I just got hold of an x1900XTX to replace my x1800XT, as it cost me pretty much nothing to do so but I've noticed that the idle temp (43c) is 12c lower than the x1800XT used to be!? This means that the new load temps are now about the same as the old card was at idle! I don't think the temperature sensor is wrong either because the fan noise is definately less audible than it was before and both cards are the same make. Not that I'm complaining but can anyone think why this would be the case?