best GPU for my Mobo?

[shoeb_ua]

Im still using an Intel D945GTP motherboard running a Pentium D 830 but without a GPU.......what wud b the best GPU for my Mobo......please dont ask me to change the whole mobo cuz yes i know its very old but i need a GPU urgently....
TIA

 

[CountMike]

The cheapest PCIe one you can find.