I bought an HPE 590t with 24GB of memory and an AMD Radeon HD 6570 which has a standard and hi def outputs.
I'd like to have 3 screens on my desk (currently I have 2 active ones, and on inactive). I'd also like to have a hi def output to my TV since, when not working, I enjoy movies.
My tasks do not require a gaming video setup, but I would like a second card with 2 output ports.
1. Is it doable (I am into software not hardware)
2. Should I just get another Radeon card?
This depends on your power supply. Depending on the quality of the PSU, you may or may not be able to draw enough power for crossfire. You can check here for the power draw along with comparisions to other GPUs: http://www.anandtech.com/bench/GPU/88