Overclocking my 6800gt

[lavaheadache]

Call it bragging or whatever but this card has been running at 421/1130 for 7 months now and not a hitch. Temps never get over 65c in the summer (acrtic cooling 5). In march when I kept the house in the 60's, Temps never made it to 60c. If I auto detect optimal it sets to around 437 but I will get artifacts after about 10 mins of play. Imagine the max stable would be just about 430 +or - a couple, but I dont feel the need to really push the envelope all the time. How do you peoples Gt's stack up