| Category | Max speed | Bandwidth | Max distance | Best for |
|---|---|---|---|---|
| Cat5e | 1 Gbps | 100 MHz | 100 m | Most home networks and general use. |
| Cat6 | 1 Gbps (10 Gbps up to ~55 m) | 250 MHz | 100 m | Future-proofing and multi-gig over shorter runs. |
| Cat6a | 10 Gbps | 500 MHz | 100 m | Full 10 Gbps over long runs; gaming/NAS power users. |
| Cat7 | 10 Gbps | 600 MHz | 100 m | Shielded 10 Gbps; uses non-standard connectors. |
| Cat8 | 25-40 Gbps | 2000 MHz | 30 m | Data centers and very short, very fast links. |
Which cable do I need?
Recommended
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Which Ethernet cable should most people buy?
For a typical home, Cat6 is the sweet spot: it costs only a little more than Cat5e, handles gigabit easily, and supports multi-gig and even 10 Gbps over the shorter runs found in most houses. If you're wiring inside walls or want guaranteed 10 Gbps over long runs, step up to Cat6a. There's rarely a reason for a home user to buy Cat7 or Cat8.
A few things to know
- Your speed is capped by the slowest device. A Cat8 cable won't make a gigabit router faster.
- Distance matters. Standard Ethernet runs top out at 100 m (about 328 ft); beyond that you need a switch or fiber.
- Shielding (STP) helps in electrically noisy environments but is overkill for most homes, where unshielded (UTP) is fine.
Wondering whether wired even matters for you? See how much internet speed do I need?
Frequently asked questions
- What is the difference between Cat5e, Cat6, and Cat6a?
- Cat5e handles 1Gbps, Cat6 supports 10Gbps over short runs, and Cat6a sustains 10Gbps up to 100m with better shielding against crosstalk.
- Which Ethernet cable should I buy?
- For most homes Cat6 is the sweet spot. Choose Cat6a or Cat8 only for 10Gbps-plus runs or long distances. This guide recommends one based on your speed and distance.
- How far can Ethernet run?
- Standard copper Ethernet runs up to 100 meters (328 feet). Beyond that, use fiber or add a switch to extend the run.