My rig currently runs a 3 year old radeon hd 7850 ghost and recently I tried my hand at overclocking so I downloaded MSI afterburner and have had success with it but in watching the temperature on my card, I've noticed that the fan doesn't kick on until my manually set fan curve hits about 85%. I thought this might be a feature of the card where it keeps it off until the card really needs it to reduce on sound but I haven't found anything like that online for my card. I don't need my card to be as quiet as it is, I'd rather it have a long and prosperous life. The card idles right now at around 70 degrees which is too hot for my liking and can hit up to the mid 80s under load which really surprised me because my case is pretty open and has good air flow. One of the first things I tried was to reapply the thermal paste which seemed to help the temperature a bit but didn't solve the fan problem. But that also means I would prefer to fix it myself since I voided the warranty by unscrewing those cooler screws (which I probably shouldn't have done but here we are). I also recently cleaned out the dust in my rig so I don't think its dust related unless it's in the fan's ball bearings. Does anyone have any ideas on whats going on / how to fix the problem?
Thanks!