Hi, I've got the limited edition X800 GTO2, but I have unlocked it to 16 pipelines. I've run the find max mem perfectly and it tops out at 621MHz, but when I run the find max gpu clock, after about 15 minutes when it gets to around ~530MHz, my computer just crashes, black screen and has to be reset. Although ATi Tool informs me that maybe it was clocked too high, I didn't think the automatic find max tests allowed this to happen? That artifacts were seen first and teh clock speed lowered? I'm currently running my card at 520/590 but would love to get it upto 540/590 so it's running @ X850 XT PE speeds. Can anyone help me with this ATi tool crashing problem? THanks in advance all!