Where is a good site to find out the temp of my GPU the asus thing that has the temps for mobo and cpu doesnt have one for my GPU..also can anyone explain what the difference between ambiant and my mobo temp?

What graphics card do you have? The manufacturers website is a good place to start!

ambiant temp is room temp. mobo temp is the temp around your mobo. Small difference. I suppose the main difference is that the mobo temp tells you the temp in your casing, which in my experience can be alot higher than room temp.

If your mobo temp is significantly higher than room temp, just open the case after a stress period (gaming or something), and stick your hand in there. If it feels warmer, its time to add more fans to the case.