What size power supply do I need?

[aprentic]

I have just built a new desktop with a zotac 650 ti graphics card. After being built the PC boots up but no signal is received to my tv/monitor. I have read previous threads that suggest the power supply is the problem. I was curious as to how big a power supply I needed. Right now I have a corsair cx750. All the fans run but they seem like they may be a little weak. I'm running a couple 200mm fans and a 140mm fan. I also have an AMD quad processor

Your help would be greatly appreciated.

 

[Cons29]

try using your gpu on another rig, 750w is more than enough

 

[N@m@n]

cx430 will be enough

 

[ASHISH65]

I answered you your previos thread.do not create extra thread

 

[aprentic]

Sorry this was my first time here. it was an accident

 

[aprentic]

Ok so i tried the gpu in another rig and everything worked perfectly fine. Is everyone sure that the power supply might not be at fault? i get no beep on start up