Cat5e and Cat 6 are currently the most popular Cables being used for data transmission. For Cat5E, “E” stands for enhanced.
CAT6 is the 6th generation of twisted pair Ethernet cabling and has tighter twist that makes the ability to transfer more data. Cat6 can handle a lot of data throughput than Cat5e. It also has a separator helps in keeping equal spacing between pairs. CAT6 supports Gigabit (1000 Mbps) Ethernet and supports communications at more than twice the speed of Cat5e. Installers should make sure that when punching Cat6 cable, they should be able to retain the twist as close to the termination as possible for faster data transfer. Because the conductor sizes are generally the same, Cat 6 jacks may also be used with Cat 5e cable. Both cables have four cable pairs which is standard for all data cables these days. Cat5 is the 5th generation of twisted pair Ethernet cabling and was designed for transmission speeds of up to 1 gigabit per second (Gigabit Ethernet). The maximum length for CAT5e cable is pegged at 100m or around 300 beyond that you would need repeaters. Both Standard cables comes with PVC jacket. PVC jacket cables are not allowed for plenum rated ceilings. For Plenum rated office, you would need Cat5e and Cat6 FT4 or FT6 which has fire resistant jacket and not produce toxic fumes when there is first in the building.
Now the question which cable should I use cat5e or Cat6. If you plan to lease the building for a shorter period of time say 2-3 years, go for Cat5e cabling because it is very inexpensive, however if you plan a long term stay or buying a unit, we would always recommend Cat6 which has faster rate of data transmission. Category 6 will be very effective in the residential market to support higher Internet access speeds while facilitating the more stringent Class B EMC requirements. Cat6 offers greater transmission performance and better immunity from external noise and disturbances. The devices working on Cat6 would have fewer errors and data loss or data corruption as compared to Cat5.