back when i first got my 1900xtx i thought jeesh this thing is hot.. 90 C what the hell.. but short of water cooling it there wasnt much to be done about it.. but nowhere have i ever heard of a 1900xtx dieing thru that 90 C so it must be okay..
intel P4 prescots cpus ran at 100 C.. again never have i heard of one dieing thru it..
many passive card have come on the maket running 90 C and over.. they dont die from it..
however.. if your ati card wont run as its comes set up by ati. its faulty.. mine runs perfectly at 90 C just like my 1900xtx did.. perfectly overclocked not just at stock..
now the bottom line.. if a card is clocked up near its instability point running at say 70 C as opposed to 90 C might just make it stable.. its probably good for an extra 5 to 10 mhz core speed..
now if ati are selling cards at stock clocks that close to the edge of stability they need to be sent back..
both my 3870 cards run perfectly stable at 90 C all day long clocked at 830/1230..
sorry i dont have a faster fan bios for the 3850 GLD.. but the one i posted for the 870 both unlocks the 862 blackscreen on early cards and runs the fan well faster..
try this place GLD.. look for gecube or HIS turbo bios.. thye might run the fan faster