Key points
- Fiber is the best all-round: fastest, lowest latency, symmetrical.
- Cable is fast to download but weak on upload.
- DSL is legacy copper being retired almost everywhere.
- Fixed wireless & satellite fill gaps where wires don't reach.
Connection types at a glance
| Type | Typical speed | Latency | Upload | Best for |
|---|---|---|---|---|
| Fiber (FTTP / FTTB) | 300 Mbps – 8 Gbps | 1–10 ms | Usually symmetrical | Best overall - Fastest, lowest latency, symmetrical. |
| Cable (DOCSIS) | 100 Mbps – 2 Gbps | 10–30 ms | Much slower than download | Widely available and fast down; weaker upload. |
| Fixed wireless 5G | 50–1000 Mbps | 15–50 ms | Asymmetrical | No wires; great where fiber isn't available. |
| DSL / ADSL (phone line) | 5–100 Mbps | 20–50 ms | Slow | Legacy copper; being retired in most areas. |
| Satellite (LEO - Starlink) | 25–220 Mbps | 25–60 ms | Asymmetrical | Rural areas with a clear sky view. |
| Satellite (GEO - HughesNet/Viasat) | 25–150 Mbps | 500–700 ms | Slow | Last-resort coverage; high latency. |
| Mobile 4G/5G (phone hotspot) | 10–500 Mbps | 20–70 ms | Asymmetrical | On the go; watch data caps. |
Fiber (FTTP / FTTB)
Fiber-optic internet sends data as pulses of light down glass strands. It's the gold standard: speeds from 300 Mbps to 8 Gbps, latency of just a few milliseconds, and - Crucially - symmetrical speeds, so upload matches download. "FTTP" (fiber to the premises) runs fiber all the way to your home; "FTTB" (fiber to the building) runs it to the building and uses a short copper or Ethernet run inside.
If it's available at your address and you do video calls, upload large files or run a busy household, fiber is almost always the best choice - It's the only mainstream option with fast, symmetrical upload speed. Its main limitation is coverage - It isn't everywhere yet.
Cable (DOCSIS)
Cable internet reuses the coaxial TV network and is the most widely available fast option in the U.S. Download speeds reach 1–2 Gbps on modern DOCSIS 3.1 plans, with low latency. The catch is asymmetry: upload is typically a small fraction of download (e.g. 300 down / 15 up), and because the local network is shared, speeds can dip during peak evening hours.
DSL / ADSL (phone line)
DSL delivers internet over copper telephone lines. Because voice uses only a narrow frequency band, data can share the same line - Which is why your phone still works during a session. It's slow by modern standards (5–100 Mbps) and speed drops sharply with distance from the exchange. Providers are actively retiring DSL in favour of fiber, so treat it as a fallback where nothing else is available.
Fixed wireless (5G home internet)
Fixed wireless beams internet from a nearby cell tower to a receiver in your home - No cables to your door. Modern 5G home internet from T-Mobile and Verizon delivers 50–1000 Mbps with reasonable latency and easy self-setup. Performance depends on your distance from the tower and signal strength, and speeds can vary with network load, but it's an excellent option where fiber isn't available.
Satellite
Satellite is the coverage option of last resort - Available almost anywhere with a clear view of the sky. There are two very different kinds:
- Low-earth-orbit (LEO), e.g. Starlink. Satellites orbit close to Earth, so latency is a usable 25–60 ms and speeds reach 25–220 Mbps. A strong choice for rural homes.
- Geostationary (GEO), e.g. HughesNet, Viasat. Satellites sit ~35,000 km up, so latency is 500–700 ms - Fine for browsing and streaming but poor for gaming and calls.
Run a speed test and look at two things: if upload roughly equals download, you're on fiber; if ping is 500 ms+, you're on geostationary satellite. A big download/upload gap with low ping points to cable or DSL.
Once you know your connection type, our fastest ISPs guide shows which providers offer the best of each in the USA.