So how specifically if you use this for overclock stability testing do you know if it fails? I'd imagine it may lockup the entire system if the card is to overclocked, however for slightly unstable overclocks I am used to using ATITools and staring for yellow dots. How do you tell here? ATITools seems pretty unstable in my Vista 64-bit system so went for this program since it works and raises my heat a bit. Just sure there are points in the overclock that things are unstable before I hit a level that the system locks and would like to know that thru Vista 64.