Here's some more info about Cat7 cables :
1. Each pair individual shielded to perform excellent protection against noise.
2.Triple-layer extrusion (Skin/Foam/Skin) on insulation core to perform perfect attenuation.
3.10dB ACR at 600MHZ Positive ACR at 750MHZ.
4.Tested up to 750MHZ 5.LSOH version in conformity with IEC 332.3 Cat.
5.C Fire Retardancy Requirements.
Connectors
TWO Rows RJ45 8P8C Gold Plating 50 u"
Cable Discription Technical
CAT.7" 600MHZ, 4-Pair 23AWG, SSTP, DIN 44312-5 & EN 50288-4
Characteristic Impedance:
100~150 Ohm @ 64 KHZ 85~115 Ohm @1~300MHZ 75~125 Ohm @300~600MHZ
Velocity of Propagation:
0.78C @1~100MHZ
Cheers

~pranav
The greatest pleasure in life is doing what people say you can not do..!!