What is the brand/model or specs of your 600W psu?
Is the video card new or used?
The videocard is Brand New
Power Supply specs :I dont understand much about this numbers but this is what I found on it
+5Vcc +12Vcc -12Vcc +3,3Vcc +5CSB
600W 60A 36A 0,8A 36A 2A