BarnKnee :
R_1 :
145W + 110W= 245W total usage just for both cards.
what model 500W power supply
It's a novatech Power Station 500 Watt ATX power supply
432 usable watts, 36A x 12V=432Watts
I would suggest a larger or higher quality unit 650W-750W.
it should work (providied the CPU is not a power hog too) but you will be pushing the power supply to the limits.
I have never heard of novatech