I have an NVIDIA GeForce GT 430 graphics card. I'm getting a temperature of 39-40.0°C in idle, is that ok? Whats the ideal temperature for that card on idle?
by reading the specs of your graphic card you can see that the (safe) maximum temperature is something near 98°C. everything below is ok. the temperature of your graphic card should be room temperature (20°C) if you have turned your machine off. so, 45°C are just additional 20°C ontop of the "bottom" line, which is absolutely fine. my (passivly cooled) gt430 idles around 50-55°C, gaming pushes that up to 80-90°C.