XF86_SVGA with ET4000/W32 and ET6000 cards 
The ET6000 driver code was developed on top of the existing ET4000/W32 code, because of the many similarities between both devices. As with the other W32 (external) clockchip/RAMDAC devices, the ET6000's built-in clockchip/RAMDAC provides a set of 8 standard clocks, which could be probed with the normal XFree clock probing procedure. In spite of that, XF86_W32 will always use the built-in programmable clockchip and RAMDAC. So there is no need for a
 ClockChip "et6000" 
 Ramdac "et6000" 
There is a known bug in this server when using it with ET6000 cards with 2.25 MB MDRAM: the server will detect 2.5 MB instead, and as a result, most accelerated operations won't work. On cards with 2.25 MB MDRAM, you must insert a
 VideoRam 2304 
XF86_SVGA with ET4000/W32 and ET6000 cards