CAT5 ,CAT6 and CAT 7 difference

Cat5

Cat5 supports speeds up to 100Mb/s (100 MHz)

Cat5e

Cat5e supports speeds up to a Gigabit Ethernet (1,000Mb/s) (100 MHz)

Cat6

Cat6 supports speeds up to 10 Gigabit Ethernet and can be achieved with distance of 37-55 meters or less depending on the grade of the cable and quality of installation. (1,000Mb/s) (250 MHz)

Cat6A

Cat6A supports speeds up to 10 Gigabit Ethernet with distance up to 100 meters (10,000 Mb/s)(500 MHz)

Cat7 & Cat7A

Cat7 & Cat7A support speeds up to 10 Gigabit Ethernet with distance up to 100 meters (10,000 Mb/s)(1000 Mhz)


Reference : https://www.quora.com/Whats-the-difference-between-cat-5-cat-6-and-cat-7-Ethernet-cables