Headless centos linux pipeline pilot server, is a GPU required?

Hi!

We are considering installing PP Free on our research group linux server (64 bit centos 5), this being the most powerful machine around.

I have seen info on Graphics card requirements, and wonder if these apply to the server (ie. does the PP server use GPU for calculations if available?) or the client only.

Are there any other issues implicated in installing PP in a setup like ours (headless 64 bit centos server)?

Cheers

Hampus