Wired vs Wireless Internet Speed — Ethernet vs WiFi Compared
Ethernet (wired) is faster, more stable, and lower latency than WiFi in virtually every situation. The question is whether the difference matters enough to justify running a cable. For gaming, working from home, and 4K streaming, the answer is usually yes. For casual browsing and basic streaming, WiFi is often sufficient. Test your current connection — wired or wireless — with our free speed test.
Ethernet vs WiFi — Technical Comparison
| Feature | Ethernet | WiFi (Wi-Fi 6) | WiFi (Wi-Fi 5) |
|---|---|---|---|
| Max Speed | 1 Gbps (Cat5e), 10 Gbps (Cat6a) | 9.6 Gbps theoretical | 3.5 Gbps theoretical |
| Real-World Speed | Matches your plan (full speed) | 50–80% of plan speed | 40–70% of plan speed |
| Latency | 1–2ms added | 2–10ms added | 3–15ms added |
| Jitter | Under 1ms | 2–20ms | 5–30ms |
| Interference | None | Microwaves, neighbors, walls | High susceptibility |
| Consistency | Excellent | Variable | Variable |
Why Ethernet Always Wins on Latency
WiFi uses CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) — devices must wait their turn to transmit, introducing variable delay. Ethernet uses a deterministic, full-duplex connection with no waiting — data flows both directions simultaneously without interference. This is why wired gamers consistently achieve lower and more stable ping than WiFi users. Switching from WiFi to Ethernet typically reduces jitter from 5–20ms to under 1ms, which is more impactful for gaming than any other single change. See our guide to fixing gaming lag for the full optimization checklist.
When WiFi Is Good Enough
Modern Wi-Fi 6 on a clear 5 GHz channel can deliver 400–800 Mbps with 5–10ms latency — perfectly adequate for 4K streaming, casual gaming, and video calls. WiFi struggles when: walls and distance attenuate the signal; many neighboring networks compete for the same channels; multiple devices simultaneously demand high bandwidth; or you need the absolute lowest latency for competitive gaming. See our guide on 2.4 GHz vs 5 GHz WiFi to ensure you’re connecting to the optimal band.
Related Guides
- WiFi 6 vs WiFi 5 Speed Difference
- 2.4 GHz vs 5 GHz WiFi
- Does Router Placement Affect Speed?
- Fiber vs Cable Internet
- Fix Gaming Lag Without a VPN
- What Is Latency?
Frequently Asked Questions
How much faster is Ethernet than WiFi?
On a 100 Mbps plan, Ethernet typically delivers 95–100 Mbps while WiFi delivers 60–80 Mbps. The percentage gap grows with plan speed: on a 1 Gbps plan, Ethernet delivers 900+ Mbps while WiFi typically caps at 400–700 Mbps depending on Wi-Fi generation, distance, and interference. The latency difference is proportionally larger: Ethernet adds 1–2ms vs WiFi’s 5–15ms added latency.
Is Ethernet worth the hassle of running cables?
For desktops and gaming PCs — absolutely yes. For smart TVs used for 4K streaming — yes if you notice buffering. For laptops you move around — probably not worth the compromise in mobility unless you’re doing intensive work or gaming. Powerline adapters and MoCA adapters offer a middle ground for devices that need wired performance without new cable runs.
Does Ethernet eliminate jitter?
Nearly — Ethernet reduces jitter to under 1ms from the home network side. Residual jitter from ISP infrastructure or server-side issues still exists but is typically 2–5ms. The WiFi contribution to jitter (often 5–30ms) is the largest contributor to network instability in most homes, and Ethernet eliminates it entirely.