Cat-6: This cable is defined in TIA/EIA-568-B provides a significant improvement in performance over Cat5 and Cat 5e.
During manufacture Cat 6 cables are more tightly wound than either Cat 5 or Cat 5e and they often have an outer foil or braided shielding.
The shielding protects the twisted pairs of wires inside the Ethernet cable, helping to prevent crosstalk and noise interference.
Cat-6 cables can technically support speeds up to 10 Gbps, but cat6 ethernet cable can only do so for up to 55 metres.
NOTE: 250-500Mhz/10 Gbps /100m.