Graphic card for pci-e x8 gen2

[MarioPiel]

Hi,
I need good quality graphic card for 3d (ACad, 3DMax,...) for my Dell T610, Win 7 Proff. x64, which has no PCI-E x16 (only PCI-E x8 Gen.2).
Quadro Plex is too expensive !
Any suggestions ?!

MarioPiel

 

[Rustyy117]

Budget?