I have a problem with my current 500w PSU.I hear a strange noise from it.I have searched all over the internet and i noticed that some guys have this problem even if they upgrade their 750 watt PSU to a 1000 watt PSU.Please tell me what PSU are you using to support this graphics card.Tell me the model that you are using.I want to upgrade my PSU but i am afraid that this problem will continue and i ll lose my money.In my country i cant RMA my product.Please guys help me.