Comparisons
Cat6 or Cat6a cable
Cat6 for a normal office — it carries gigabit over the full ninety metres and ten-gigabit over shorter runs, which covers everything most offices will do this decade. Cat6a costs more, is stiffer and harder to route in existing trunking, and pays back only where ten-gigabit to the desk is a real plan.
Written and reviewed by our networks and fiber bench · Last reviewed
What each actually delivers
Cat6 handles gigabit across a full-length run comfortably and ten-gigabit over shorter distances. Cat6a is specified for ten-gigabit across the full length. For a desk running a browser, a mail client and a file share, the difference is entirely theoretical — the bottleneck is the internet connection, not the cable.
The installation difference nobody mentions
Cat6a is thicker and stiffer, with a larger bend radius and more demanding termination. In existing trunking or a tight conduit run it is genuinely harder to install, which shows up as labour. On a retrofit into a finished building that difference can exceed the cable's price premium.
Where Cat6a is the right call
Runs to a server rack, links between switches, connections to a NAS handling large files, and any building where ten-gigabit to the desk is a funded plan rather than an aspiration. A sensible middle path is Cat6a on the handful of backbone runs and Cat6 to the desks.
What matters more than the category
Termination quality, keeping runs away from mains cabling, respecting bend radius, and certifying every point rather than checking it with a laptop. A badly terminated Cat6a point performs worse than a properly terminated Cat6 one, and plenty of poor terminations pass at a hundred megabits and fail at gigabit.
Should I use Cat6 or Cat6a for office cabling?
Will Cat6 still be adequate in ten years?
For desk connections in an ordinary office, very likely — gigabit to a desk is not the constraint on anyone's work, and ten-gigabit over shorter Cat6 runs is already possible. The component more likely to need replacing first is the switch, and that does not require recabling.
Is shielded cable worth it?
Only where there is a genuine interference problem — running alongside heavy machinery or a substantial mains run. Shielded cable must be properly earthed to work, and an incorrectly earthed shield can make interference worse. In an ordinary office, unshielded cable routed sensibly is the right choice.
Can I mix Cat6 and Cat6a in the same installation?
Yes, and it is often the sensible approach — Cat6a on backbone runs between switches and to a rack, Cat6 to the desks. Each run performs to the lower of the components in it, so keep a run consistent end to end rather than mixing within a single link.
Rather have it done?
Structured cabling gives every desk a labelled outlet running back to a patch panel in one rack, tested and certified. A twenty-point office in Islamabad runs PKR 4,500 to 7,000 per point installed, and it is what stops the network becoming a bundle of switches under a desk.
Structured LAN cabling for offices in Islamabad — prices and scope