thats not a high end graphics card... its midrange. 62C idle is very high for those cards, even on stock. think about getting a good heatsink for that, the stock ones are terrible! just wondering, what are your cpu temps? i rarely get over 50C on my 7800gt with an nvsilencer 5 rev3, those are discontinued now.. and the last time i checked, there were no overclocking programs for vista.