I recently purchased a Sapphire R9 290x Tri-X OC from Amazon and it's been running great. The only problem I am having is the noise it makes when playing any game that pushes it. The weird part is if I manually clock the fan speed at say 50%, I end up with this high pitched buzzing noise that I can hear slightly, but the moment I start running a game the noise is amplified, even though the fan speed hasn't changed . Any help identifying the problem would be greatly appreciated.