Leadtek GTX 650Ti Boost 2GB OC producing weird noise

Is it normal for it to produce weird noises ? I stress it with MSI Kombustor. Triangles of death from the 3D test made my graphic card sounds really high pitch but the fan speed is still constant. When i test it with Furry and Testy Test, its dead silent. Btw, when i stress it with Wavy Plane, my power supply produces some kind of electric buzzing and shut down. Is it because of not supplying enough voltage to my graphic card ?
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More about leadtek gtx 650ti boost 2gb producing weird noise
  1. you are pushing the card too far. beware. you willl damage your hardware.
  2. But the card is all stock from the box. Shouldnt it be okay to stress it ?
  3. your psu wattage? must be sufficient
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