# NVIDIA GeForce 4?

**URL:** <https://psychtoolbox.discourse.group/t/nvidia-geforce-4/1482>\
**Category:** Uncategorized\
**Created:** [June 11, 2002, 8:59am UTC](https://psychtoolbox.discourse.group/t/nvidia-geforce-4/1482 "2002-06-11T08:59:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![denispelli](https://avatars.discourse-cdn.com/v4/letter/d/cdc98d/32.png) [@denispelli](https://psychtoolbox.discourse.group/u/denispelli)\
**Post date:** [June 11, 2002, 8:59am UTC](https://psychtoolbox.discourse.group/t/nvidia-geforce-4/1482/1 "2002-06-11T08:59:04Z")

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dear ben  
  
[http://www.cvs.rochester.edu/people/b\_singer/Radeon10BitGamma/](http://www.cvs.rochester.edu/people/b_singer/Radeon10BitGamma/)  
  
your web page says,  
  
"The GeForce4 has 10-bit DACs as well! I have contacted NVIDIA."  
  
as far as i can tell from the NVIDIA site, there are two different Mac cards:  
  
GeForce 4 MX  
GeForce 4 Ti  
  
I think the Ti is $400 and the MX $300 (not sure). both are now   
available, but i'm not sure whether they're retail or only from   
Apple's build to order.  
  
do you know which has 10-bit DACs. both?  
  
best  
  
denis

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**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\
**Post date:** [June 11, 2002, 7:24pm UTC](https://psychtoolbox.discourse.group/t/nvidia-geforce-4/1482/2 "2002-06-11T19:24:34Z")

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Dear Denis, Ben,  
  
We have a GeForce4 MX which I tested  
TimeVideo, ScreenTest and Ben's new  
TestGamma on. They all reported 8 bit  
DACs in 9.2.2 and in 10.1.3 classic mode.  
So they must not have incorporated 10 bit  
support in their drivers yet. At some point  
I will try 10.1.5 classic when I get a chance to  
download it.  
  
Both cards are Build to Order options only  
right now. Apple is supposed to begin selling  
the 4 Ti separately but I haven't seen it posted  
on their web site yet. The Ti is an extra $250.00  
as an BTO option. Take care,  
  
Doug Taylor  
  
P.S. to Ben. TestGamma did not restore the Gamma table  
properly when I chose the 0 option. It restored properly  
when I chose the 1 option. However the 1 option gives  
white and black bars on the Radeon 8500.  
Both option report success on the 8500.  
  
Denis Pelli wrote:  
  

> \> dear ben  
> \>  
> \> [http://www.cvs.rochester.edu/people/b\_singer/Radeon10BitGamma/](http://www.cvs.rochester.edu/people/b_singer/Radeon10BitGamma/)  
> \>  
> \> your web page says,  
> \>  
> \> "The GeForce4 has 10-bit DACs as well! I have contacted NVIDIA."  
> \>  
> \> as far as i can tell from the NVIDIA site, there are two different Mac cards:  
> \>  
> \> GeForce 4 MX  
> \> GeForce 4 Ti  
> \>  
> \> I think the Ti is $400 and the MX $300 (not sure). both are now  
> \> available, but i'm not sure whether they're retail or only from  
> \> Apple's build to order.  
> \>  
> \> do you know which has 10-bit DACs. both?  
> \>  
> \> best  
> \>  
> \> denis