The Puget Systems Echo I is built upon the Zotac IONITX-F-E ATOM N330 Mini-ITX platform. It is housed within an Antec case and is slightly smaller in size than an Xbox 360. The base model comes with 2 GB of DDR2 memory, a slim line Sony DVD-RW Drive, Western Digital Scorpio 160GB 7200 RPM Hard Drive and Windows 7 Home Premium Edition. It is customizable when ordering with choices in OS, slim drive type, memory amount and hard drive size.