I had the same problem. Played TES Oblivion and got up to 110degrees celcius when the card automatically slowed down with a warning. mid 60s idle. Blamed my new PSU at first (the kind that blows air inside.. stupid for buying, i dont need a silent pc anyway). Cleaned the card, now its back at 40 idle and mid 50s when playing oblivion!! Never would have tried screwing it open, just clean the fan normally..
thanks!
thanks!