ATI 4870 1GB fan going nuts during games with particles
Sapphire ATI Radeon 4870 1gb AMD Phenom II 965 BE 6gb DDR2 RAM BFG 650W PSU Gigabyte MA785GM motherboard
My graphics card fan & temperature goes completely nuts when i play many games such as Battlefield 2, Counter-strike, or any game with dust particles flying around, and then goes back to normal when they disappear, it's loud enough to sound like a jet engine is taking off.. I've updated drivers to 10.12 as well, no changes. Everything is at stock speed.
More about4870 nuts games particles
Idk man my Sapphire 4830 does that when i play racing games with alot of smoke, doesnt seem to hurt anything so unless the noise bugs you i wouldnt worry about it much.
The more dust/particles for the card to render, the higher the workload/heat. You both mentioned AMD 4xxx cards which are getting older now. Perhaps you just need to clean the heatsinks?