Re: GTX 280 screeching...
Maybe something with the fan and you only notice it when it throttles up or do you have it set at a certain percentage all the time?
AMD FX-8320 Vishera 8-Core 3.5GHz (4.0GHz Turbo)
G.SKILL Ripjaws X Series 16GB (4x4GB)
EVGA SuperClocked GeForce GTX 760 2GB w/ EVGA ACX Cooler
MSI GTX 460 (Dedicated PhysX)