I was attempting to see how far my asus gtx 670 can go. I figured since it was voltage locked i couldn't cause any harm. I got it stable at +175 on the core and 600 on the memory. I attempted to push it to 200 on the core. Unigene valley crashed to the desktop and then i set it back to the original stable OC and ran unigene valley again. It started making a buzzing noise and scored in the mid 1600s, before it scored in the mid 2000s. I score in the 1500s when its on stock settings and makes the noise.
Edit: Some times it makes a whistling sound when exiting programs to desktop.
Edit: Some times it makes a whistling sound when exiting programs to desktop.