Cat 6 supports speeds up to 10 Gbps over short distances (up to 55 meters).

Cat 8 can support speeds up to 25 Gbps or even 40 Gbps over distances of up to 30 meters.

2. Bandwidth:

Cat 6 has a bandwidth of 250 MHz.

Cat 8 offers a significantly higher bandwidth of up to 2000 MHz, allowing for more data to be transmitted simultaneously.

3. Distance:

While Cat 6 can reach 10 Gbps at longer distances (up to 100 meters), Cat 8 is optimized for shorter runs, focusing on high-speed connections in data centers and enterprise environments.

4. Shielding:

Cat 8 cables typically feature more advanced shielding (like S/FTP) to reduce interference and crosstalk, making them more suitable for high-performance environments.

Overall, if you need high-speed connections with minimal interference, especially in a data center or for specialized applications, Cat 8 is the better choice. However, for most typical home or office setups, Cat 6 may be sufficient.