The ATI under-clocking tool?

[hat]

I have a Sapphire Radeon 9000 Pro and downloaded the ATI tool in the hope of squeezing out those extra few 3D Marks out of my card. However, after installing the tool I cannot get it to “Find Max Core”. When I hit the tab it goes up a couple of Mhz and then just keeps going down. I left it run for a while one time and it under-clocked my card to around 50 Mhz leaving my display a right mess. My default settings are 275 Mhz for the core and 250 Mhz for the memory. I have checked this with the cards specifications and these figures are true. Am I doing something obviously wrong or is this tool just not working on my card? Any help would be much appreciated. H

PS: I have a very well ventilated case and even have a PCI exhaust under my graphics card

[nightelf84]

Try getting a similar card and test it again using ati tool. I'm thinking your card is unstable at stock speeds.

[wazzledoozle]

Yeah underclocking is teh shiznit. I LOVE PLAYING DOOM 3 AT 6 FPS!!!!!

[Gambit]

You cld try and just set clock and then just scan for artifacts, going up little at a time, let it heat up with the box spining and then scan ect...................????