Istina....evo kaj sam nasel:
"I also have a XFX GTX260 Core Edition. It's the 216 shaders model with 55nm. I also noticed that it never throttles down and always stays at 3d clocks. No matter what drivers or what OS i used.
So i wrote a ticket on the xfx homepage and the guy that answered confirmed that this card does not support 2D throttling.
So I looked for another gtx260 bios and found one from zotac with the same device ID and board ID, flashed it onto my xfx card and guess what... The 2d clocks worked immediately."