Interesting info ShinyAli! Hope more will be contributed to this thread in this way. Also an update on my exploits. The faulty AX850 is in the process of having a replacement sent to me direct from SCAN with not a penny extra spent on my side. Although I do have the luxury of free postage now and again thanks to a friend so that took care of sending the busted AX850! Then the ASUS GTX 670 has been tested as faulty but unlike SCAN this retailer is sending it onwards to ASUS themselves to provide the replacement. However a 'reasonable' time scale of 28 days has been provided. More on this as it develops!