I have a 7900gt 512mb with a Arctic Silencer on it. My clocks are in my sig and right now it idles at 38 degrees. I had the 1.4v voltmod on it, but I took it off because my idle temps went up to 45+ degrees. Is this normal? If it is, i'll put the v-mod back on. Also, the max core clock I can reach with the v-mod is about 650 before cool bits and rivatuner fail their test. Is this normal? Thanks!