Are you having any luck with the new Power supply?
Huk and ff2k - Unless there is some other weird common demonitor, I'm at a loss. I am quite convinced that my card is unable to detect
or handle 3D speeds - it's faulty. I tried a different PSU - 600W Sli X-Finity with the same result...
- Perhaps there is a problem with the OS, drivers or services (I did a completely new XP install on a clean drive, no ATITool, so I doubt this)
- Something with chipset or other hardware? Look at my system specs.
- In 3Dmark05, w/ my unlocked X800GTO I got 6300, with the X1900XTX I got 7400, the sad part is the X1900XTX graphics look better!!!
- Cat 6.9 overclocking optimizer would not let me go any higher than stock (with both PSU's)
- I suspect the card/driver/poller has a failsafe that pushes it back to 2D clocks when an error is detected (voltage, artifacts, heat... etc.)
Perhaps there is an issue with OEM heatsink installation, but I don't care at this point - I'm sending the card back

Quite simply, I give up. I feel I've tried everything.