What is Latency and Ping?
The most important metric you've never heard of. Why 'Ping' matters more than 'Speed' for many users.
What is Latency and Ping? The Science of Internet Lag
Executive Summary
In the world of internet connectivity, "Speed" is how much data you can move, but "Latency" is how fast that data starts moving. For gamers, remote workers, and anyone using video calls, latency (often measured as "Ping") is the single most important metric for a smooth experience. This guide breaks down what latency is, why it happens, and how to minimize it.
Latency vs. Bandwidth: The Water Pipe Analogy
Imagine a water pipe.
- Bandwidth (Speed): The width of the pipe. A wider pipe moves more water.
- Latency (Ping): The length of the pipe. A longer pipe means it takes longer for the first drop of water to reach the other end.
Why Latency Matters
- Gaming: High latency causes "lag," where your character moves seconds after you press a button.
- Video Calls: High latency causes that awkward "no, you go ahead" delay where people talk over each other.
- Web Browsing: High latency makes a website feel "sluggish" to load, even if you have a 1Gbps line.
Comparison: Typical Latency in South Africa
| Connection Type | Local Ping (SA) | International Ping (EU) |
|---|---|---|
| Fibre | 2ms - 10ms | 135ms - 155ms |
| Fixed LTE | 20ms - 50ms | 180ms - 220ms |
| 5G | 15ms - 40ms | 170ms - 210ms |
| Satellite (Starlink) | 25ms - 60ms | 160ms - 200ms |
What Causes High Latency?
- Physical Distance: Light travels fast, but it still takes time to go from Cape Town to London and back (approx. 13,000km).
- Routing: The number of "hops" (stops) your data makes at different servers along the way.
- Congestion: If the "highway" is full, your data has to wait in line.
- Local Hardware: A cheap or overloaded router can add 20-50ms of lag.
Practical Checklist: Reducing Your Ping
- Use an Ethernet Cable: Wi-Fi adds 5-20ms of "jitter" and latency.
- Choose a Local Server: In games, always select the "South Africa" or "Johannesburg" region if available.
- Close Background Apps: Apps like OneDrive or Dropbox syncing in the background can spike your ping.
- Check your ISP's Routing: Some ISPs have better "direct" routes to Europe than others.
Next Steps
Get a connection that reacts as fast as you do.
Related Guides
Frequently Asked Questions
Can I lower my ping to Europe?
Not really. Physics limits the speed of light through fibre. The absolute minimum ping from SA to London is around 130ms. If your ping is 200ms, your ISP's routing is likely the problem.
Does a faster line (e.g., 1Gbps) lower my ping?
No. Speed and latency are independent. A 10Mbps line and a 1000Mbps line will have the same ping if they use the same route.
What is a 'Good' ping?
For local gaming, <20ms is great. For video calls, <100ms is unnoticeable. For international gaming, 140ms-160ms is the standard for SA.
Next Steps
Ready to put this knowledge into practice? Use our tools to find the best fibre connection for your home or office.