I have an issue with Sapphire Nitro radeon R9 390 8 GB and Seasonic S12II-620 power supply. My PSU is almost silent on desktop, browsing internet and soft gaming, but when it is under heavy load, it gets very loud (fan noise). Is there any way to easily limit my GPU's power usage? I know I can limit framerate in Crimson control panel or I can use V-sync but is there any other options? I would not like to change my PSU or GPU.