I'm looking for suggestions on a video card that will run with just the pci-x bus supplying the power. Something better than an ATI 3650 with 1gb of memory.
I have the Radeon 5570 and am mostly happy with it (but I don't play the most demanding games). I'm not sure if that's their most powerful that just runs off the power it gets from the slot.
In addition, both the 6570 and 6670 run off power from the slot. Below is a link to a review of the 6670: http://www.pcmag.com/article2/0,2817,2385800,00.asp
Thanks for the suggestions. I might go for the 6670 since it's available at a nearby shop. Not really gonna be playing heavy and graphics demanding games on the old desktop so this'll do fine.