Top Picks at a Glance
| Product | Max Speed | Max Length | Shielding | Price/Ft | Best For |
|---|---|---|---|---|---|
| 1. Cat5e (Cable Matters) | 1 Gbps | 100 m | Unshielded (UTP) | $0.15 | Budget gigabit runs |
| 2. Cat6 (Monoprice) | 1 Gbps (10G to 55m) | 100 m | Unshielded (UTP) | $0.20 | Best all-around home cable |
| 3. Cat6A (Cable Matters) | 10 Gbps | 100 m | Shielded (STP) | $0.40 | 10 Gbps runs, patch panels |
| 4. Cat7 (Dacrown) | 10 Gbps | 100 m | Shielded (SSTP) | $0.45 | Note: not an IEEE standard |
| 5. Cat8 (Jadaol) | 25–40 Gbps | 30 m | Shielded (SSTP) | $0.60 | Data centers only |
Our Picks in Detail
- Speed overhead: 1 Gbps
- Speed overhead: 1 Gbps (10G to 55m)
- Speed overhead: 10 Gbps
- Speed overhead: 10 Gbps
- Speed overhead: 25–40 Gbps
Cat5e vs Cat6 vs Cat6A: What You Actually Need
Cat5e supports gigabit speeds at up to 100 meters and is sufficient for any internet plan under 1 Gbps. Cat6 adds headroom for 10 Gbps at shorter distances (up to 55 m) and has better crosstalk resistance — it's the better choice for new installations at minimal extra cost. Cat6A supports full 10 Gbps at 100 meters and is the right choice if you have a 2.5 Gbps or 10 Gbps capable device or plan. Cat7 is not an official IEEE standard despite the marketing — avoid it. Cat8 is designed for data centers with 25–40 Gbps equipment and limited to 30-meter runs.
Does Ethernet Cable Quality Affect Internet Speed?
For runs under 10 meters indoors, any certified Cat5e or Cat6 cable delivers full gigabit speeds — cable quality at short distances has negligible impact. For longer runs (30–100 meters) through walls, ceilings, or outdoor environments, shielded cable (Cat6A STP) resists interference better. The connector quality (RJ45 crimp vs pre-terminated) matters more than the cable category for most home installations.
Pre-Made vs Bulk Cable + Crimping Your Own
Pre-made patch cables are easier and fine for most uses — plugging equipment together within a room or short rack runs. Bulk cable is cost-effective for longer runs through walls, where you need a specific length and want a clean installation. Bulk Cat6 costs $0.10–0.20/foot plus connector cost; you need a crimping tool ($20–30) and RJ45 connectors. For 10+ meter runs, bulk cable with wall plates is the professional approach.
Running Ethernet Through Walls: What You Need to Know
In-wall Ethernet runs require cable rated for in-wall use — look for "CL2" or "CL3" ratings on the cable jacket, which indicate it meets fire safety codes for installation inside wall cavities. Standard patch cables sold in pre-made lengths are not rated for in-wall use and should not be run through walls. Use bulk Cat6 or Cat6A with the appropriate in-wall rating for any permanent installation.
For most home runs of 10–50 meters, Cat6 UTP (unshielded) is the right choice — it is easier to pull through conduit and terminate than shielded cable, and it delivers full gigabit performance at these distances without interference issues in typical home environments. Shielded Cat6A becomes worthwhile when the cable runs parallel to electrical wiring for long distances, or in environments with significant electromagnetic interference such as near industrial equipment. When running cable through walls or attics, use a fish tape or conduit to protect the cable and make future replacement easier. Pre-installed conduit adds cost upfront but saves significant labor if you ever need to upgrade to a higher-category cable later.
Frequently Asked Questions
Is Cat8 ethernet overkill for home use?
Yes, almost always. Cat8 supports 25–40 Gbps but is limited to 30-meter runs and costs significantly more. Home internet plans are under 10 Gbps, and even multi-gig fiber plans (2–5 Gbps) are handled comfortably by Cat6A. Cat8 is designed for data center server rack connections, not household cable runs.
Does a longer ethernet cable reduce speed?
Not meaningfully under 100 meters for Cat5e and above. Gigabit ethernet is specified to work at full speed up to 100 meters on Cat5e. Beyond 100 meters, you need a switch or repeater — signal attenuation becomes a problem.
Can I use ethernet cable outside?
Only if it's rated for outdoor use (marked 'outdoor' or 'direct burial'). Standard ethernet cable is not UV-resistant and will degrade within 1–2 years outdoors. Outdoor-rated Cat6 or fiber optic cable (with a media converter) is the right choice for runs between buildings or along exterior walls.