whenever a x800gto card goes into 3d mode there is a high pitched noise coming form the video card pcb...in 3dmark in cpu tests, it also emmits a chirping sounds, almost like hdd, but higher...it makes noise synchronized with the framerate...the only time it stops is when i lower the core clock form default 400 to 300 or lower...what can that noise be coming from...the card is brand new, and works apart from the sound issue, without any problems...also i have tried a different motherboard and a different PSU