Update
Update on the x1900GT OEM.
It can be overclocked. I didn't know that the speed increases were very coarse. I needed to increase the speed by a bigger margian. ATI tools got to 573 core and 846 memory.
Stable at 567/846.
Looked at the BIOS in Rabit and it only has a single profile...
I have this one
I just bought this card.
It's a little strange. Specs out at 513 core 657 memory. Does not seem to have a 2d/3d clock mode, always runs at 513. Looking at the bios with Rabit it shows a 645 core speed for 3D.
Latest drivers 7.9 do not load the overdrive panel.
ATItool...