If you have a VIVO x800 you can unlock the pipelines and flash it to an XT card easy as pie, otherwise you can try your luck at a bit of hard and soft modding and flashing.
No one can answer your video card dillema since we are dealing with a nonexistant card. I think most likely I'll end up with an x900 Pro VIVO in the next year or so and flash that baby to an XT PE.
As far as your overall system goes, you are fine for a good while. You are stuck on socket 754 so you might as well wait for socket M2/S1 and act from there.
No one can answer your video card dillema since we are dealing with a nonexistant card. I think most likely I'll end up with an x900 Pro VIVO in the next year or so and flash that baby to an XT PE.
As far as your overall system goes, you are fine for a good while. You are stuck on socket 754 so you might as well wait for socket M2/S1 and act from there.