For testing high-speed internet connections (1Gbps or higher), 10GB test files from sources like Tele2 and Hetzner allow for accurate, maximum throughput measurements. Best practices for these tests include using command-line tools like
Use command line to create a 10GB dummy file – no download required.
: A well-known European resource that uses 10Gbps NICs to ensure the server isn't the bottleneck during your test. How to Create a Local 10GB File
A 10GB download test file solves three critical problems: