Upgrade no XPS 8900 - Placa de video

Good morning guys, I have an XPS 8900 for some time now. I work with architecture and renderings and my PC demands a lot. It is an i7 with 16G of ram and 2 tera of memory, with a video card AMD Radeon R9 370. I would like options of CARDS that are compatible with my PC, and I would like to know, if in case of changing the card for a more powerful, the only thing I need to change is also the source? or is there something else?