Can't overclock Radeon 2900 Pro at all

[jasonspeed]

I just got the Sapphire Radeon 2900 Pro 1GB. I installed the card and had some problems with Catalyst 7.10 but got them installed. I see alot of people are overclocking the card using two 6 pin PCI-E connectors instead of the one 6 and one 8 pin power connector ATI suggests you use.

I tried installing ATI Tool, as its the software I prefer, but it kept freezing. It wouldn't read the core/mem clocks when first starting. I tried ATI Tray Tools but when I tried to OC the card I got a mem dump. I tried AMDGPUClockTool but when I try to clock the card it says Clock Settings Not Modified.

I using Windows Vista Home Premium. I have an Antec TruePower Trio 650w PSU. It's on ATI's approved PSU list. I'm at a loss why I can't clock this card. Any help or suggestions would be greatly appreciated. Thank you.

 

[jasonspeed]

Nvm. RivaTuner did the trick. It's odd ATI Tool didn't work with this card but as long as I got it clocked I'm happy. I got it up to 800 core/1000 mem.