HP Motherboard - ATI or Nvidia Southbridge?

[darkspreader]

I have an HP desktop, model a850y. I need to see if it supports ATI or Nvidia cards. But I can't find ANYWHERE on which one it supports. Here's a link to HP's specs on it:

http://h10025.www1.hp.com/ewfrf/wc/genericDocument?lc=en&cc=us&locale=en_US&docname=c00196251&dlc=en&printable=yes&encodeUrl=true&#

So, could someone tell me what kind of gfx card it holds, ATI or Nvidia?
Thanks.

 

[bazza]

it uses 915G so its an onboard Intel Express GFX

ie... quite poor