Business telecoms, done properly · broadband, phone systems, mobile & Wi-Fi

Insights

100 Mbps vs 1 Gbps: will your business actually notice the difference?

Published 6 May 2026 · 6 min read

Full fibre broadband delivering high speeds to a business

A gigabit sounds ten times better than a hundred meg, so it must be ten times better, right? Not for most businesses. Bigger is not always better value, and a lot of companies pay for headline speed they will never come close to using. Here is how to tell whether the jump from 100 Mbps to 1 Gbps would change your working day, or just your bill.

Most single tasks use surprisingly little

The thing to grasp is that individual jobs are light. A high-quality video meeting uses only a few Mbps. Browsing, email and cloud apps are lighter still. So a 100 Mbps line is not one person on a fast connection; it is enough headroom for a lot of those small tasks happening at once. The maths adds up more slowly than people expect: even a busy office of a dozen or two people, all on calls and cloud software, rarely troubles a solid 100 Mbps line.

Bandwidth is shared, not per person

Your speed is a shared pool, not a portion handed to each desk. That sounds like an argument for more, but in practice usage is bursty. People are not all downloading at the exact same instant, so the pool stretches much further than a simple headcount suggests. What actually breaks an office is rarely raw bandwidth; it is a weak Wi-Fi corner, a saturated upload, or a congested, over-shared line, none of which a bigger download number fixes.

Where a gigabit genuinely earns its place

  • Lots of heavy users at once. Large teams routinely moving big files, not just calling and emailing.
  • Serious file transfer. Media, design, architecture, CAD, video, where multi-gigabyte files move all day.
  • Heavy upload demands. Many 4K cameras recording to the cloud, or large daily offsite backups.
  • A whole building or multiple tenants. When one connection feeds far more than a single team.
  • Deliberate headroom. If you are growing fast and want to buy once rather than upgrade in a year.

The upload trap

Here is the catch that costs businesses the most. A 1 Gbps consumer-style broadband product is usually a gigabit down with a much smaller upload. If your actual pain is upload, stuttering calls, CCTV struggling to reach the cloud, slow backups, then a gigabit-download line will not fix it. What fixes it is a symmetric connection, the same speed up as down, which is exactly what a leased line gives you. A symmetric 100 Mbps can outperform a gigabit-down line for the things that were annoying you in the first place.

If your day is mostly...Would a gigabit help?
Email, browsing, cloud appsNo. 100 Mbps is comfortable.
Video calls and VoIPNo. Fix upload and latency instead.
A few cameras to the cloudRarely. Check your upload, not download.
Constant large file transfersOften yes, ideally symmetric.
A big or fast-growing teamWorth it for headroom.

A quiet, business-grade 100 Mbps line with low contention and steady latency will beat a busy, heavily shared gigabit line for almost everything an office does day to day. Consistency beats a big number on a sticker.

A simple way to decide

Ask one question: how often do we actually have several people moving large files at the same time? If the honest answer is rarely, 100 Mbps is almost certainly plenty, and your money is better spent on reliability, upload and good Wi-Fi. If the answer is often, or you are growing quickly, that is when a gigabit, ideally a symmetric one, starts to pay for itself.

How Synergy Max helps

We would rather right-size your connection than sell you a number you will not use. We look at how many people really push the line at once, whether your pain is upload or download, and how much headroom your plans need, then recommend accordingly. For the fundamentals behind all this, see our guides to what the speed figures mean and how much bandwidth a business really needs.

Paying for a gigabit you never use?

We will look at how your team actually loads the line and tell you honestly whether more speed would change anything, or whether the fix is upload, contention or Wi-Fi.