Can you please mention the make and model of your PSU and it's age? To answer your question, you should be able to drop in the GPU mentioned above but the processor on it isn't exactly going to be able to take advantage of the GPU's processing power.
Provided your PSU is up to the mark, prior to dropping in that discrete GPU, do make sure you're on the latest BIOS version for your motherboard. Best parse a link to the GPU you're looking at since some versions need a PCIe power input.