i have 2 graphic card one radeon 5750 and a asus radeon 6990.Now i use the 6990 for mining, so it is in full load all the time.But i see the gpu clock from the 6990 jump to 880 like it has to, but after some minutes the gpu clock starts falling from 880 back to 500 and then jumps up again. It wil do this every second.I have re installed the drivers, no luck, tried different drivers also no luck.I have re installed windows completely and all drivers. Have installed afterburner beta and turned off ULPS. When i have my 5750 mining aswell, then the core two of the 6990 will go up to 880MHz and stays there like it should be.Tryed the 13.8 drivers, the new beta driver, 12.8 driver, 12.10 driver.One more thing, when i look at the usage it is saying 100% for both the 6990 cores, but i needs to also stay ay 880MHz, but ist not doing that
How do i solve the problem ?
Videocard: Vapor-X HD5750/Asus 6990
Processor: Phenom2X4 965 with Corsair H50 cooling
Mainboard: Gigabyte 790XT A-UD4
Memory: DDR3 Black Dragon 8GB
Soundcard: creative X-FI XtremeMusic
PSU: cooler master gx 750