I have an IBM Aptiva E3U. It has an AMD K6-2 350 with 64 Meg of PC-100 memory, a 100MHz Front Side Bus, and ATI Rage Pro AGP 2X on the motherboard. It does not have an AGP slot, contrary to my initial belief (I really need to read the fine print more closely). This motherboard is one of those highly integrated ones where there's only one shared PCI/ISA slot and one ISA slot that comes with a V.90 Lucent LT WinModem in it.
It came with Windows 98. I downloaded DirectX 6 which has support for 3DNow built in. I downloaded ATI's latest Rage Pro beta drivers which now have support for a full OpenGL ICD and 3DNow as well. On top of all that I downloaded AMD's source-modified version of Quake II 3.19 which has a generic 3DNow OpenGL driver in it.
The mathematicly inclined among you will notice that 2 PCI cards don't fit well into the one slot I have available so I'm hoping that someone will make an ISA Vortex2 based board.