System configuration Hardware Question

I do want to know what should be the proper system config, as my system reload and switching between modules in GUI is very slow.

Running newest download of freepbx, 13. Fromt website link

My system is a T105 dell server 512mb of RAM, and 80gig hard drive. I do not record incoming calls and I am a small real estate and construction company less than 5 people.

Upgrade your ram and you are good to go. Something around 2gbyte would be nice.