Cat6 and Cat6A are both twisted-pair copper cables used for Ethernet networking. In most homes either will feel identical for years. The differences matter as distances get longer and network speeds increase.
Quick comparison
- Cat6: supports 10 Gigabit Ethernet up to about 55 metres.
- Cat6A: supports 10 Gigabit Ethernet up to the full 100-metre channel length.
- Cat6A cables are usually thicker and have tighter jacket construction to reduce interference.
When Cat6 is fine
Standard homes with short runs, a single access point, or general internet and streaming needs are well served by Cat6. It is easier to pull through tight spaces and cheaper per metre.
When Cat6A makes sense
- Multi-storey homes or offices where runs may exceed 55 metres.
- Backhaul to wireless access points where full 10 Gigabit headroom is useful.
- Small offices planning to keep the cabling in place for 10+ years.
How we recommend
On the quote we usually recommend Cat6A for anything commercial or long-run, and Cat6 for shorter residential runs — unless you specifically want the extra headroom.