In the overview below you can see the differences:
Cat5e – Has a speed to 1.000 Mbit/s, 100mhz
Cat6*– Has a speed to 1.000 Mbit/s, 250mhz
Cat6a*– Has a speed to 10.000 Mbit/s, 500mhz
Cat7 – Has a speed to 10.000 Mbit/s, 1.000mhz
The big difference between Cat6 and Cat7 is the frequency. As you may have already seen, a Cat7 cable and a Cat6 cable have the same speed. However, the Cat7 has a higher frequency than the Cat6.
The frequency indicates how often the signal can pass through the cable.
At a frequency of 1,000 MHz, 10,000 Mbit / s can therefore be transferred 10,000 times per second 10,000 Mbit / s.*
A Cat7 cable will therefore be able to transfer data faster than a Cat6 cable.
Source :
https://www.netwerkkabel.eu/en/blog/what-is-the-difference-between-cat-6-and-cat-7
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