We highly recommend a processor of at least 500mhz even though DirectAdmin will run on slower systems. A minimum 512 megabytes of memory is required (2+ Gig is preferred). A hard drive with at least 2 gigabytes of free space (after the Linux install) is also required. If you are expecting high traffic levels then you will need more memory, processor power, and hard drive space than we recommend here. Intel and AMD should work fine. Solaris/Sparc will not