I have the MSI R7950-2PMD3GD5 Radeon HD 7950. I got this yesterday. My problem is, when I ran furmark, 10 second tests instantly jumped from 45c idle to 80,90, and then 100c. I thought "it's furmark, it's crazy". Now I've tried Far Cry 3, and it boosts fan speed to 100% and Temps to 100c on the menu. Is this a defective GPU?