Which agp slot is there in this motherboard?

My motherboard is TYAN s2266 and it have an agp slot but i dont know which one 1x2x4x or 8x. In BIOS the maximum I can set it to is 2x and CPU-Z(a software that gives information about ur pc) also tells it 2x but TYAN s2266 originally have 4x AGP. please help me with it and if possible suggest a 512mb vga card for it too. IM GONNA PLAY LIGHT GAMES LIKE GTA SA GTA LCS NFS MOSTWANTED etc