets interesting, because its headline number comes with an asterisk that most retail listings leave out. TIA published it in June 2002 with 250 MHz of tested bandwidth, two and a half times Cat 5e, and it does carry 10 Gigabit Ethernet. It just does not carry it very far: the standard limits 10GBASE-T over Cat 6 to 55 meters, and in a tightly packed bundle that figure can fall further, because Cat 6 has no alien crosstalk specification to govern how neighboring cables interfere with each other.
Read that limitation the right way and Cat 6 looks excellent. Over a full 100-meter run it carries 5 Gigabit under 802.3bz, which is more than any home internet connection will need for years and enough for the busiest Wi-Fi 7 access point. Over the short runs typical of a home office, a rack, or a floor of desks, it carries the full 10 Gigabit. Power over Ethernet is unrestricted up to the 90-watt Type 4 class, and the thicker conductors most Cat 6 uses handle that power with less heating than thinner cable.
Construction is the visible difference from Cat 5e. Most Cat 6 is still unshielded, but it is stiffer and fatter, usually with a plastic spline down the middle separating the pairs, and it does not like tight bends or aggressive cable ties. Installers notice it, because the cable fills conduit faster and terminates more slowly.
For most people wiring a house or a small office in 2026, Cat 6 is the sensible default. It covers the multi-gig upgrade that is coming, and the case for Cat 6a rests on needing 10 Gigabit over a long run.
Specifications
Quality bars show where each figure sits between the lowest and highest of the 8 ethernet cables this VS Score is measured against.
Speed & reach
Construction & shielding
Power & connectors
Standards & status
Sources and verification
Where the specifications come from
- Official product pagestandards.ieee.org
- Datasheet or manualwebstore.iec.ch
Verification
- First published
- Specifications last checked
- Sheet completeness
- 22 of 28 specifications verified; the rest show as Unknown and are never estimated or scored
- Page type
- Product specification page — Compiled from the manufacturer’s published specifications and the cited sources; this is not a hands-on test.
- Basis
- Research-based: specifications and editorial text were compiled from the documents listed here and the manufacturer’s published data. We have not tested this unit ourselves; where independent measurements are mentioned they belong to the linked publication.
Ratings & reviews
No reviews yet. Be the first to share your experience.
The bottom line
The Cat6 Ethernet Cable earns a VS Score of 61, above the median of the 8 ethernet cables it is measured against (a score of 50 is level with that median).
- Who it’s for
- New home and small-office wiring that wants 5 Gigabit everywhere and 10 Gigabit on the short runs.
- Who should look elsewhere
- 10 Gigabit runs longer than 55 m, or dense commercial trunking where alien crosstalk must be specified.
- The trade-off that matters
- You get a real 10 Gigabit rating, but only for just over half a standard run.
- The main alternative
- Cat6a Ethernet Cable: ten gigabit across a full-length run
The VS Score is calculated from the weighted specifications above, each measured against the median of comparable ethernet cables — a shortlisting guide, not a substitute for your own priorities. See how we score.