This is a very special card. It is the elusive ATI Radeon X850 XT AGP PRO card made for apple G5 systems. Apparently, you had to order this from apple and couldn't get it as a standard configuration. I pulled this card from a 2004 PowerMac G5 that was owned by apple corporate.
It has been tested and works well. Played nanosaur 2 for about an hour with easily 60FPS on best settings. This card really blasts.