I just begun overclocking my 290 yesterday and I noticed the fans and temperatures were getting quite high. It was interesting because I only raised the voltages by +100 and have the core clocked at 1150Mhz. The temperatures go up to 85C and the fans speeds ramp up to ~60%. Also the fans %60 almost sound like the reference card, or at least I think it does. This is all while running FurMark. Is this normal? I've talked to Sapphire and they say to RMA it but some people from LTT say it's normal for these temps as it is a 290. But I'm worried about the loud fans the most.