// Guaranteed bandwidth

Guaranteed bandwidth. Not “up to”.

Most “unmetered” hosting sells a shared “up to 25 Gbps” buried in fine print. Here the 25 Gbps port is yours, contractually guaranteed, and traffic is never counted. And we measured it with iperf3 to prove it.

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Contractually guaranteedUnshared portNo traffic quotaMeasured with iperf3
// Guaranteed vs shared vs metered

Three very different things with the same name.

“Unmetered”, “up to X Gbps” and “guaranteed bandwidth” sound alike and cost wildly differently. This is the difference that decides whether your server performs at 3pm or crawls.

What we give

Guaranteed (committed)

The 25 Gbps port is reserved for your server and committed by contract. It performs at that speed at any hour, whether you saturate it or not. It is what serious production needs.

Real speed, always
The cheap default

Shared / “up to”

A 25 Gbps port split across many servers. The “up to” only shows up at 4am; at peak you compete with your neighbours and speed collapses right when you need it most.

Fast… when nobody else is on
The other model

Metered (with quota)

Traffic counted per TB: speed can be good, but every terabyte adds to the bill, and going over means throttling or overage fees. Unpredictable for large, sustained loads.

The meter is always running
// Network measured, not promised

We don’t promise it: we measured it.

Before offering these servers we validated their network with real load tests (iperf3) from a 40 Gbps dedicated box in central Europe. These are the numbers, untouched.

+11 Gbps
sustained throughput on a single connection — and up to 21 Gbps in multi-connection tests
15.5 ms
average latency to central Europe, with ±0.1 ms jitter
0%
packet loss across sustained 45s tests at full load

Our own iperf3 measurements (July 2026) from a 40 Gbps dedicated server in Frankfurt against the London datacenter. Indicative results: effective speed depends on the remote end and the route.

// When guaranteed bandwidth is the difference

When moving data is your job.

If your workload lives on pushing or pulling a lot of data continuously, a guaranteed port stops being a luxury and becomes the bottleneck you choose to avoid.

CDN and file distribution

Serve downloads, updates and heavy content to many clients at once without per-user speed dropping at peak.

Backups and mass storage

Upload and restore terabytes in short windows. With a guaranteed, quota-free port, a 5 TB backup blows up neither the bill nor the clock.

AI: datasets and inference

Move huge datasets between nodes and serve models under many concurrent requests. Bandwidth stops limiting training and serving.

Dense virtualization

Dozens of VMs or containers sharing a real NIC. Each instance gets actual throughput without fighting over the port.

Mirrors and repositories

Repo mirrors, container registries or package replicas that many clients hit at once, with guaranteed sustained speed.

Voice, gaming and real-time

Voice servers, game servers and real-time backends where low jitter and zero loss matter as much as raw megabits.

// What this costs on the market

The same thing, out there, costs something else.

A truly guaranteed 25 Gbps is not cheap on the market — when you even find it published. Most “budget” hosting at that number sells you something else.

ProviderWhat you getPrice/mo approx.
25G specialistsReal guaranteed 25 Gbps~€1,800
One-off dealsOccasional 25 Gbps unmetered~€550-650
Typical “budget” dedicated1-3 Gbps guaranteed (the 25G is private)~€90-280
PulsarHost25 Gbps guaranteed, unshared, no quotafrom 239,99€

References: public prices of European and North American providers, August 2026 (entry plan, ex-VAT, rounded). The “budget dedicated” usually advertises 1-3 Gbps guaranteed public bandwidth and reserves the 25 Gbps for the private network. Always check the provider’s page.

// Frequently asked

What an engineer would ask.

The real questions before renting a high-bandwidth dedicated server. Missing one? Write to info@pulsarhost.es.

What does “guaranteed 25 Gbps port” mean?
That your server has 25 Gbps of network capacity committed to it, not a theoretical maximum you share with others. The speed is available at any hour, whether you use it at 100% or 2%. It is committed bandwidth, not best effort.
Are “guaranteed” and “unmetered” the same thing?
No, and that is why we separate them. “Unmetered” means traffic is not counted (you don’t pay per TB). “Guaranteed” means the port speed is committed. Lots of hosting is unmetered but on a shared “up to X” port. Here you get both: a guaranteed 25 Gbps port AND no traffic quota.
How do I verify it is really 25 Gbps?
With iperf3 against a reference point, exactly as we did. Our tests gave +11 Gbps sustained per connection (up to 21 Gbps multi-connection), 15.5 ms latency and 0% loss. The effective ceiling also depends on the remote end and the route — which is why we publish the method, not just the number.
What happens if I use the port at 100% all month?
Nothing: it is yours. No traffic quota, no fair-use policy, no throttling past a threshold. Use the full capacity continuously, 365 days a year. In writing.
Can I go up to 100 Gbps?
Yes. The London AMD EPYC range ships with a dedicated 100 Gbps unmetered port. If your workload grows beyond 25, you scale machine without switching provider or network philosophy.
Where are these servers and what hardware do they run?
In a Tier III datacenter in London, on enterprise Dell PowerEdge (R640, R740xd and above) with Xeon Scalable or EPYC. Catalog units are preinstalled with instant delivery; custom configurations, in 24-72h.

Stop sharing your port.

25 Gbps guaranteed, unshared and quota-free, on London Dell PowerEdge. Real stock and instant delivery.

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