If i get the AMP! endition along with like a ASRock Extreme4 and a 3570K CPU, will 500w psu suffice?
The ZOTAC GeForce GTX 670 AMP! Edition draws 52 Watts more than the nVIDIA reference design card.
Zotac specifies a 600 Watt power supply for that specific card.
What is the make and model of your 500 Watt PSU?
If it has at least a combined +12 Volt continuous current rating of 33 Amps or greater
and with at least two 6-pin PCI Express supplementary power connectors
then it should be sufficient.