What is the difference between bandwidth and throughput?

Bandwidth is the maximum rate a link supports. Throughput is the rate you actually get, which is lower because of latency, packet loss, congestion and server speed.

How many MB per second is 100 Mbps?

12.5 MB/s at most, because one byte is eight bits. Real downloads are a little lower because of protocol overhead.

What does unlimited bandwidth mean for proxies?

Usually that data transfer is not metered or capped: you pay per IP, not per GB. Speed is still limited by the network and the target site.

How much bandwidth does web scraping use?

It depends on page size and method. Plain HTTP requests for compressed HTML often cost tens to a few hundred KB per page; a headless browser that loads images and scripts can use several MB per page.

Is per-GB or per-IP pricing cheaper?

Per-IP with unlimited bandwidth is cheaper for heavy, steady traffic from a fixed set of IPs. Per-GB is cheaper when you need many rotating IPs or locations but move modest volumes.

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What Is Bandwidth?

Bandwidth is the maximum amount of data a connection can carry per second, measured in bits per second (Mbps or Gbps). It is the size of the pipe; throughput is how much actually flows through it, and data transfer is the total volume you move.

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Bandwidth vs throughput vs data transfer

The three words get mixed up constantly, including in proxy pricing. Speeds are quoted in bits; files and data plans in bytes. One byte is eight bits, so a 100 Mbps line moves at most 12.5 MB per second, and a 1 GB download takes at least 80 seconds on it.

Bandwidth
This term
Means
Maximum rate the link supports
Unit
Mbps, Gbps
Limited by
The line or port
In proxy pricing
Port or line speed
2
Throughput
Means
Rate you actually achieve
Unit
Mbps, MB/s
Limited by
Latency, packet loss, the slowest hop, the server
In proxy pricing
What your scraper really gets
3
Data transfer
Means
Total volume moved
Unit
MB, GB
Limited by
How much you request
In proxy pricing
What per-GB plans bill

why it matters

Why throughput falls short of bandwidth

A download only goes as fast as the slowest part of its path. TCP also ramps up gradually and slows down when it detects loss, so high latency or a little packet loss can keep throughput well below the line rate. For many small requests, latency and concurrency matter more than bandwidth: a scraper fetching 50 KB pages one at a time will never fill a fast line.

Bandwidth: what it means for you

Run requests in parallel to use the bandwidth you have; see concurrency.
Turn on compression (Accept-Encoding: gzip, br) so the same pages cost fewer bytes.
Skip images, fonts and video in headless browsers when you only need the HTML or the data.
Estimate volume before you buy: 100,000 pages at 100 KB is about 10 GB; full browser page loads with media are often 2 MB or more each.

in practice

What unlimited bandwidth means on proxies

Proxy providers bill in two ways. Per-IP plans usually come with unmetered data transfer, so heavy jobs cost the same as light ones. Per-GB plans meter every byte through the gateway, including request headers, TLS overhead and anything a browser loads that you did not need.

CleanProxies static ISP proxies and ISP subnet proxies are priced per IP with unlimited bandwidth and threads. Rotating residential and mobile proxies are billed per GB, and that GB never expires. The proxy cost calculator compares the two for your volume.

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Dedicated IPs on US carrier ASNs with unlimited bandwidth and threads, never shared.

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Dedicated static IPs registered to US and Canadian ISPs. The address stays the same for as long as you hold it, with unlimited bandwidth and HTTP(S) or SOCKS5 access.

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