I was wonder if we really need good expensive branded cables for digital signals. This came to my mind after looking at what computers are using for transferring data (either harddisks or network). Those CAT 5e/6 cables are capable of 1Gbps. Those PTFE SCSI cables are capable of speeds of 1.28Gbps. Even normal IDE cables are capable of 1.064Gbps. This is done in an environment far more hostile. Yet, it does the job w/o losing anything. Thus I was wondering if those cheap computer cables can do the job, how come we need such expensive cables for digital transfer?