是滴!毛毛大大猜對了,確實是電壓不夠的關係!

以下載自VR-Zone Hardware:
These 2ns memory chips requires 2.8V VDD and 2.8V VDDQ power supply. Through a voltmeter check, PowerColor has set to VDDQ corresponds to the reference Radeon 9800 Pro card which is 2.68V so it is actually supply lower VDDQ to the memory chips...