Hello dear GPU-interested Julia members

Although I am still far away from being familiar enough with Julia, I am making plans to utilise a GPU for future number crunching. I want to underline: mining with graphic cards is **not my goal**, but **only** number crunching for mathematical calculations accelerated by a GPU in conjunction with Julia.

Such a PCI-Express graphic card with GPU should have which specifations as an absolute minimum for the mentioned number crunching?

What is your input for me regarding this?

Michael