# Radeon 7500 10 bit DAC support

**URL:** <https://psychtoolbox.discourse.group/t/radeon-7500-10-bit-dac-support/1316>\
**Category:** Uncategorized\
**Created:** [April 2, 2002, 9:41pm UTC](https://psychtoolbox.discourse.group/t/radeon-7500-10-bit-dac-support/1316 "2002-04-02T21:41:10Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![viztul](https://avatars.discourse-cdn.com/v4/letter/v/7993a0/32.png) [@viztul](https://psychtoolbox.discourse.group/u/viztul)\
**Post date:** [April 2, 2002, 9:41pm UTC](https://psychtoolbox.discourse.group/t/radeon-7500-10-bit-dac-support/1316/1 "2002-04-02T21:41:10Z")

</div>

I've updated 10-bit DAC support for the 7500 in my files and in David   
Brainard's beta script updates for 10-bit DAC support in   
Psychtoolbox. The files are at   
\<[http://www.cvs.rochester.edu/people/b\_singer/Radeon10BitGamma/](http://www.cvs.rochester.edu/people/b_singer/Radeon10BitGamma/)\>.  
  
The new G4's have as a base model one that includes the dual-head   
Radeon 7500, and we just got one here at CVS I can test on. For $1600   
you have a 800MHz G4 with 2 screens, one of which is analog VGA which   
supports 10-bit gamma tables in the drivers out of the box! Of course   
out of the box it runs MacOS X, and 10-bit support doesn't seem to be   
enabled via Classic mode, according to one report. I haven't tried it.  
  
Have fun!  
  
Ben