I take 4 hours to drain, rebuild and carefully replumb a new loop for my 7970 LCS and after a quick leak test (a few hours - dry as a desert) I switch on the PC properly. And i get the most awful rattly whine from the card. I guess it's coil whine - never had it before on any card from either camp. I've downclocked to stock (925) but it still persists. I've overclocked but still persists. Is this an RMA case? I bought a liquid cooled card to complete my loop and play in blissful silence and instead i get this pish. Whatsthe verdict (I don't pay £530 for a liquid cooled solutiuon that makes more noise than a fan).