Please help.Wich driver to use with houdini 11 i have asus laptop with x1600/xp32
i have problem with fluids display and no region render.
tanx

Both the X1600 and Windows XP are considered legacy by ATI/AMD, so they only get periodic updates with no new features. The more current one is the Feb 2010 release, here:

http://support.amd.com/us/gpudownload/windows/Legacy/Pages/radeonaiw_xp.aspx?type=2.4.1&product=2.4.1.3.13&lang=English [support.amd.com]

Volumes work fine for me on an X1550 w/ Vista 32b using this driver. I haven't tried the render region on this card lately.

There is an updated production build available (11.0.505), you may want to try that version as well.

render region doesnt work when licence server is in standalone mode.How did you set up display options in effects and optimisation tab on mashine with ati x1550?