This has been driving me absolutely crazy but I am glad to have found the source of it. Over the past 4-5 weeks ever since i built my new computer, my computer has always had this wierd high pitch noise. I dont know if its coil whine or not, but the sound signature is def not the same as the coil whine that comes from my 7970 card. It sounds more digital. What could be the cause of this? And what would the remedy be? My ethernet cable is approx 60 ft so it will be a pain in the ass to replace. Or buy another NIC? edit: forgot to mention....the noise is constant. Not intermittent with usage. No amount of load or idle on the network changes the noise.