Unfortunately, without actually having real life experience using 10Gbps I'll not know how much I'll get using any of the cables I have.
Something else to bear in mind apart from the cable we must not forget the hard drive and network card. You need a motherboard that supports 10Gbps or upgrade to a 10Gtek® 10Gb PCI-E NIC Network Card.
Unfortunately, most motherboards even amongst the best only give 2.5Gbps. I was looking at various motherboards to upgrade my PC and noticed how only a few even had 2.5G LAN.
The 10Gbps LAN motherboards can be found
https://www.gigabyte.com/sg/Motherboard/10GbE-LAN
They cost a whopping £1200 more expensive than a high end gaming PC! Ok, I found the cheapest one Gigabyte Z690 AORUS MASTER £464.99
Still you might be better off getting a cheaper motherboard and separately buy a 10GbE LAN card.
Conventional hard drives can also be a bottleneck and might not even give full 1Gbps! Here's what I found out.
A typical 7200 RPM HDD will deliver a read/write speed of 80-160MB/s. 80Megabytes=0.64Gbps.
So if you were to use a traditional hard drive in speed test you'll be limited to as low as 640Mbps. Solution? Needs upgrading to Solid State Drive and reinstalling Windows or any other OS on it. Where as a typical 2.5' Sata SSD will be 560MB/s, which in gigabit 560MB/s is 4.48 Gigabits.
To harness 10Gbps or more you need the latest SSD M.2 but only motherboards with SSD M.2 slot will allow such installation. Along with 10GbE LAN support or network card and the cable that comes last!
This is why Community Fibre limit to 3Gbps because most customers simply don't have the required hardware to run it.
Because the hard drive has a write/read speed limitation broadband speeds have to be capped at a certain speed or you won't achieve them due to this bottleneck. 4.48Gbps is the most realistic FTTP speed package expectation for the mainstream market. But not many people know that they need high end PCs. It is also the CPU processor that needs upgrading.