I just bought a budget card for a temp upgrade for my gaming the Asus GTX 750 Ti and i plugged everything in ok check all wires and i had a no signal on both my monitors. Now i double checked everything and even put my old card back in and it worked fine. My PSU is a 350W it has +12V 1 and 2 of 18Amps and the card requires 20A so i thought and was told it will be fine. But when i put my old card back in a got a system error on start up notification didn't say anything apart from that was very strange so i am now thinking is the watts not enough or something, hope to hear from someone that knows a bit more then me at the moment appreciate any help thanks.