Possibly an unstable overclock. have you tried it at lower clocks or something? What clocks does this occur at? did you alter the voltage or anything like that?
Originally Posted by bratboy
I seem to be having the same or simular issue. When I'm in 2d mode with my Sapphire 5970 OC I get this occational blip across the top of my screen. I'm only running one monitor and not overclocking above the cards default of 735/1010 setting.
I did notice at another forum where someone said that turning off ATI Overdrive fixed the problem. I have it turned on because I thought that was the only way the fan would auto adjust. Am I making an incorrect assumption and if I disable Overdrive will the fan still run in auto mode?
Originally Posted by Dopamin3
Sapphire cards have a problem with fan control. You need to flash the card to a new bios in order to get automatic fan control to work. Check out this thread for more information: 5970 Bios Update for Fan Control Fix - Links Here